var eco_info = [['','','',0],['A00','Polish (Sokolsky) opening','',1],['A00','Polish','Tuebingen variation',2],['A00','Polish','Outflank variation',3],['A00','Benko\'s opening','',4],['A00','Lasker simul special','',5],['A00','Benko\'s opening','reversed Alekhine',7],['A00','Grob\'s attack','',8],['A00','Grob','spike attack',12],['A00','Grob','Fritz gambit',14],['A00','Grob','Romford counter-gambit',15],['A00','Clemenz (Mead\'s, Basman\'s or de Klerk\'s) opening','',16],['A00','Global opening','',18],['A00','Amar (Paris) opening','',19],['A00','Amar gambit','',26],['A00','Dunst (Sleipner, Heinrichsen) opening','',27],['A00','Dunst (Sleipner,Heinrichsen) opening','',28],['A00','Battambang opening','',29],['A00','Novosibirsk opening','',35],['A00','Anderssen\'s opening','',36],['A00','Ware (Meadow Hay) opening','',37],['A00','Crab opening','',39],['A00','Saragossa opening','',40],['A00','Mieses opening','',41],['A00','Mieses opening','',42],['A00','Valencia opening','',43],['A00','Venezolana opening','',47],['A00','Van\'t Kruijs opening','',48],['A00','Amsterdam attack','',55],['A00','Gedult\'s opening','',56],['A00','Hammerschlag (Fried fox/Pork chop opening)','',58],['A00','Anti-Borg (Desprez) opening','',59],['A00','Durkin\'s attack','',60],['A01','Nimzovich-Larsen attack','',61],['A01','Nimzovich-Larsen attack','modern variation',62],['A01','Nimzovich-Larsen attack','Indian variation',63],['A01','Nimzovich-Larsen attack','classical variation',64],['A01','Nimzovich-Larsen attack','English variation',65],['A01','Nimzovich-Larsen attack','Dutch variation',66],['A01','Nimzovich-Larsen attack','Polish variation',67],['A01','Nimzovich-Larsen attack','symmetrical variation',68],['A02','Bird\'s opening','',69],['A02','Bird','From gambit',70],['A02','Bird','From gambit, Lasker variation',76],['A02','Bird','From gambit, Lipke variation',78],['A02','Bird\'s opening, Swiss gambit','',84],['A02','Bird','Hobbs gambit',85],['A03','Bird\'s opening','',86],['A03','Mujannah opening','',87],['A03','Bird\'s opening','Williams gambit',88],['A03','Bird\'s opening','Lasker variation',92],['A04','Reti opening','',93],['A04','Reti v Dutch','',94],['A04','Reti','Pirc-Lisitsin gambit',95],['A04','Reti','Lisitsin gambit deferred',98],['A04','Reti opening','',99],['A04','Reti','Wade defence',101],['A04','Reti','Herrstroem gambit',102],['A05','Reti opening','',103],['A05','Reti','King\'s Indian attack, Spassky\'s variation',105],['A05','Reti','King\'s Indian attack',106],['A05','Reti','King\'s Indian attack, Reti-Smyslov variation',107],['A06','Reti opening','',108],['A06','Reti','old Indian attack',109],['A06','Santasiere\'s folly','',110],['A06','Tennison (Lemberg, Zukertort) gambit','',111],['A06','Reti','Nimzovich-Larsen attack',112],['A07','Reti','King\'s Indian attack (Barcza system)',113],['A07','Reti','King\'s Indian attack, Yugoslav variation',118],['A07','Reti','King\'s Indian attack, Keres variation',121],['A07','Reti','King\'s Indian attack',122],['A07','Reti','King\'s Indian attack, Pachman system',128],['A07','Reti','King\'s Indian attack (with ...c5)',129],['A08','Reti','King\'s Indian attack',130],['A08','Reti','King\'s Indian attack, French variation',140],['A09','Reti opening','',141],['A09','Reti','advance variation',142],['A09','Reti accepted','',143],['A09','Reti accepted','Keres variation',145],['A10','English opening','',146],['A10','English opening','',147],['A10','English','Adorjan defence',149],['A10','English','Jaenisch gambit',150],['A10','English','Anglo-Dutch defense',151],['A11','English','Caro-Kann defensive system',152],['A12','English','Caro-Kann defensive system',155],['A12','English','Torre defensive system',158],['A12','English','London defensive system',159],['A12','English','Caro-Kann defensive system',160],['A12','English','Bled variation',161],['A12','English','New York (London) defensive system',162],['A12','English','Capablanca\'s variation',163],['A12','English','Caro-Kann defensive system, Bogolyubov variation',164],['A13','English opening','',165],['A13','English','Romanishin gambit',171],['A13','English opening','Agincourt variation',172],['A13','English','Wimpey system',177],['A13','English opening','Agincourt variation',178],['A13','English','Kurajica defence',179],['A13','English','Neo-Catalan',180],['A13','English','Neo-Catalan accepted',182],['A14','English','Neo-Catalan declined',184],['A14','English','Symmetrical, Keres defence',189],['A15','English, 1...Nf6 (Anglo-Indian defense)','',190],['A15','English orang-utan','',191],['A15','English opening','',192],['A16','English opening','',193],['A16','English','Anglo-Gruenfeld defense',194],['A16','English','Anglo-Gruenfeld, Smyslov defense',200],['A16','English','Anglo-Gruenfeld, Czech defense',201],['A16','English','Anglo-Gruenfeld defense',202],['A16','English','Anglo-Gruenfeld defense, Korchnoi variation',207],['A17','English opening','',208],['A17','English','Queens Indian formation',210],['A17','English','Queens Indian, Romanishin variation',213],['A17','English','Nimzo-English opening',214],['A18','English','Mikenas-Carls variation',215],['A18','English','Mikenas-Carls, Flohr variation',217],['A18','English','Mikenas-Carls, Kevitz variation',218],['A19','English','Mikenas-Carls, Sicilian variation',219],['A20','English opening','',220],['A20','English, Nimzovich variation','',221],['A20','English, Nimzovich, Flohr variation','',222],['A21','English opening','',223],['A21','English, Troeger defence','',228],['A21','English, Keres variation','',229],['A21','English opening','',230],['A21','English, Smyslov defence','',231],['A21','English, Kramnik-Shirov counterattack','',232],['A22','English opening','',233],['A22','English','Bellon gambit',237],['A22','English','Carls\' Bremen system',238],['A22','English','Bremen, reverse dragon',239],['A22','English','Bremen, Smyslov system',240],['A23','English','Bremen system, Keres variation',241],['A24','English','Bremen system with ...g6',242],['A25','English','Sicilian reversed',243],['A25','English','closed system',247],['A25','English','closed, Taimanov variation',251],['A25','English','closed, Hort variation',252],['A25','English','closed, 5.Rb1',253],['A25','English','closed, 5.Rb1 Taimanov variation',254],['A25','English','closed system (without ...d6)',255],['A26','English','closed system',256],['A26','English','Botvinnik system',257],['A27','English','three knights system',258],['A28','English','four knights system',259],['A28','English','Nenarokov variation',269],['A28','English','Bradley Beach variation',270],['A28','English','four knights, Nimzovich variation',271],['A28','English','four knights, Marini variation',272],['A28','English','four knights, Capablanca variation',273],['A28','English','four knights, 4.e3',274],['A28','English','four knights, Stean variation',280],['A28','English','four knights, Romanishin variation',281],['A29','English','four knights, kingside fianchetto',282],['A30','English','symmetrical variation',283],['A30','English','symmetrical, hedgehog system',293],['A30','English','symmetrical, hedgehog, flexible formation',301],['A31','English','symmetrical, Benoni formation',302],['A32','English','symmetrical variation',305],['A33','English','symmetrical variation',307],['A33','English','symmetrical, Geller variation',309],['A34','English','symmetrical variation',310],['A34','English','symmetrical, three knights system',315],['A34','English','symmetrical variation',316],['A34','English','symmetrical, Rubinstein system',321],['A35','English','symmetrical variation',322],['A35','English','symmetrical, four knights system',324],['A36','English','symmetrical variation',325],['A36','English','ultra-symmetrical variation',328],['A36','English','symmetrical, Botvinnik system reversed',330],['A36','English','symmetrical, Botvinnik system',331],['A37','English','symmetrical variation',332],['A37','English','symmetrical, Botvinnik system reversed',333],['A38','English','symmetrical variation',334],['A38','English','symmetrical, main line with d3',337],['A38','English','symmetrical, main line with b3',338],['A39','English','symmetrical, main line with d4',339],['A40','Queen\'s pawn','',340],['A40','Queen\'s pawn','Lundin (Kevitz-Mikenas) defence',341],['A40','Queen\'s pawn','Charlick (Englund) gambit',342],['A40','Queen\'s pawn','Englund gambit',350],['A40','Queen\'s pawn','English defence',351],['A40','Polish defence','',352],['A40','Queen\'s pawn','',353],['A40','Queen\'s pawn','Keres defence',355],['A40','Queen\'s pawn','Franco-Indian (Keres) defence',356],['A40','Modern defence','',357],['A40','Beefeater defence','',365],['A41','Queen\'s Pawn','',366],['A41','Old Indian','Tartakower (Wade) variation',368],['A41','Old Indian defence','',369],['A41','Modern defence','',372],['A42','Modern defence','Averbakh system',373],['A42','Pterodactyl defence','',376],['A42','Modern defence','Averbakh system, Randspringer variation',377],['A42','Modern defence','Averbakh system, Kotov variation',378],['A43','Old Benoni defence','',379],['A43','Old Benoni','Franco-Benoni defence',382],['A43','Old Benoni','Mujannah formation',383],['A43','Old Benoni defence','',384],['A43','Woozle defence','',386],['A43','Old Benoni defence','',387],['A43','Hawk (Habichd) defence','',388],['A43','Old Benoni defence','',389],['A43','Old Benoni','Schmid\'s system',391],['A44','Old Benoni defence','',392],['A44','Semi-Benoni (`blockade variation\')','',394],['A45','Queen\'s pawn game','',395],['A45','Queen\'s pawn','Bronstein gambit',396],['A45','Canard opening','',397],['A45','Paleface attack','',398],['A45','Blackmar-Diemer gambit','',400],['A45','Gedult attack','',401],['A45','Trompovsky attack (Ruth, Opovcensky opening)','',402],['A46','Queen\'s pawn game','',403],['A46','Queen\'s pawn','Torre attack',405],['A46','Queen\'s pawn','Torre attack, Wagner gambit',407],['A46','Queen\'s pawn','Yusupov-Rubinstein system',408],['A46','Doery defence','',409],['A47','Queen\'s Indian defence','',410],['A47','Queen\'s Indian','Marienbad system',414],['A47','Queen\'s Indian','Marienbad system, Berg variation',417],['A48','King\'s Indian','East Indian defence',418],['A48','King\'s Indian','Torre attack',419],['A48','King\'s Indian','London system',420],['A49','King\'s Indian','fianchetto without c4',421],['A50','Queen\'s pawn game','',422],['A50','Kevitz-Trajkovich defence','',423],['A50','Queen\'s Indian accelerated','',424],['A51','Budapest defence declined','',425],['A51','Budapest','Fajarowicz variation',427],['A51','Budapest','Fajarowicz, Steiner variation',428],['A52','Budapest defence','',429],['A52','Budapest','Adler variation',430],['A52','Budapest','Rubinstein variation',431],['A52','Budapest','Alekhine variation',432],['A52','Budapest','Alekhine, Abonyi variation',435],['A52','Budapest','Alekhine variation, Balogh gambit',436],['A53','Old Indian defence','',437],['A53','Old Indian','Janowski variation',439],['A54','Old Indian','Ukrainian variation',440],['A54','Old Indian','Dus-Khotimirsky variation',443],['A54','Old Indian','Ukrainian variation, 4.Nf3',444],['A55','Old Indian','main line',446],['A56','Benoni defence','',447],['A56','Benoni defence, Hromodka system','',449],['A56','Vulture defence','',450],['A56','Czech Benoni defence','',451],['A56','Czech Benoni','King\'s Indian system',455],['A57','Benko gambit','',456],['A57','Benko gambit half accepted','',458],['A57','Benko gambit','Zaitsev system',459],['A57','Benko gambit','Nescafe Frappe attack',465],['A58','Benko gambit accepted','',466],['A58','Benko gambit','Nd2 variation',472],['A58','Benko gambit','fianchetto variation',473],['A59','Benko gambit','7.e4',474],['A59','Benko gambit','Ne2 variation',478],['A59','Benko gambit','',479],['A59','Benko gambit','main line',483],['A60','Benoni defence','',484],['A61','Benoni defence','',490],['A61','Benoni','Uhlmann variation',491],['A61','Benoni','Nimzovich (knight\'s tour) variation',492],['A61','Benoni','fianchetto variation',493],['A62','Benoni','fianchetto variation',496],['A63','Benoni','fianchetto, 9...Nbd7',498],['A64','Benoni','fianchetto, 11...Re8',502],['A65','Benoni','6.e4',503],['A66','Benoni','pawn storm variation',505],['A66','Benoni','Mikenas variation',507],['A67','Benoni','Taimanov variation',508],['A68','Benoni','four pawns attack',510],['A69','Benoni','four pawns attack, main line',512],['A70','Benoni','classical with e4 and Nf3',513],['A70','Benoni','classical without 9.O-O',515],['A71','Benoni','classical, 8.Bg5',516],['A72','Benoni','classical without 9.O-O',517],['A73','Benoni','classical, 9.O-O',518],['A74','Benoni','classical, 9...a6, 10.a4',520],['A75','Benoni','classical with ...a6 and 10...Bg4',521],['A76','Benoni','classical, 9...Re8',522],['A77','Benoni','classical, 9...Re8, 10.Nd2',523],['A78','Benoni','classical with ...Re8 and ...Na6',524],['A79','Benoni','classical, 11.f3',525],['A80','Dutch','',526],['A80','Dutch, Spielmann gambit','',529],['A80','Dutch, Manhattan (Alapin, Ulvestad) variation','',530],['A80','Dutch, Von Pretzel gambit','',532],['A80','Dutch, Korchnoi attack','',533],['A80','Dutch, Krejcik gambit','',534],['A80','Dutch, 2.Bg5 variation','',535],['A81','Dutch defence','',536],['A81','Dutch defence, Blackburne variation','',540],['A81','Dutch defence','',541],['A81','Dutch','Leningrad, Basman system',548],['A81','Dutch','Leningrad, Karlsbad variation',549],['A82','Dutch','Staunton gambit',550],['A82','Dutch','Balogh defence',551],['A82','Dutch','Staunton gambit',552],['A82','Dutch','Staunton gambit, Tartakower variation',555],['A83','Dutch','Staunton gambit, Staunton\'s line',556],['A83','Dutch','Staunton gambit, Alekhine variation',558],['A83','Dutch','Staunton gambit, Lasker variation',559],['A83','Dutch','Staunton gambit, Chigorin variation',560],['A83','Dutch','Staunton gambit, Nimzovich variation',561],['A84','Dutch defence','',562],['A84','Dutch defence','Bladel variation',565],['A84','Dutch defence','',566],['A84','Dutch defence, Rubinstein variation','',567],['A84','Dutch','Staunton gambit deferred',568],['A84','Dutch defence','',569],['A85','Dutch with c4 & Nc3','',570],['A86','Dutch with c4 & g3','',571],['A86','Dutch','Hort-Antoshin system',576],['A86','Dutch','Leningrad variation',577],['A87','Dutch','Leningrad, main variation',580],['A88','Dutch','Leningrad, main variation with c6',585],['A89','Dutch','Leningrad, main variation with Nc6',586],['A90','Dutch defence','',588],['A90','Dutch defence','Dutch-Indian (Nimzo-Dutch) variation',589],['A90','Dutch-Indian, Alekhine variation','',591],['A91','Dutch defence','',592],['A92','Dutch defence','',594],['A92','Dutch defence, Alekhine variation','',596],['A92','Dutch','stonewall variation',597],['A92','Dutch','stonewall with Nc3',598],['A93','Dutch','stonewall, Botwinnik variation',599],['A94','Dutch','stonewall with Ba3',601],['A95','Dutch','stonewall with Nc3',602],['A95','Dutch','stonewall: Chekhover variation',605],['A96','Dutch','classical variation',606],['A97','Dutch','Ilyin-Genevsky variation',608],['A97','Dutch','Ilyin-Genevsky, Winter variation',609],['A98','Dutch','Ilyin-Genevsky variation with Qc2',610],['A99','Dutch','Ilyin-Genevsky variation with b3',611],['B00','King\'s pawn opening','',612],['B00','Hippopotamus defence','',617],['B00','Corn stalk defence','',618],['B00','Lemming defence','',619],['B00','Fred','',620],['B00','Barnes defence','',621],['B00','Fried fox defence','',623],['B00','Carr\'s defence','',624],['B00','Reversed Grob (Borg/Basman defence/macho Grob)','',625],['B00','St. George (Baker) defence','',626],['B00','Owen defence','',627],['B00','Guatemala defence','',629],['B00','KP','Nimzovich defence',630],['B00','KP','Nimzovich defence, Wheeler gambit',635],['B00','KP','Nimzovich defence',636],['B00','KP','Colorado counter',637],['B00','KP','Nimzovich defence',638],['B00','KP','Nimzovich defence, Marshall gambit',642],['B00','KP','Nimzovich defence, Bogolyubov variation',643],['B00','KP','Neo-Mongoloid defence',644],['B01','Scandinavian (centre counter) defence','',645],['B01','Scandinavian defence, Lasker variation','',654],['B01','Scandinavian defence','',655],['B01','Scandinavian defence, Gruenfeld variation','',658],['B01','Scandinavian','Anderssen counter-attack',659],['B01','Scandinavian','Anderssen counter-attack orthodox attack',664],['B01','Scandinavian','Anderssen counter-attack, Goteborg system',665],['B01','Scandinavian','Anderssen counter-attack, Collijn variation',666],['B01','Scandinavian, Mieses-Kotrvc gambit','',667],['B01','Scandinavian','Pytel-Wade variation',668],['B01','Scandinavian defence','',669],['B01','Scandinavian','Icelandic gambit',671],['B01','Scandinavian gambit','',672],['B01','Scandinavian defence','',673],['B01','Scandinavian','Marshall variation',674],['B01','Scandinavian','Kiel variation',676],['B01','Scandinavian','Richter variation',677],['B02','Alekhine\'s defence','',678],['B02','Alekhine\'s defence','Scandinavian variation',680],['B02','Alekhine\'s defence','Spielmann variation',683],['B02','Alekhine\'s defence','Maroczy variation',684],['B02','Alekhine\'s defence','Krejcik variation',685],['B02','Alekhine\'s defence','Mokele Mbembe (Buecker) variation',687],['B02','Alekhine\'s defence','Brooklyn defence',688],['B02','Alekhine\'s defence','',689],['B02','Alekhine\'s defence','Kmoch variation',694],['B02','Alekhine\'s defence','Saemisch attack',695],['B02','Alekhine\'s defence','Welling variation',696],['B02','Alekhine\'s defence','',697],['B02','Alekhine\'s defence','Steiner variation',699],['B02','Alekhine\'s defence','two pawns\' (Lasker\'s) attack',700],['B02','Alekhine\'s defence','two pawns\' attack, Mikenas variation',705],['B03','Alekhine\'s defence','',706],['B03','Alekhine\'s defence','O\'Sullivan gambit',707],['B03','Alekhine\'s defence','',708],['B03','Alekhine\'s defence','Balogh variation',709],['B03','Alekhine\'s defence','',710],['B03','Alekhine\'s defence','exchange variation',712],['B03','Alekhine\'s defence','exchange, Karpov variation',724],['B03','Alekhine\'s defence','four pawns attack',725],['B03','Alekhine\'s defence','four pawns attack, Korchnoi variation',736],['B03','Alekhine\'s defence','four pawns attack, 6...Nc6',737],['B03','Alekhine\'s defence','four pawns attack, Ilyin-Genevsky var.',742],['B03','Alekhine\'s defence','four pawns attack, 7.Be3',743],['B03','Alekhine\'s defence','four pawns attack, Tartakower variation',752],['B03','Alekhine\'s defence','four pawns attack, Planinc variation',753],['B03','Alekhine\'s defence','four pawns attack, fianchetto variation',754],['B03','Alekhine\'s defence','four pawns attack, Trifunovic variation',755],['B04','Alekhine\'s defence','modern variation',756],['B04','Alekhine\'s defence','modern, Larsen variation',757],['B04','Alekhine\'s defence','modern, Schmid variation',758],['B04','Alekhine\'s defence','modern, fianchetto variation',759],['B04','Alekhine\'s defence','modern, Keres variation',764],['B05','Alekhine\'s defence','modern variation, 4...Bg4',765],['B05','Alekhine\'s defence','modern, Flohr variation',767],['B05','Alekhine\'s defence','modern, Panov variation',768],['B05','Alekhine\'s defence','modern, Alekhine variation',769],['B05','Alekhine\'s defence','modern, Vitolins attack',771],['B06','Robatsch (modern) defence','',772],['B06','Norwegian defence','',778],['B06','Robatsch (modern) defence','',779],['B06','Robatsch defence','three pawns attack',780],['B06','Robatsch defence','',781],['B06','Robatsch defence','Gurgenidze variation',786],['B06','Robatsch (modern) defence','',787],['B06','Robatsch defence','two knights variation',788],['B06','Robatsch defence','two knights, Suttles variation',789],['B06','Robatsch defence','Pseudo-Austrian attack',790],['A41','Robatsch defence','Rossolimo variation',794],['B07','Pirc defence','',798],['B07','Pirc','Ufimtsev-Pytel variation',799],['B07','Pirc defence','',800],['B07','Pirc','150 attack',803],['B07','Pirc','Sveshnikov system',804],['B07','Pirc','Holmov system',805],['B07','Pirc','Byrne variation',806],['B07','Pirc defence','',807],['B07','Pirc','Chinese variation',809],['B07','Pirc','bayonet (Mariotti) attack',810],['B07','Robatsch defence','Geller\'s system',811],['B08','Pirc','classical (two knights) system',812],['B08','Pirc','classical (two knights) system',813],['B08','Pirc','classical, h3 system',814],['B08','Pirc','classical system, 5.Be2',815],['B09','Pirc','Austrian attack',816],['B09','Pirc','Austrian attack',819],['B09','Pirc','Austrian attack, 6.e5',820],['B09','Pirc','Austrian attack, 6.Be3',821],['B09','Pirc','Austrian attack, 6.Bd3',822],['B09','Pirc','Austrian attack, dragon formation',823],['B09','Pirc','Austrian attack, Ljubojevic variation',824],['B10','Caro-Kann defence','',825],['B10','Caro-Kann','Hillbilly attack',826],['B10','Caro-Kann','anti-Caro-Kann defence',827],['B10','Caro-Kann','anti-anti-Caro-Kann defence',828],['B10','Caro-Kann','closed (Breyer) variation',829],['B10','Caro-Kann defence','',830],['B10','Caro-Kann','Goldman (Spielmann) variation',832],['B10','Caro-Kann','two knights variation',833],['B11','Caro-Kann','two knights, 3...Bg4',834],['B12','Caro-Kann defence','',835],['B12','de Bruycker defence','',838],['B12','Caro-Masi defence','',839],['B12','Caro-Kann defence','',840],['B12','Caro-Kann','Tartakower (fantasy) variation',841],['B12','Caro-Kann','3.Nd2',842],['B12','Caro-Kann','Edinburgh variation',843],['B12','Caro-Kann','advance variation',844],['B12','Caro-Kann','advance, Short variation',848],['B13','Caro-Kann','exchange variation',849],['B13','Caro-Kann','exchange, Rubinstein variation',855],['B13','Caro-Kann','Panov-Botvinnik attack',856],['B13','Caro-Kann','Panov-Botvinnik, Gunderam attack',858],['B13','Caro-Kann','Panov-Botvinnik attack',859],['B13','Caro-Kann','Panov-Botvinnik, Herzog defence',864],['B13','Caro-Kann','Panov-Botvinnik, normal variation',865],['B13','Caro-Kann','Panov-Botvinnik, Czerniak variation',866],['B13','Caro-Kann','Panov-Botvinnik, Reifir (Spielmann) variation',867],['B14','Caro-Kann','Panov-Botvinnik attack, 5...e6',868],['B14','Caro-Kann','Panov-Botvinnik attack, 5...g6',869],['B15','Caro-Kann defence','',870],['B15','Caro-Kann','Gurgenidze counter-attack',871],['B15','Caro-Kann','Gurgenidze system',872],['B15','Caro-Kann','Rasa-Studier gambit',874],['B15','Caro-Kann defence','',875],['B15','Caro-Kann','Alekhine gambit',877],['B15','Caro-Kann','Tartakower (Nimzovich) variation',879],['B15','Caro-Kann','Forgacs variation',880],['B16','Caro-Kann','Bronstein-Larsen variation',881],['B17','Caro-Kann','Steinitz variation',882],['B18','Caro-Kann','classical variation',883],['B18','Caro-Kann','classical, Flohr variation',886],['B18','Caro-Kann','classical, Maroczy attack',887],['B18','Caro-Kann','classical, 6.h4',888],['B19','Caro-Kann','classical, 7...Nd7',891],['B19','Caro-Kann','classical, Spassky variation',892],['B20','Sicilian defence','',893],['B20','Sicilian','Gloria variation',899],['B20','Sicilian','Steinitz variation',900],['B20','Sicilian','wing gambit',901],['B20','Sicilian','wing gambit, Santasiere variation',903],['B20','Sicilian','wing gambit, Marshall variation',904],['B20','Sicilian','wing gambit, Marienbad variation',908],['B20','Sicilian','wing gambit, Carlsbad variation',909],['B20','Sicilian','Keres variation (2.Ne2)',910],['B21','Sicilian','Grand Prix attack',911],['B21','Sicilian','Smith-Morra gambit',912],['B21','Sicilian','Andreaschek gambit',916],['B21','Sicilian','Smith-Morra gambit',917],['B21','Sicilian','Smith-Morra gambit, Chicago defence',930],['B22','Sicilian','Alapin\'s variation (2.c3)',931],['B22','Sicilian','2.c3, Heidenfeld variation',937],['B23','Sicilian','closed',938],['B23','Sicilian','closed, Korchnoi variation',941],['B23','Sicilian','closed, 2...Nc6',942],['B23','Sicilian','chameleon variation',943],['B23','Sicilian','Grand Prix attack',944],['B23','Sicilian','Grand Prix attack, Schofman variation',950],['B24','Sicilian','closed',951],['B24','Sicilian','closed, Smyslov variation',959],['B25','Sicilian','closed',960],['B25','Sicilian','closed, 6.Ne2 e5 (Botvinnik)',962],['B25','Sicilian','closed, 6.f4',963],['B25','Sicilian','closed, 6.f4 e5 (Botvinnik)',964],['B26','Sicilian','closed, 6.Be3',965],['B27','Sicilian defence','',966],['B27','Sicilian','Stiletto (Althouse) variation',967],['B27','Sicilian','Quinteros variation',968],['B27','Sicilian','Katalimov variation',969],['B27','Sicilian','Hungarian variation',970],['B27','Sicilian','Acton extension',972],['B28','Sicilian','O\'Kelly variation',973],['B29','Sicilian','Nimzovich-Rubinstein variation',974],['B29','Sicilian','Nimzovich-Rubinstein; Rubinstein counter-gambit',982],['B30','Sicilian defence','',983],['B30','Sicilian','Nimzovich-Rossolimo attack (without ...d6)',984],['B31','Sicilian','Nimzovich-Rossolimo attack (with ...g6, without ...d6)',985],['B31','Sicilian','Nimzovich-Rossolimo attack, Gurgenidze variation',990],['B32','Sicilian defence','',991],['B32','Sicilian','Flohr variation',994],['B32','Sicilian','Nimzovich variation',995],['B32','Sicilian','Labourdonnais-Loewenthal variation',996],['B32','Sicilian','Labourdonnais-Loewenthal (Kalashnikov) variation',998],['B33','Sicilian defence','',999],['B33','Sicilian','Pelikan (Lasker/Sveshnikov) variation',1001],['B33','Sicilian','Pelikan, Bird variation',1007],['B33','Sicilian','Pelikan, Chelyabinsk variation',1008],['B33','Sicilian','Sveshnikov variation',1012],['B34','Sicilian','accelerated fianchetto, exchange variation',1014],['B34','Sicilian','accelerated fianchetto, modern variation',1015],['B35','Sicilian','accelerated fianchetto, modern variation with Bc4',1019],['B36','Sicilian','accelerated fianchetto, Maroczy bind',1020],['B36','Sicilian','accelerated fianchetto, Gurgenidze variation',1025],['B37','Sicilian','accelerated fianchetto, Maroczy bind, 5...Bg7',1026],['B37','Sicilian','accelerated fianchetto, Simagin variation',1030],['B38','Sicilian','accelerated fianchetto, Maroczy bind, 6.Be3',1031],['B39','Sicilian','accelerated fianchetto, Breyer variation',1034],['B40','Sicilian defence','',1035],['B40','Sicilian','Marshall variation',1037],['B40','Sicilian defence','',1038],['B40','Sicilian','Anderssen variation',1040],['B40','Sicilian','Pin variation (Sicilian counter-attack)',1042],['B40','Sicilian','Pin, Jaffe variation',1044],['B40','Sicilian','Pin, Koch variation',1045],['B41','Sicilian','Kan variation',1046],['B41','Sicilian','Kan, Maroczy bind (Reti variation)',1047],['B41','Sicilian','Kan, Maroczy bind - Bronstein variation',1053],['B42','Sicilian','Kan, 5.Bd3',1054],['B42','Sicilian','Kan, Gipslis variation',1059],['B42','Sicilian','Kan, Polugaievsky variation',1060],['B42','Sicilian','Kan, Swiss cheese variation',1061],['B43','Sicilian','Kan, 5.Nc3',1062],['B44','Sicilian defence','',1063],['B44','Sicilian, Szen (`anti-Taimanov\') variation','',1064],['B44','Sicilian, Szen, hedgehog variation','',1075],['B44','Sicilian, Szen variation, Dely-Kasparov gambit','',1076],['B45','Sicilian','Taimanov variation',1077],['B45','Sicilian','Taimanov, American attack',1081],['B46','Sicilian','Taimanov variation',1082],['B47','Sicilian','Taimanov (Bastrikov) variation',1083],['B48','Sicilian','Taimanov variation',1084],['B49','Sicilian','Taimanov variation',1086],['B50','Sicilian','',1087],['B50','Sicilian','wing gambit deferred',1088],['B51','Sicilian','Canal-Sokolsky (Nimzovich-Rossolimo, Moscow) attack',1089],['B52','Sicilian','Canal-Sokolsky attack, 3...Bd7',1090],['B52','Sicilian','Canal-Sokolsky attack, Bronstein gambit',1097],['B52','Sicilian','Canal-Sokolsky attack, Sokolsky variation',1098],['B53','Sicilian, Chekhover variation','',1101],['B53','Sicilian','Chekhover, Zaitsev variation',1104],['B54','Sicilian','',1105],['B54','Sicilian','Prins (Moscow) variation',1107],['B55','Sicilian','Prins variation, Venice attack',1109],['B56','Sicilian','',1110],['B56','Sicilian','Venice attack',1112],['B56','Sicilian','',1113],['B57','Sicilian','Sozin, not Scheveningen',1114],['B57','Sicilian','Magnus Smith trap',1118],['B57','Sicilian','Sozin, Benko variation',1119],['B58','Sicilian','classical',1121],['B58','Sicilian','Boleslavsky variation',1122],['B58','Sicilian','Boleslavsky, Louma variation',1123],['B59','Sicilian','Boleslavsky variation, 7.Nb3',1124],['B60','Sicilian','Richter-Rauzer',1125],['B60','Sicilian','Richter-Rauzer, Bondarevsky variation',1126],['B60','Sicilian','Richter-Rauzer, Larsen variation',1127],['B61','Sicilian','Richter-Rauzer, Larsen variation, 7.Qd2',1128],['B62','Sicilian','Richter-Rauzer, 6...e6',1129],['B62','Sicilian','Richter-Rauzer, Podvebrady variation',1130],['B62','Sicilian','Richter-Rauzer, Margate (Alekhine) variation',1131],['B62','Sicilian','Richter-Rauzer, Richter attack',1132],['B62','Sicilian','Richter-Rauzer, Keres variation',1133],['B63','Sicilian','Richter-Rauzer, Rauzer attack',1134],['B63','Sicilian','Richter-Rauzer, Rauzer attack, 7...Be7',1135],['B64','Sicilian','Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9.f4',1138],['B64','Sicilian','Richter-Rauzer, Rauzer attack, Geller variation',1139],['B65','Sicilian','Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4',1140],['B65','Sicilian','Richter-Rauzer, Rauzer attack, 7...Be7 defence, 9...Nxd4',1141],['B66','Sicilian','Richter-Rauzer, Rauzer attack, 7...a6',1142],['B67','Sicilian','Richter-Rauzer, Rauzer attack, 7...a6 defence, 8...Bd7',1144],['B68','Sicilian','Richter-Rauzer, Rauzer attack, 7...a6 defence, 9...Be7',1146],['B69','Sicilian','Richter-Rauzer, Rauzer attack, 7...a6 defence, 11.Bxf6',1149],['B70','Sicilian','dragon variation',1150],['B71','Sicilian','dragon, Levenfish variation',1151],['B71','Sicilian','dragon, Levenfish; Flohr variation',1152],['B72','Sicilian','dragon, 6.Be3',1153],['B72','Sicilian','dragon, classical attack',1155],['B72','Sicilian','dragon, classical, Amsterdam variation',1157],['B72','Sicilian','dragon, classical, Grigoriev variation',1159],['B72','Sicilian','dragon, classical, Nottingham variation',1160],['B73','Sicilian','dragon, classical, 8.O-O',1161],['B73','Sicilian','dragon, classical, Zollner gambit',1165],['B73','Sicilian','dragon, classical, Richter variation',1166],['B74','Sicilian','dragon, classical, 9.Nb3',1167],['B74','Sicilian','dragon, classical, Stockholm attack',1177],['B74','Sicilian','dragon, classical, Spielmann variation',1178],['B74','Sicilian','dragon, classical, Bernard defence',1181],['B74','Sicilian','dragon, classical, Reti-Tartakower variation',1182],['B74','Sicilian','dragon, classical, Alekhine variation',1183],['B75','Sicilian','dragon, Yugoslav attack',1184],['B76','Sicilian','dragon, Yugoslav attack, 7...O-O',1185],['B76','Sicilian','dragon, Yugoslav attack, Rauser variation',1188],['B77','Sicilian','dragon, Yugoslav attack, 9.Bc4',1189],['B77','Sicilian','dragon, Yugoslav attack, Byrne variation',1190],['B77','Sicilian','dragon, Yugoslav attack, 9...Bd7',1191],['B78','Sicilian','dragon, Yugoslav attack, 10.O-O-O',1192],['B79','Sicilian','dragon, Yugoslav attack, 12.h4',1196],['B80','Sicilian','Scheveningen variation',1197],['B80','Sicilian','Scheveningen, English variation',1200],['B80','Sicilian','Scheveningen, Vitolins variation',1201],['B80','Sicilian','Scheveningen, fianchetto variation',1202],['B81','Sicilian','Scheveningen, Keres attack',1203],['B82','Sicilian','Scheveningen, 6.f4',1204],['B82','Sicilian','Scheveningen, Tal variation',1208],['B83','Sicilian','Scheveningen, 6.Be2',1209],['B83','Sicilian','modern Scheveningen',1210],['B83','Sicilian','modern Scheveningen, main line',1215],['B83','Sicilian','modern Scheveningen, main line with Nb3',1217],['B84','Sicilian','Scheveningen (Paulsen), classical variation',1218],['B84','Sicilian','Scheveningen, classical, Nd7 system',1220],['B84','Sicilian','Scheveningen (Paulsen), classical variation',1221],['B85','Sicilian','Scheveningen, classical variation with ...Qc7 and ...Nc6',1223],['B85','Sicilian','Scheveningen, classical, Maroczy system',1226],['B85','Sicilian','Scheveningen, classical',1227],['B85','Sicilian','Scheveningen, classical main line',1230],['B86','Sicilian','Sozin attack',1231],['B87','Sicilian','Sozin with ...a6 and ...b5',1234],['B88','Sicilian','Sozin, Leonhardt variation',1235],['B88','Sicilian','Sozin, Fischer variation',1240],['B89','Sicilian','Sozin, 7.Be3',1241],['B89','Sicilian','Velimirovic attack',1243],['B90','Sicilian','Najdorf',1244],['B90','Sicilian','Najdorf, Adams attack',1245],['B90','Sicilian','Najdorf, Lipnitzky attack',1246],['B90','Sicilian','Najdorf, Byrne (English) attack',1247],['B91','Sicilian','Najdorf, Zagreb (fianchetto) variation',1248],['B92','Sicilian','Najdorf, Opovcensky variation',1249],['B93','Sicilian','Najdorf, 6.f4',1250],['B94','Sicilian','Najdorf, 6.Bg5',1251],['B94','Sicilian','Najdorf, Ivkov variation',1263],['B95','Sicilian','Najdorf, 6...e6',1264],['B96','Sicilian','Najdorf, 7.f4',1265],['B96','Sicilian','Najdorf, Polugayevsky variation',1266],['B96','Sicilian','Najdorf, Polugayevsky, Simagin variation',1271],['B97','Sicilian','Najdorf, 7...Qb6',1272],['B97','Sicilian','Najdorf, Poisoned pawn variation',1276],['B98','Sicilian','Najdorf, 7...Be7',1277],['B98','Sicilian','Najdorf, Browne variation',1281],['B98','Sicilian','Najdorf, Goteborg (Argentine) variation',1282],['B98','Sicilian','Najdorf variation',1283],['B99','Sicilian','Najdorf, 7...Be7 main line',1285],['C00','French defence','',1286],['C00','French defence, Steiner variation','',1287],['C00','French','Reti (Spielmann) variation',1288],['C00','French','Steinitz attack',1289],['C00','French','Labourdonnais variation',1290],['C00','French defence','',1291],['C00','French','Wing gambit',1295],['C00','French defence','',1296],['C00','French','Pelikan variation',1298],['C00','French','Two knights variation',1299],['C00','French','Chigorin variation',1300],['C00','French','King\'s Indian attack',1301],['C00','French','Reversed Philidor formation',1307],['C00','French defence','',1308],['C00','Lengfellner system','',1309],['C00','St. George defence','',1310],['C00','French defence','',1311],['C00','French','Schlechter variation',1312],['C00','French','Alapin variation',1313],['C01','French','exchange variation',1314],['C01','French','exchange, Svenonius variation',1318],['C01','French','exchange, Bogolyubov variation',1319],['C02','French','advance variation',1320],['C02','French','advance, Steinitz variation',1322],['C02','French','advance, Nimzovich variation',1323],['C02','French','advance, Nimzovich system',1324],['C02','French','advance variation',1325],['C02','French','advance, Wade variation',1328],['C02','French','advance variation',1329],['C02','French','advance, Paulsen attack',1330],['C02','French','advance, Milner-Barry gambit',1332],['C02','French','advance, Euwe variation',1333],['C03','French','Tarrasch',1334],['C03','French','Tarrasch, Haberditz variation',1335],['C03','French','Tarrasch, Guimard variation',1336],['C04','French','Tarrasch, Guimard main line',1338],['C05','French','Tarrasch, closed variation',1339],['C05','French','Tarrasch, Botvinnik variation',1345],['C05','French','Tarrasch, closed variation',1346],['C06','French','Tarrasch, closed variation, main line',1349],['C06','French','Tarrasch, Leningrad variation',1350],['C07','French','Tarrasch, open variation',1351],['C07','French','Tarrasch, Eliskases variation',1357],['C08','French','Tarrasch, open, 4.ed ed',1358],['C09','French','Tarrasch, open variation, main line',1360],['C10','French','Paulsen variation',1361],['C10','French','Marshall variation',1362],['C10','French','Rubinstein variation',1363],['C10','French','Fort Knox variation',1367],['C10','French','Rubinstein variation',1368],['C10','French','Rubinstein, Capablanca line',1373],['C10','French','Frere (Becker) variation',1374],['C11','French defence','',1375],['C11','French','Swiss variation',1376],['C11','French','Henneberger variation',1377],['C11','French','Steinitz variation',1378],['C11','French','Steinitz, Bradford attack',1384],['C11','French','Steinitz variation',1385],['C11','French','Steinitz, Brodsky-Jones variation',1391],['C11','French','Steinitz variation',1392],['C11','French','Steinitz, Boleslavsky variation',1394],['C11','French','Steinitz, Gledhill attack',1395],['C11','French','Burn variation',1397],['C12','French','MacCutcheon variation',1398],['C12','French','MacCutcheon, Bogolyubov variation',1404],['C12','French','MacCutcheon, advance variation',1405],['C12','French','MacCutcheon, Chigorin variation',1407],['C12','French','MacCutcheon, Grigoriev variation',1413],['C12','French','MacCutcheon, Bernstein variation',1414],['C12','French','MacCutcheon, Janowski variation',1415],['C12','French','MacCutcheon, Dr. Olland (Dutch) variation',1416],['C12','French','MacCutcheon, Tartakower variation',1418],['C12','French','MacCutcheon, Lasker variation',1419],['C12','French','MacCutcheon, Duras variation',1424],['C12','French','MacCutcheon, Lasker variation, 8...g6',1425],['C13','French','classical',1426],['C13','French','classical, Anderssen variation',1427],['C13','French','classical, Anderssen-Richter variation',1431],['C13','French','classical, Vistaneckis (Nimzovich) variation',1433],['C13','French','classical, Frankfurt variation',1435],['C13','French','classical, Tartakower variation',1436],['C13','French','Albin-Alekhine-Chatard attack',1438],['C13','French','Albin-Alekhine-Chatard attack, Maroczy variation',1439],['C13','French','Albin-Alekhine-Chatard attack, Breyer variation',1440],['C13','French','Albin-Alekhine-Chatard attack, Teichmann variation',1441],['C13','French','Albin-Alekhine-Chatard attack, Spielmann variation',1442],['C14','French','classical variation',1444],['C14','French','classical, Tarrasch variation',1445],['C14','French','classical, Rubinstein variation',1446],['C14','French','classical, Alapin variation',1447],['C14','French','classical, Pollock variation',1448],['C14','French','classical, Steinitz variation',1449],['C14','French','classical, Stahlberg variation',1456],['C15','French','Winawer (Nimzovich) variation',1457],['C15','French','Winawer, Kondratiyev variation',1462],['C15','French','Winawer, fingerslip variation',1463],['C15','French','Winawer, Alekhine (Maroczy) gambit',1464],['C15','French','Winawer, Alekhine gambit, Alatortsev variation',1473],['C15','French','Winawer, Alekhine gambit',1474],['C15','French','Winawer, Alekhine gambit, Kan variation',1476],['C16','French','Winawer, advance variation',1477],['C16','French','Winawer, Petrosian variation',1478],['C17','French','Winawer, advance variation',1479],['C17','French','Winawer, advance, Bogolyubov variation',1480],['C17','French','Winawer, advance, Russian variation',1481],['C17','French','Winawer, advance, 5.a3',1482],['C17','French','Winawer, advance, Rauzer variation',1486],['C18','French','Winawer, advance variation',1488],['C18','French','Winawer, classical variation',1489],['C19','French','Winawer, advance, 6...Ne7',1490],['C19','French','Winawer, advance, Smyslov variation',1491],['C19','French','Winawer, advance, positional main line',1492],['C19','French','Winawer, advance, poisoned pawn variation',1493],['C19','French','Winawer, advance, poisoned pawn, Euwe-Gligoric variation',1499],['C19','French','Winawer, advance, poisoned pawn, Konstantinopolsky variation',1500],['C20','King\'s pawn game','',1501],['C20','KP','Indian opening',1502],['C20','KP','Mengarini\'s opening',1503],['C20','KP','King\'s head opening',1504],['C20','KP','Patzer opening',1505],['C20','KP','Napoleon\'s opening',1506],['C20','KP','Lopez opening',1507],['C20','Alapin\'s opening','',1508],['C21','Centre game','',1510],['C21','Centre game, Kieseritsky variation','',1514],['C21','Halasz gambit','',1515],['C21','Danish gambit','',1516],['C21','Danish gambit','Collijn defence',1521],['C21','Danish gambit','Schlechter defence',1522],['C21','Danish gambit','Soerensen defence',1523],['C21','Centre game','',1524],['C22','Centre game','',1525],['C22','Centre game','Paulsen attack',1526],['C22','Centre game','Charousek variation',1529],['C22','Centre game','l\'Hermet variation',1530],['C22','Centre game','Berger variation',1531],['C22','Centre game','Kupreichik variation',1540],['C22','Centre game','Hall variation',1541],['C23','Bishop\'s opening','',1542],['C23','Bishop\'s opening','Philidor counter-attack',1543],['C23','Bishop\'s opening','Lisitsyn variation',1554],['C23','Bishop\'s opening','Calabrese counter-gambit',1555],['C23','Bishop\'s opening','Calabrese counter-gambit, Jaenisch variation',1556],['C23','Bishop\'s opening','Classical variation',1557],['C23','Bishop\'s opening','Lopez gambit',1562],['C23','Bishop\'s opening','Philidor variation',1563],['C23','Bishop\'s opening','Pratt variation',1572],['C23','Bishop\'s opening','Lewis counter-gambit',1573],['C23','Bishop\'s opening','del Rio variation',1574],['C23','Bishop\'s opening','Lewis gambit',1575],['C23','Bishop\'s opening','Wing gambit',1576],['C23','Bishop\'s opening','MacDonnell double gambit',1578],['C23','Bishop\'s opening','Four pawns\' gambit',1588],['C24','Bishop\'s opening','Berlin defence',1589],['C24','Bishop\'s opening','Greco gambit',1590],['C24','Bishop\'s opening','Ponziani gambit',1591],['C24','Bishop\'s opening','Urusov gambit',1593],['C24','Bishop\'s opening','Urusov gambit, Panov variation',1598],['C25','Vienna game','',1599],['C25','Vienna','Zhuravlev countergambit',1602],['C25','Vienna game, Max Lange defence','',1603],['C25','Vienna','Paulsen variation',1604],['C25','Vienna','Fyfe gambit',1605],['C25','Vienna gambit','',1606],['C25','Vienna','Steinitz gambit',1608],['C25','Vienna','Steinitz gambit, Zukertort defence',1611],['C25','Vienna','Steinitz gambit, Fraser-Minckwitz variation',1612],['C25','Vienna gambit','',1613],['C25','Vienna','Hamppe-Allgaier gambit',1617],['C25','Vienna','Hamppe-Allgaier gambit, Alapin variation',1618],['C25','Vienna','Hamppe-Muzio gambit',1621],['C25','Vienna','Hamppe-Muzio, Dubois variation',1626],['C25','Vienna','Pierce gambit',1627],['C25','Vienna','Pierce gambit, Rushmere attack',1635],['C26','Vienna','Falkbeer variation',1636],['C26','Vienna','Mengarini variation',1637],['C26','Vienna','Paulsen-Mieses variation',1638],['C26','Vienna game','',1639],['C27','Vienna game','',1640],['C27','Vienna','`Frankenstein-Dracula\' variation',1654],['C27','Vienna','Adams\' gambit',1655],['C27','Vienna game','',1656],['C27','Vienna','Alekhine variation',1659],['C27','Boden-Kieseritsky gambit','',1660],['C27','Boden-Kieseritsky gambit','Lichtenhein defence',1661],['C28','Vienna game','',1662],['C29','Vienna gambit','',1664],['C29','Vienna gambit','Kaufmann variation',1669],['C29','Vienna gambit','Breyer variation',1670],['C29','Vienna gambit','Paulsen attack',1671],['C29','Vienna gambit','Bardeleben variation',1672],['C29','Vienna gambit','Heyde variation',1673],['C29','Vienna gambit','',1674],['C29','Vienna gambit, Wurzburger trap','',1680],['C29','Vienna gambit, Steinitz variation','',1681],['C30','King\'s gambit','',1682],['C30','KGD','Keene\'s defence',1685],['C30','KGD','Mafia defence',1686],['C30','KGD','Norwalde variation',1687],['C30','KGD','Norwalde variation, Buecker gambit',1692],['C30','KGD','classical variation',1693],['C30','KGD','classical, Svenonius variation',1705],['C30','KGD','classical, Hanham variation',1706],['C30','KGD','classical, 4.c3',1707],['C30','KGD','classical, Marshall attack',1711],['C30','KGD','classical counter-gambit',1712],['C30','KGD','classical, Reti variation',1717],['C30','KGD','classical, Soldatenkov variation',1718],['C30','KGD','classical, Heath variation',1719],['C30','KGD','2...Nf6',1720],['C31','KGD','Falkbeer counter-gambit',1721],['C31','KGD','Falkbeer, Tartakower variation',1722],['C31','KGD','Falkbeer, Milner-Barry variation',1723],['C31','KGD','Falkbeer counter-gambit',1724],['C31','KGD','Nimzovich counter-gambit',1725],['C31','KGD','Falkbeer, 3...e4',1726],['C31','KGD','Falkbeer, Rubinstein variation',1729],['C31','KGD','Falkbeer, Nimzovich variation',1730],['C31','KGD','Falkbeer, 4.d3',1731],['C31','KGD','Falkbeer, Morphy gambit',1736],['C32','KGD','Falkbeer, 5.de',1737],['C32','KGD','Falkbeer, Alapin variation',1745],['C32','KGD','Falkbeer, main line, 7...Bf5',1746],['C32','KGD','Falkbeer, Tarrasch variation',1748],['C32','KGD','Falkbeer, Charousek gambit',1749],['C32','KGD','Falkbeer, Charousek variation',1753],['C32','KGD','Falkbeer, Keres variation',1754],['C32','KGD','Falkbeer, Reti variation',1755],['C33','King\'s gambit accepted','',1756],['C33','KGA','Tumbleweed gambit',1757],['C33','KGA','Orsini gambit',1758],['C33','KGA','Pawn\'s gambit (Stamma gambit)',1759],['C33','KGA','Schurig gambit',1760],['C33','KGA','Carrera (Basman) gambit',1761],['C33','KGA','Villemson (Steinitz) gambit',1762],['C33','KGA','Keres (Mason-Steinitz) gambit',1763],['C33','KGA','Breyer gambit',1764],['C33','KGA','Lesser bishop\'s (Petroff-Jaenisch-Tartakower) gambit',1765],['C33','KGA','bishop\'s gambit',1766],['C33','KGA','bishop\'s gambit, Chigorin\'s attack',1772],['C33','KGA','bishop\'s gambit, Greco variation',1773],['C33','KGA','bishop\'s gambit, classical defence',1774],['C33','KGA','bishop\'s gambit, Grimm attack',1779],['C33','KGA','bishop\'s gambit, classical defence',1780],['C33','KGA','bishop\'s gambit, McDonnell attack',1781],['C33','KGA','bishop\'s gambit, McDonnell attack',1782],['C33','KGA','bishop\'s gambit, Fraser variation',1784],['C33','KGA','bishop\'s gambit, classical defence, Cozio attack',1785],['C33','KGA','bishop\'s gambit, Boden defence',1786],['C33','KGA','bishop\'s gambit, Bryan counter-gambit',1787],['C33','KGA','bishop\'s gambit, Bryan counter-gambit',1788],['C33','KGA','bishop\'s gambit, Steinitz defence',1789],['C33','KGA','bishop\'s gambit, Maurian defence',1790],['C33','KGA','bishop\'s gambit, Ruy Lopez defence',1791],['C33','KGA','bishop\'s gambit, Lopez-Gianutio counter-gambit',1792],['C33','KGA','Lopez-Gianutio counter-gambit, Hein variation',1798],['C33','KGA','bishop\'s gambit, Bledow variation',1799],['C33','KGA','bishop\'s gambit, Gifford variation',1804],['C33','KGA','bishop\'s gambit, Boren-Svenonius variation',1805],['C33','KGA','bishop\'s gambit, Anderssen variation',1806],['C33','KGA','bishop\'s gambit, Morphy variation',1807],['C33','KGA','bishop\'s gambit, Cozio (Morphy) defence',1808],['C33','KGA','bishop\'s gambit, Bogolyubov variation',1809],['C33','KGA','bishop\'s gambit, Paulsen attack',1811],['C33','KGA','bishop\'s gambit, Jaenisch variation',1812],['C34','King\'s knight\'s gambit','',1813],['C34','KGA','Bonsch-Osmolovsky variation',1814],['C34','KGA','Gianutio counter-gambit',1815],['C34','KGA','Fischer defence',1816],['C34','KGA','Becker defence',1817],['C34','KGA','Schallop defence',1818],['C35','KGA','Cunningham defence',1819],['C35','KGA','Cunningham, Bertin gambit',1822],['C35','KGA','Cunningham, three pawns gambit',1826],['C35','KGA','Cunningham, Euwe defence',1827],['C36','KGA','Abbazia defence (classical defence, modern defence[!])',1828],['C36','KGA','Abbazia defence, modern variation',1830],['C36','KGA','Abbazia defence, Botvinnik variation',1836],['C37','KGA','Quaade gambit',1838],['C37','KGA','Rosentreter gambit',1839],['C37','KGA','Soerensen gambit',1841],['C37','KGA','King\'s knight\'s gambit',1842],['C37','KGA','Blachly gambit',1843],['C37','KGA','Lolli gambit (wild Muzio gambit)',1845],['C37','KGA','Lolli gambit, Young variation',1855],['C37','KGA','Ghulam Kassim gambit',1856],['C37','KGA','MacDonnell gambit',1857],['C37','KGA','Salvio gambit',1858],['C37','KGA','Silberschmidt gambit',1863],['C37','KGA','Salvio gambit, Anderssen counter-attack',1864],['C37','KGA','Cochrane gambit',1865],['C37','KGA','Herzfeld gambit',1866],['C37','KGA','Muzio gambit',1867],['C37','KGA','Muzio gambit, Paulsen variation',1879],['C37','KGA','double Muzio gambit',1880],['C37','KGA','Muzio gambit, From defence',1881],['C37','KGA','Muzio gambit, Holloway defence',1882],['C37','KGA','Muzio gambit, Kling and Horwitz counter-attack',1883],['C37','KGA','Muzio gambit, Brentano defence',1884],['C38','King\'s knight\'s gambit','',1885],['C38','KGA','Hanstein gambit',1886],['C38','KGA','Philidor gambit',1887],['C38','KGA','Greco gambit',1897],['C38','KGA','Philidor gambit, Schultz variation',1898],['C39','King\'s knight\'s gambit','',1899],['C39','KGA','Allgaier gambit',1901],['C39','KGA','Allgaier, Horny defence',1908],['C39','KGA','Allgaier, Thorold variation',1909],['C39','KGA','Allgaier, Cook variation',1915],['C39','KGA','Allgaier, Blackburne gambit',1916],['C39','KGA','Allgaier, Walker attack',1917],['C39','KGA','Allgaier, Urusov attack',1921],['C39','KGA','Allgaier, Schlechter defence',1922],['C39','KGA','Kieseritsky, Paulsen defence',1924],['C39','KGA','Kieseritsky, long whip (Stockwhip, classical) defence',1925],['C39','KGA','Kieseritsky, long whip defence, Jaenisch variation',1930],['C39','KGA','Kieseritsky, Brentano (Campbell) defence',1931],['C39','KGA','Kieseritsky, Brentano defence, Kaplanek variation',1938],['C39','KGA','Kieseritsky, Brentano defence',1939],['C39','KGA','Kieseritsky, Brentano defence, Caro variation',1941],['C39','KGA','Kieseritsky, Salvio (Rosenthal) defence',1942],['C39','KGA','Kieseritsky, Salvio defence, Cozio variation',1945],['C39','KGA','Kieseritsky, Polerio defence',1946],['C39','KGA','Kieseritsky, Neumann defence',1947],['C39','KGA','Kieseritsky, Kolisch defence',1948],['C39','KGA','Kieseritsky, Berlin defence',1949],['C39','KGA','Kieseritsky, Berlin defence, Riviere variation',1951],['C39','KGA','Kieseritsky, Berlin defence, 6.Bc4',1952],['C39','KGA','Kieseritsky, Rice gambit',1956],['C40','King\'s knight opening','',1957],['C40','Gunderam defence','',1958],['C40','Greco defence','',1959],['C40','Damiano\'s defence','',1960],['C40','QP counter-gambit (elephant gambit)','',1961],['C40','QP counter-gambit','Maroczy gambit',1963],['C40','Latvian counter-gambit','',1964],['C40','Latvian','Nimzovich variation',1971],['C40','Latvian','Fraser defence',1972],['C40','Latvian gambit, 3.Bc4','',1973],['C40','Latvian','Behting variation',1982],['C40','Latvian','Polerio variation',1983],['C40','Latvian','corkscrew counter-gambit',1984],['C41','Philidor\'s defence','',1985],['C41','Philidor','Steinitz variation',1988],['C41','Philidor','Lopez counter-gambit',1989],['C41','Philidor','Lopez counter-gambit, Jaenisch variation',1994],['C41','Philidor\'s defence','',1995],['C41','Philidor','Philidor counter-gambit',1996],['C41','Philidor','Philidor counter-gambit, del Rio attack',2001],['C41','Philidor','Philidor counter-gambit, Berger variation',2003],['C41','Philidor','Philidor counter-gambit, Zukertort variation',2004],['C41','Philidor','exchange variation',2005],['C41','Philidor','Boden variation',2007],['C41','Philidor','exchange variation',2008],['C41','Philidor','Paulsen attack',2010],['C41','Philidor','exchange variation',2011],['C41','Philidor','Berger variation',2022],['C41','Philidor','Larsen variation',2023],['C41','Philidor','Nimzovich (Jaenisch) variation',2024],['C41','Philidor','Improved Hanham variation',2026],['C41','Philidor','Nimzovich, Sozin variation',2034],['C41','Philidor','Nimzovich, Larobok variation',2037],['C41','Philidor','Nimzovich variation',2038],['C41','Philidor','Nimzovich, Sokolsky variation',2040],['C41','Philidor','Nimzovich, Rellstab variation',2041],['C41','Philidor','Nimzovich, Locock variation',2042],['C41','Philidor','Nimzovich, Klein variation',2043],['C41','Philidor','Hanham variation',2044],['C41','Philidor','Hanham, Krause variation',2047],['C41','Philidor','Hanham, Steiner variation',2049],['C41','Philidor','Hanham, Kmoch variation',2050],['C41','Philidor','Hanham, Berger variation',2057],['C41','Philidor','Hanham, Schlechter variation',2058],['C41','Philidor','Hanham, Delmar variation',2059],['C42','Petrov\'s defence','',2060],['C42','Petrov','French attack',2065],['C42','Petrov','Kaufmann attack',2066],['C42','Petrov','Nimzovich attack',2067],['C42','Petrov','Cozio (Lasker) attack',2068],['C42','Petrov','classical attack',2069],['C42','Petrov','classical attack, Chigorin variation',2075],['C42','Petrov','classical attack, Berger variation',2079],['C42','Petrov','classical attack, Krause variation',2080],['C42','Petrov','classical attack, Maroczy variation',2081],['C42','Petrov','classical attack, Jaenisch variation',2082],['C42','Petrov','classical attack, Mason variation',2083],['C42','Petrov','classical attack, Marshall variation',2084],['C42','Petrov','classical attack, Tarrasch variation',2088],['C42','Petrov','classical attack, Marshall trap',2092],['C42','Petrov','classical attack, close variation',2093],['C42','Petrov','Cochrane gambit',2094],['C42','Petrov','Paulsen attack',2095],['C42','Petrov','Damiano variation',2096],['C42','Petrov three knights game','',2097],['C42','Petrov','Italian variation',2098],['C43','Petrov','modern (Steinitz) attack',2099],['C43','Petrov','modern attack, main line',2103],['C43','Petrov','modern attack, Steinitz variation',2104],['C43','Petrov','modern attack, Bardeleben variation',2107],['C43','Petrov','Urusov gambit',2108],['C43','Petrov','modern attack, Symmetrical variation',2109],['C43','Petrov','modern attack, Trifunovic variation',2117],['C44','King\'s pawn game','',2118],['C44','Irish (Chicago) gambit','',2121],['C44','Konstantinopolsky opening','',2122],['C44','Dresden opening','',2123],['C44','Inverted Hungarian','',2124],['C44','Inverted Hanham','',2128],['C44','Tayler opening','',2129],['C44','Ponziani opening','',2130],['C44','Ponziani','Caro variation',2133],['C44','Ponziani','Leonhardt variation',2134],['C44','Ponziani','Steinitz variation',2135],['C44','Ponziani','Jaenisch counter-attack',2136],['C44','Ponziani','Fraser defence',2140],['C44','Ponziani','Reti variation',2141],['C44','Ponziani','Romanishin variation',2142],['C44','Ponziani counter-gambit','',2143],['C44','Ponziani counter-gambit, Schmidt attack','',2146],['C44','Ponziani counter-gambit, Cordel variation','',2153],['C44','Scotch opening','',2154],['C44','Scotch','Lolli variation',2155],['C44','Scotch','Cochrane variation',2162],['C44','Scotch','Relfsson gambit (\'MacLopez\')',2164],['C44','Scotch','Goering gambit',2165],['C44','Scotch','Sea-cadet mate',2177],['C44','Scotch','Goering gambit',2178],['C44','Scotch','Goering gambit, Bardeleben variation',2180],['C44','Scotch gambit','',2181],['C44','Scotch gambit','Anderssen (Paulsen, Suhle) counter-attack',2186],['C44','Scotch gambit','',2187],['C44','Scotch gambit','Cochrane-Shumov defence',2196],['C44','Scotch gambit','Vitzhum attack',2197],['C44','Scotch gambit','',2198],['C44','Scotch gambit','Hanneken variation',2208],['C44','Scotch gambit','',2209],['C44','Scotch gambit','Cochrane variation',2211],['C44','Scotch gambit','Benima defence',2212],['C44','Scotch gambit','Dubois-Reti defence',2213],['C45','Scotch game','',2214],['C45','Scotch','Ghulam Kassim variation',2218],['C45','Scotch','Pulling counter-attack',2219],['C45','Scotch','Horwitz attack',2220],['C45','Scotch','Berger variation',2232],['C45','Scotch game','',2233],['C45','Scotch','Rosenthal variation',2240],['C45','Scotch','Fraser attack',2241],['C45','Scotch','Steinitz variation',2242],['C45','Scotch','Schmidt variation',2243],['C45','Scotch','Mieses variation',2246],['C45','Scotch','Tartakower variation',2247],['C45','Scotch game','',2248],['C45','Scotch','Blackburne attack',2253],['C45','Scotch','Gottschall variation',2264],['C45','Scotch','Paulsen attack',2265],['C45','Scotch','Paulsen, Gunsberg defence',2266],['C45','Scotch','Meitner variation',2267],['C45','Scotch','Blumenfeld attack',2268],['C45','Scotch','Potter variation',2269],['C45','Scotch','Romanishin variation',2270],['C46','Three knights game','',2271],['C46','Three knights','Schlechter variation',2274],['C46','Three knights','Winawer defence (Gothic defence)',2275],['C46','Three knights','Steinitz variation',2276],['C46','Three knights','Steinitz, Rosenthal variation',2279],['C46','Four knights game','',2280],['C46','Four knights','Schultze-Mueller gambit',2281],['C46','Four knights','Italian variation',2282],['C46','Four knights','Gunsberg variation',2283],['C47','Four knights','Scotch variation',2284],['C47','Four knights','Scotch, Krause variation',2286],['C47','Four knights','Scotch, 4...exd4',2287],['C47','Four knights','Belgrade gambit',2288],['C48','Four knights','Spanish variation',2289],['C48','Four knights','Ranken variation',2291],['C48','Four knights','Spielmann variation',2302],['C48','Four knights','Spanish, classical defence',2303],['C48','Four knights','Bardeleben variation',2313],['C48','Four knights','Marshall variation',2314],['C48','Four knights','Rubinstein counter-gambit',2315],['C48','Four knights','Rubinstein counter-gambit, Bogolyubov variation',2318],['C48','Four knights','Rubinstein counter-gambit, 5.Be2',2319],['C48','Four knights','Rubinstein counter-gambit Maroczy variation',2328],['C48','Four knights','Rubinstein counter-gambit, exchange variation',2329],['C48','Four knights','Rubinstein counter-gambit, Henneberger variation',2330],['C49','Four knights','double Ruy Lopez',2331],['C49','Four knights','Gunsberg counter-attack',2337],['C49','Four knights','double Ruy Lopez',2338],['C49','Four knights','Alatortsev variation',2341],['C49','Four knights','',2342],['C49','Four knights','Janowski variation',2345],['C49','Four knights','Svenonius variation',2346],['C49','Four knights','symmetrical variation',2347],['C49','Four knights','symmetrical, Metger unpin',2351],['C49','Four knights','symmetrical, Capablanca variation',2355],['C49','Four knights','symmetrical, Pillsbury variation',2356],['C49','Four knights','symmetrical, Blake variation',2362],['C49','Four knights','symmetrical, Tarrasch variation',2363],['C49','Four knights','symmetrical, Maroczy system',2364],['C49','Four knights','Nimzovich (Paulsen) variation',2365],['C50','King\'s pawn game','',2366],['C50','Blackburne shilling gambit','',2375],['C50','Rousseau gambit','',2376],['C50','Hungarian defence','',2377],['C50','Hungarian defence','Tartakower variation',2383],['C50','Giuoco Piano','',2384],['C50','Giuoco Piano','four knights variation',2386],['C50','Giuoco Piano','Jerome gambit',2387],['C50','Giuoco Pianissimo','',2388],['C50','Giuoco Pianissimo','Dubois variation',2391],['C50','Giuoco Pianissimo','',2392],['C50','Giuoco Pianissimo','Italian four knights variation',2393],['C50','Giuoco Pianissimo','Canal variation',2395],['C51','Evans gambit declined','',2396],['C51','Evans gambit declined, Lange variation','',2401],['C51','Evans gambit declined, Pavlov variation','',2412],['C51','Evans gambit declined, Hirschbach variation','',2413],['C51','Evans gambit declined, Vasquez variation','',2416],['C51','Evans gambit declined, Hicken variation','',2421],['C51','Evans gambit declined, 5.a4','',2422],['C51','Evans gambit declined, Showalter variation','',2424],['C51','Evans gambit declined, Cordel variation','',2425],['C51','Evans counter-gambit','',2426],['C51','Evans gambit','',2427],['C51','Evans gambit','normal variation',2435],['C51','Evans gambit','Ulvestad variation',2438],['C51','Evans gambit','Paulsen variation',2439],['C51','Evans gambit','Morphy attack',2440],['C51','Evans gambit','Goering attack',2442],['C51','Evans gambit','Steinitz variation',2444],['C51','Evans gambit','',2445],['C51','Evans gambit','Fraser attack',2446],['C51','Evans gambit','Fraser-Mortimer attack',2452],['C51','Evans gambit','Stone-Ware variation',2453],['C51','Evans gambit','Mayet defence',2454],['C51','Evans gambit','5...Be7',2455],['C51','Evans gambit','Cordel variation',2457],['C52','Evans gambit','',2458],['C52','Evans gambit','compromised defence',2462],['C52','Evans gambit','compromised defence, Paulsen variation',2469],['C52','Evans gambit','compromised defence, Potter variation',2470],['C52','Evans gambit','Leonhardt variation',2471],['C52','Evans gambit','',2472],['C52','Evans gambit','Tartakower attack',2473],['C52','Evans gambit','Levenfish variation',2481],['C52','Evans gambit','Sokolsky variation',2482],['C52','Evans gambit','',2483],['C52','Evans gambit','Richardson attack',2487],['C52','Evans gambit','',2488],['C52','Evans gambit','Waller attack',2491],['C52','Evans gambit','Lasker defence',2492],['C52','Evans gambit','Sanders-Alapin variation',2493],['C52','Evans gambit','Alapin-Steinitz variation',2494],['C53','Giuoco Piano','',2495],['C53','Giuoco Piano','LaBourdonnais variation',2500],['C53','Giuoco Piano','close variation',2501],['C53','Giuoco Piano','centre-holding variation',2503],['C53','Giuoco Piano','Tarrasch variation',2510],['C53','Giuoco Piano','Mestel variation',2511],['C53','Giuoco Piano','Eisinger variation',2514],['C53','Giuoco Piano','',2515],['C53','Giuoco Piano','Bird\'s attack',2516],['C53','Giuoco Piano','',2517],['C53','Giuoco Piano','Ghulam Kassim variation',2525],['C53','Giuoco Piano','',2526],['C53','Giuoco Piano','Anderssen variation',2530],['C54','Giuoco Piano','',2531],['C54','Giuoco Piano','Krause variation',2543],['C54','Giuoco Piano','Cracow variation',2544],['C54','Giuoco Piano','Greco\'s attack',2545],['C54','Giuoco Piano','Greco variation',2548],['C54','Giuoco Piano','Bernstein variation',2552],['C54','Giuoco Piano','Aitken variation',2553],['C54','Giuoco Piano','',2554],['C54','Giuoco Piano','Steinitz variation',2557],['C54','Giuoco Piano','Moeller (Therkatz) attack',2558],['C54','Giuoco Piano','Therkatz-Herzog variation',2568],['C54','Giuoco Piano','Moeller, bayonet attack',2569],['C55','Two knights defence','',2570],['C55','Giuoco piano','Rosentreter variation',2581],['C55','Giuoco piano','',2582],['C55','Giuoco piano','Holzhausen attack',2587],['C55','Two knights defence (Modern bishop\'s opening)','',2588],['C55','Two knights defence','',2589],['C55','Two knights defence, Keidanz variation','',2600],['C55','Two knights defence, Perreux variation','',2601],['C55','Two knights defence','',2602],['C55','two knights','Max Lange attack',2604],['C55','two knights','Max Lange attack, Berger variation',2619],['C55','two knights','Max Lange attack, Marshall variation',2620],['C55','two knights','Max Lange attack, Rubinstein variation',2621],['C55','two knights','Max Lange attack, Loman defence',2622],['C55','two knights','Max Lange attack, Schlechter variation',2623],['C55','two knights','Max Lange attack, Steinitz variation',2624],['C55','two knights','Max Lange attack, Krause variation',2625],['C56','Two knights defence','',2626],['C56','two knights defence','Yurdansky attack',2641],['C56','two knights defence','Canal variation',2642],['C57','Two knights defence','',2643],['C57','two knights defence','Wilkes Barre (Traxler) variation',2644],['C57','two knights defence','Ulvestad variation',2647],['C57','two knights defence','Fritz variation',2648],['C57','two knights defence','Fritz, Gruber variation',2653],['C57','two knights defence','Lolli attack',2655],['C57','two knights defence','Pincus variation',2656],['C57','two knights defence','Fegatello attack',2657],['C57','two knights defence','Fegatello attack, Leonhardt variation',2668],['C57','two knights defence','Fegatello attack, Polerio defence',2669],['C58','two knights defence','',2670],['C58','two knights defence','Kieseritsky variation',2671],['C58','two knights defence','Yankovich variation',2679],['C58','two knights defence','Maroczy variation',2680],['C58','Two knights defence','',2681],['C58','two knights defence','Bogolyubov variation',2685],['C58','two knights defence','Paoli variation',2687],['C58','two knights defence','Colman variation',2688],['C58','two knights defence','Blackburne variation',2689],['C58','Two knights defence','',2690],['C59','Two knights defence','',2691],['C59','two knights defence','Knorre variation',2698],['C59','two knights defence','Goering variation',2699],['C59','two knights defence','Steinitz variation',2700],['C60','Ruy Lopez (Spanish opening)','',2701],['C60','Ruy Lopez','Nuernberg variation',2702],['C60','Ruy Lopez','Pollock defence',2703],['C60','Ruy Lopez','Lucena defence',2704],['C60','Ruy Lopez','Vinogradov variation',2705],['C60','Ruy Lopez','Brentano defence',2706],['C60','Ruy Lopez','fianchetto (Smyslov/Barnes) defence',2707],['C60','Ruy Lopez','Cozio defence',2708],['C60','Ruy Lopez','Cozio defence, Paulsen variation',2710],['C61','Ruy Lopez','Bird\'s defence',2711],['C61','Ruy Lopez','Bird\'s defence, Paulsen variation',2715],['C62','Ruy Lopez','old Steinitz defence',2716],['C62','Ruy Lopez','old Steinitz defence, Nimzovich attack',2721],['C62','Ruy Lopez','old Steinitz defence, semi-Duras variation',2722],['C63','Ruy Lopez','Schliemann defence',2723],['C63','Ruy Lopez','Schliemann defence, Berger variation',2724],['C64','Ruy Lopez','classical (Cordel) defence',2725],['C64','Ruy Lopez','classical defence, Zaitsev variation',2728],['C64','Ruy Lopez','classical defence, 4.c3',2729],['C64','Ruy Lopez','classical defence, Benelux variation  ',2734],['C64','Ruy Lopez','classical defence, Charousek variation',2735],['C64','Ruy Lopez','classical defence, Boden variation',2736],['C64','Ruy Lopez','Cordel gambit',2737],['C65','Ruy Lopez','Berlin defence',2738],['C65','Ruy Lopez','Berlin defence, Nyholm attack',2741],['C65','Ruy Lopez','Berlin defence, Mortimer variation',2743],['C65','Ruy Lopez','Berlin defence, Mortimer trap',2745],['C65','Ruy Lopez','Berlin defence, Anderssen variation',2747],['C65','Ruy Lopez','Berlin defence, Duras variation',2748],['C65','Ruy Lopez','Berlin defence, Kaufmann variation',2750],['C65','Ruy Lopez','Berlin defence, 4.O-O',2751],['C65','Ruy Lopez','Berlin defence, Beverwijk variation',2752],['C66','Ruy Lopez','Berlin defence, 4.O-O, d6',2753],['C66','Ruy Lopez','Berlin defence, hedgehog variation',2757],['C66','Ruy Lopez','Berlin defence, Tarrasch trap',2759],['C66','Ruy Lopez','closed Berlin defence, Bernstein variation',2760],['C66','Ruy Lopez','closed Berlin defence, Showalter variation',2761],['C66','Ruy Lopez','closed Berlin defence, Wolf variation',2762],['C66','Ruy Lopez','closed Berlin defence, Chigorin variation',2763],['C67','Ruy Lopez','Berlin defence, open variation',2764],['C67','Ruy Lopez','open Berlin defence, l\'Hermet variation',2767],['C67','Ruy Lopez','open Berlin defence, Showalter variation',2768],['C67','Ruy Lopez','open Berlin defence, 5...Be7',2769],['C67','Ruy Lopez','Berlin defence, Rio de Janeiro variation',2785],['C67','Ruy Lopez','Berlin defence, Zukertort variation',2786],['C67','Ruy Lopez','Berlin defence, Pillsbury variation',2787],['C67','Ruy Lopez','Berlin defence, Winawer attack',2788],['C67','Ruy Lopez','Berlin defence, Cordel variation',2789],['C67','Ruy Lopez','Berlin defence, Trifunovic variation',2790],['C67','Ruy Lopez','Berlin defence, Minckwitz variation',2791],['C67','Ruy Lopez','Berlin defence, Rosenthal variation',2792],['C68','Ruy Lopez','exchange variation',2794],['C68','Ruy Lopez','exchange, Alekhine variation',2801],['C68','Ruy Lopez','exchange, Keres variation',2802],['C68','Ruy Lopez','exchange, Romanovsky variation',2804],['C69','Ruy Lopez','exchange variation, 5.O-O',2805],['C69','Ruy Lopez','exchange variation, Alapin gambit',2808],['C69','Ruy Lopez','exchange, Gligoric variation',2809],['C69','Ruy Lopez','exchange, Bronstein variation',2810],['C70','Ruy Lopez','',2811],['C70','Ruy Lopez','fianchetto defence deferred',2812],['C70','Ruy Lopez','Cozio defence deferred',2813],['C70','Ruy Lopez','Bird\'s defence deferred',2814],['C70','Ruy Lopez','Alapin\'s defence deferred',2815],['C70','Ruy Lopez','Classical defence deferred',2816],['C70','Ruy Lopez','Caro variation',2817],['C70','Ruy Lopez','Graz variation',2819],['C70','Ruy Lopez','Taimanov (chase/wing/accelerated counterthrust) variation',2820],['C70','Ruy Lopez','Schliemann defence deferred',2821],['C71','Ruy Lopez','modern Steinitz defence',2822],['C71','Ruy Lopez','Noah\'s ark trap',2830],['C71','Ruy Lopez','modern Steinitz defence, Three knights variation',2831],['C71','Ruy Lopez','modern Steinitz defence, Duras (Keres) variation',2832],['C72','Ruy Lopez','modern Steinitz defence, 5.O-O',2833],['C73','Ruy Lopez','modern Steinitz defence, Richter variation',2836],['C73','Ruy Lopez','modern Steinitz defence, Alapin variation',2837],['C74','Ruy Lopez','modern Steinitz defence',2838],['C74','Ruy Lopez','modern Steinitz defence, siesta variation',2839],['C74','Ruy Lopez','Siesta, Kopayev variation',2842],['C75','Ruy Lopez','modern Steinitz defence',2843],['C75','Ruy Lopez','modern Steinitz defence, Rubinstein variation',2845],['C76','Ruy Lopez','modern Steinitz defence, fianchetto (Bronstein) variation',2846],['C77','Ruy Lopez','Morphy defence',2847],['C77','Ruy Lopez','four knights (Tarrasch) variation',2848],['C77','Ruy Lopez','Treybal (Bayreuth) variation (exchange var. deferred)',2849],['C77','Ruy Lopez','Wormald (Alapin) attack',2850],['C77','Ruy Lopez','Wormald attack, Gruenfeld variation',2857],['C77','Ruy Lopez','Anderssen variation',2858],['C77','Ruy Lopez','Morphy defence, Duras variation',2860],['C78','Ruy Lopez','5.O-O',2861],['C78','Ruy Lopez','Wing attack',2865],['C78','Ruy Lopez','...b5 & ...d6',2866],['C78','Ruy Lopez','Rabinovich variation',2874],['C78','Ruy Lopez','Archangelsk (counterthrust) variation',2875],['C78','Ruy Lopez','Moeller defence',2876],['C79','Ruy Lopez','Steinitz defence deferred (Russian defence)',2877],['C79','Ruy Lopez','Steinitz defence deferred, Lipnitsky variation',2881],['C79','Ruy Lopez','Steinitz defence deferred, Rubinstein variation',2882],['C79','Ruy Lopez','Steinitz defence deferred, Boleslavsky variation',2887],['C80','Ruy Lopez','open (Tarrasch) defence',2888],['C80','Ruy Lopez','open, Tartakower variation',2889],['C80','Ruy Lopez','open, Knorre variation',2890],['C80','Ruy Lopez','open, 6.d4',2891],['C80','Ruy Lopez','open, Riga variation',2892],['C80','Ruy Lopez','open, 6.d4 b5',2893],['C80','Ruy Lopez','open, Friess attack',2894],['C80','Ruy Lopez','open, Richter variation',2895],['C80','Ruy Lopez','open, 7.Bb3',2896],['C80','Ruy Lopez','open, Schlechter defence',2899],['C80','Ruy Lopez','open, Berger variation',2902],['C80','Ruy Lopez','open, Harksen gambit',2903],['C80','Ruy Lopez','open, 8.de',2904],['C80','Ruy Lopez','open, Zukertort variation',2905],['C80','Ruy Lopez','open, 8...Be6',2906],['C80','Ruy Lopez','open, Bernstein variation',2907],['C80','Ruy Lopez','open, Bernstein variation, Karpov gambit',2911],['C81','Ruy Lopez','open, Howell attack',2912],['C81','Ruy Lopez','open, Howell attack, Ekstroem variation',2919],['C81','Ruy Lopez','open, Howell attack, Adam variation',2920],['C82','Ruy Lopez','open, 9.c3',2921],['C82','Ruy Lopez','open, Berlin variation',2922],['C82','Ruy Lopez','open, Italian variation',2923],['C82','Ruy Lopez','open, St. Petersburg variation',2924],['C82','Ruy Lopez','open, Dilworth variation',2927],['C82','Ruy Lopez','open, Motzko attack',2928],['C82','Ruy Lopez','open, Motzko attack, Nenarokov variation',2929],['C83','Ruy Lopez','open, classical defence',2930],['C83','Ruy Lopez','open, Malkin variation',2933],['C83','Ruy Lopez','open, 9...Be7, 10.Re1',2934],['C83','Ruy Lopez','open, Tarrasch trap',2940],['C83','Ruy Lopez','open, Breslau variation',2941],['C84','Ruy Lopez','closed defence',2942],['C84','Ruy Lopez','closed, centre attack',2943],['C84','Ruy Lopez','closed, Basque gambit (North Spanish variation)',2947],['C85','Ruy Lopez','Exchange variation doubly deferred (DERLD)',2948],['C86','Ruy Lopez','Worrall attack',2949],['C86','Ruy Lopez','Worrall attack, sharp line',2952],['C86','Ruy Lopez','Worrall attack, solid line',2953],['C87','Ruy Lopez','closed, Averbach variation',2955],['C88','Ruy Lopez','closed',2957],['C88','Ruy Lopez','closed, Leonhardt variation',2970],['C88','Ruy Lopez','closed, Balla variation',2971],['C88','Ruy Lopez','closed, 7...d6, 8.d4',2972],['C88','Ruy Lopez','Noah\'s ark trap',2977],['C88','Ruy Lopez','Trajkovic counter-attack',2978],['C88','Ruy Lopez','closed, 7...O-O',2979],['C88','Ruy Lopez','closed, anti-Marshall 8.a4',2980],['C88','Ruy Lopez','closed, 8.c3',2981],['C89','Ruy Lopez','Marshall counter-attack',2982],['C89','Ruy Lopez','Marshall counter-attack, 11...c6',2988],['C89','Ruy Lopez','Marshall, Kevitz variation',2993],['C89','Ruy Lopez','Marshall, main line, 12.d2d4',2994],['C89','Ruy Lopez','Marshall, main line, 14...Qh3',2999],['C89','Ruy Lopez','Marshall, main line, Spassky variation',3007],['C89','Ruy Lopez','Marshall, Herman Steiner variation',3008],['C90','Ruy Lopez','closed (with ...d6)',3009],['C90','Ruy Lopez','closed, Pilnik variation',3010],['C90','Ruy Lopez','closed, Lutikov variation',3011],['C90','Ruy Lopez','closed, Suetin variation',3012],['C91','Ruy Lopez','closed, 9.d4',3013],['C91','Ruy Lopez','closed, Bogolyubov variation',3014],['C92','Ruy Lopez','closed, 9.h3',3015],['C92','Ruy Lopez','closed, Keres (9...a5) variation',3016],['C92','Ruy Lopez','closed, Kholmov variation',3017],['C92','Ruy Lopez','closed, Ragozin-Petrosian (`Keres\') variation',3018],['C92','Ruy Lopez','closed, Flohr-Zaitsev system (Lenzerheide variation)',3019],['C93','Ruy Lopez','closed, Smyslov defence',3020],['C94','Ruy Lopez','closed, Breyer defence',3021],['C95','Ruy Lopez','closed, Breyer, 10.d4',3022],['C95','Ruy Lopez','closed, Breyer, Borisenko variation',3023],['C95','Ruy Lopez','closed, Breyer, Gligoric variation',3027],['C95','Ruy Lopez','closed, Breyer, Simagin variation',3028],['C96','Ruy Lopez','closed (8...Na5)',3030],['C96','Ruy Lopez','closed, Rossolimo defence',3033],['C96','Ruy Lopez','closed (10...c5)',3034],['C96','Ruy Lopez','closed, Borisenko defence',3036],['C96','Ruy Lopez','closed, Keres (...Nd7) defence',3037],['C97','Ruy Lopez','closed, Chigorin defence',3038],['C97','Ruy Lopez','closed, Chigorin, Yugoslav system',3044],['C98','Ruy Lopez','closed, Chigorin, 12...Nc6',3045],['C98','Ruy Lopez','closed, Chigorin, Rauzer attack',3046],['C99','Ruy Lopez','closed, Chigorin, 12...c5d4',3048],['D00','Queen\'s pawn game','',3049],['D00','Queen\'s pawn, Mason variation','',3050],['D00','Queen\'s pawn, Mason variation, Steinitz counter-gambit','',3051],['D00','Levitsky attack (Queen\'s bishop attack)','',3052],['D00','Blackmar gambit','',3053],['D00','Queen\'s pawn','stonewall attack',3056],['D00','Queen\'s pawn','Chigorin variation',3057],['D00','Queen\'s pawn','Anti-Veresov',3058],['D00','Blackmar-Diemer gambit','',3060],['D00','Blackmar-Diemer','Euwe defence',3065],['D00','Blackmar-Diemer','Lemberg counter-gambit',3066],['D01','Richter-Veresov attack','',3067],['D01','Richter-Veresov attack, Veresov variation','',3069],['D01','Richter-Veresov attack, Richter variation','',3070],['D02','Queen\'s pawn game','',3071],['D02','Queen\'s pawn game, Chigorin variation','',3072],['D02','Queen\'s pawn game, Krause variation','',3073],['D02','Queen\'s pawn game','',3074],['D02','Queen\'s bishop game','',3075],['D03','Torre attack (Tartakower variation)','',3076],['D04','Queen\'s pawn game','',3077],['D05','Queen\'s pawn game','',3078],['D05','Queen\'s pawn game, Zukertort variation','',3081],['D05','Queen\'s pawn game','',3082],['D05','Queen\'s pawn game, Rubinstein (Colle-Zukertort) variation','',3084],['D05','Colle system','',3085],['D06','Queen\'s Gambit','',3086],['D06','QGD','Grau (Sahovic) defence',3087],['D06','QGD','Marshall defence',3088],['D06','QGD','symmetrical (Austrian) defence',3089],['D07','QGD','Chigorin defence',3090],['D07','QGD','Chigorin defence, Janowski variation',3093],['D08','QGD','Albin counter-gambit',3094],['D08','QGD','Albin counter-gambit, Lasker trap',3100],['D08','QGD','Albin counter-gambit',3101],['D08','QGD','Albin counter-gambit, Alapin variation',3103],['D08','QGD','Albin counter-gambit, Krenosz variation',3110],['D08','QGD','Albin counter-gambit, Janowski variation',3111],['D08','QGD','Albin counter-gambit, Balogh variation',3112],['D09','QGD','Albin counter-gambit, 5.g3',3113],['D10','QGD Slav defence','',3114],['D10','QGD Slav defence, Alekhine variation','',3117],['D10','QGD Slav','Winawer counter-gambit',3118],['D10','QGD Slav defence','exchange variation',3119],['D11','QGD Slav','3.Nf3',3120],['D11','QGD Slav','Breyer variation',3122],['D11','QGD Slav','4.e3',3123],['D12','QGD Slav','4.e3 Bf5',3124],['D12','QGD Slav','Landau variation',3131],['D12','QGD Slav','exchange variation',3132],['D12','QGD Slav','Amsterdam variation',3135],['D13','QGD Slav','exchange variation',3137],['D14','QGD Slav','exchange variation, 6.Bf4 Bf5',3141],['D14','QGD Slav','exchange, Trifunovic variation',3145],['D15','QGD Slav','4.Nc3',3146],['D15','QGD Slav','Suechting variation',3147],['D15','QGD Slav','Schlechter variation',3148],['D15','QGD Slav accepted','',3149],['D15','QGD Slav','5.e3 (Alekhine variation)',3150],['D15','QGD Slav','Slav gambit',3151],['D15','QGD Slav','Tolush-Geller gambit',3153],['D16','QGD Slav accepted','Alapin variation',3154],['D16','QGD Slav','Smyslov variation',3157],['D16','QGD Slav','Soultanbeieff variation',3158],['D16','QGD Slav','Steiner variation',3159],['D17','QGD Slav','Czech defence',3160],['D17','QGD Slav','Krause attack',3161],['D17','QGD Slav','Carlsbad variation',3166],['D17','QGD Slav','Wiesbaden variation',3167],['D18','QGD Slav','Dutch variation',3168],['D18','QGD Slav','Dutch, Lasker variation',3169],['D19','QGD Slav','Dutch variation',3173],['D19','QGD Slav','Dutch variation, main line',3175],['D19','QGD Slav','Dutch, Saemisch variation',3177],['D20','Queen\'s gambit accepted','',3178],['D20','QGA','3.e4',3179],['D20','QGA','Linares variation',3184],['D20','QGA','Schwartz defence',3185],['D21','QGA','3.Nf3',3186],['D21','QGA','Ericson variation',3187],['D22','QGA','Alekhine defence',3188],['D21','QGA','Alekhine defense, Borisenko-Furman variation',3189],['D22','QGA','Alekhine defence, Alatortsev variation',3194],['D22','QGA','Haberditz variation',3195],['D23','Queen\'s gambit accepted','',3196],['D23','QGA','Mannheim variation',3197],['D24','QGA, 4.Nc3','',3198],['D24','QGA, Bogolyubov variation','',3200],['D25','QGA, 4.e3','',3201],['D25','QGA, Smyslov variation','',3202],['D25','QGA, Janowsky-Larsen variation','',3203],['D25','QGA, Flohr variation','',3204],['D26','QGA','4...e6',3205],['D26','QGA','classical variation',3207],['D26','QGA','classical, Furman variation',3216],['D26','QGA','classical variation, 6.O-O',3217],['D26','QGA','classical, Steinitz variation',3218],['D27','QGA','classical, 6...a6',3219],['D27','QGA','classical, Rubinstein variation',3220],['D27','QGA','classical, Geller variation',3221],['D28','QGA','classical, 7.Qe2',3222],['D28','QGA','classical, 7...b5',3223],['D28','QGA','classical, Flohr variation',3235],['D29','QGA','classical, 8...Bb7',3236],['D29','QGA','classical, Smyslov variation',3240],['D30','Queen\'s gambit declined','',3241],['D30','QGD Slav','',3246],['D30','QGD','Stonewall variation',3249],['D30','QGD Slav','',3250],['D30','QGD Slav','Semmering variation',3252],['D30','QGD','Spielmann variation',3253],['D30','QGD','',3254],['D30','QGD','Capablanca variation',3258],['D30','QGD','Vienna variation',3259],['D30','QGD','Capablanca-Duras variation',3260],['D30','QGD','Hastings variation',3265],['D31','QGD','3.Nc3',3266],['D31','QGD','Janowski variation',3267],['D31','QGD','Alapin variation',3268],['D31','QGD','Charousek (Petrosian) variation',3269],['D31','QGD','semi-Slav',3270],['D31','QGD','semi-Slav, Noteboom variation',3272],['D31','QGD','semi-Slav, Koomen variation',3278],['D31','QGD','semi-Slav, Junge variation',3279],['D31','QGD','semi-Slav, Abrahams variation',3280],['D31','QGD','semi-Slav, Marshall gambit',3281],['D32','QGD','Tarrasch defence',3282],['D32','QGD','Tarrasch, von Hennig-Schara gambit',3284],['D32','QGD','Tarrasch defence, 4.cd ed',3285],['D32','QGD','Tarrasch defence, Tarrasch gambit',3289],['D32','QGD','Tarrasch defence, Marshall gambit',3290],['D32','QGD','Tarrasch defence',3291],['D33','QGD','Tarrasch, Schlechter-Rubinstein system',3293],['D33','QGD','Tarrasch, Folkestone (Swedish) variation',3294],['D33','QGD','Tarrasch, Schlechter-Rubinstein system, Rey Ardid variation',3295],['D33','QGD','Tarrasch, Prague variation',3296],['D33','QGD','Tarrasch, Wagner variation',3298],['D34','QGD','Tarrasch, Prague variation, 7...Be7',3299],['D34','QGD','Tarrasch, Prague variation, Normal position',3301],['D34','QGD','Tarrasch, Reti variation',3304],['D34','QGD','Tarrasch, Prague variation, 9.Bg5',3305],['D34','QGD','Tarrasch, Bogolyubov variation',3308],['D34','QGD','Tarrasch, Stoltz variation',3309],['D35','QGD','3...Nf6',3310],['D35','QGD','Harrwitz attack',3311],['D35','QGD','exchange variation',3312],['D35','QGD','exchange, Saemisch variation',3316],['D35','QGD','exchange, positional line',3317],['D35','QGD','exchange, chameleon variation',3327],['D35','QGD','exchange, positional line, 5...c6',3328],['D36','QGD','exchange, positional line, 6.Qc2',3329],['D37','QGD','4.Nf3',3330],['D37','QGD','classical variation (5.Bf4)',3332],['D38','QGD','Ragozin variation',3333],['D39','QGD','Ragozin, Vienna variation',3335],['D40','QGD','Semi-Tarrasch defence',3336],['D40','QGD','Semi-Tarrasch, symmetrical variation',3342],['D40','QGD','Semi-Tarrasch, Levenfish variation',3347],['D40','QGD','Semi-Tarrasch defence, Pillsbury variation',3348],['D41','QGD','Semi-Tarrasch, 5.cd',3349],['D41','QGD','Semi-Tarrasch, Kmoch variation',3361],['D41','QGD','Semi-Tarrasch, San Sebastian variation',3362],['D41','QGD','Semi-Tarrasch with e3',3363],['D42','QGD','Semi-Tarrasch, 7.Bd3',3365],['D43','QGD semi-Slav','',3366],['D43','QGD semi-Slav','Hastings variation',3371],['D44','QGD semi-Slav','5.Bg5 dc',3372],['D44','QGD semi-Slav','Botvinnik system (anti-Meran)',3373],['D44','QGD semi-Slav','Ekstrom variation',3381],['D44','QGD semi-Slav','anti-Meran gambit',3382],['D44','QGD semi-Slav','anti-Meran, Lilienthal variation',3386],['D44','QGD semi-Slav','anti-Meran, Szabo variation',3387],['D44','QGD semi-Slav','anti-Meran, Alatortsev system',3388],['D45','QGD semi-Slav','5.e3',3389],['D45','QGD semi-Slav','stonewall defence',3392],['D45','QGD semi-Slav','accelerated Meran (Alekhine variation)',3393],['D45','QGD semi-Slav','5...Nd7',3394],['D45','QGD semi-Slav','Stoltz variation',3395],['D45','QGD semi-Slav','Rubinstein (anti-Meran) system',3396],['D46','QGD semi-Slav','6.Bd3',3397],['D46','QGD semi-Slav','Bogolyubov variation',3398],['D46','QGD semi-Slav','Romih variation',3399],['D46','QGD semi-Slav','Chigorin defence',3400],['D47','QGD semi-Slav','7.Bc4',3402],['D47','QGD semi-Slav','Meran variation',3403],['D47','QGD semi-Slav','neo-Meran (Lundin variation)',3405],['D47','QGD semi-Slav','Meran, Wade variation',3406],['D48','QGD semi-Slav','Meran, 8...a6',3407],['D48','QGD semi-Slav','Meran, Pirc variation',3409],['D48','QGD semi-Slav','Meran',3410],['D48','QGD semi-Slav','Meran, Reynolds\' variation',3411],['D48','QGD semi-Slav','Meran, old main line',3412],['D49','QGD semi-Slav','Meran, Blumenfeld variation',3414],['D49','QGD semi-Slav','Meran, Rabinovich variation',3415],['D49','QGD semi-Slav','Meran, Sozin variation',3416],['D49','QGD semi-Slav','Meran, Stahlberg variation',3419],['D49','QGD semi-Slav','Meran, Sozin variation',3420],['D49','QGD semi-Slav','Meran, Rellstab attack',3424],['D50','QGD','4.Bg5',3425],['D50','QGD','Been-Koomen variation',3426],['D50','QGD','Semi-Tarrasch, Krause variation',3433],['D50','QGD','Semi-Tarrasch, Primitive Pillsbury variation',3434],['D50','QGD','Semi-Tarrasch',3435],['D50','QGD','Canal (Venice) variation',3436],['D51','QGD','4.Bg5 Nbd7',3437],['D51','QGD','Rochlin variation',3442],['D51','QGD','Alekhine variation',3443],['D51','QGD','',3444],['D51','QGD','Manhattan variation',3445],['D51','QGD','5...c6',3446],['D51','QGD','Capablanca anti-Cambridge Springs variation',3447],['D52','QGD','',3448],['D52','QGD','Cambridge Springs defence',3449],['D52','QGD','Cambridge Springs defence, Bogoljubow variation',3452],['D52','QGD','Cambridge Springs defence, Argentine variation',3454],['D52','QGD','Cambridge Springs defence, Rubinstein variation',3455],['D52','QGD','Cambridge Springs defence, Capablanca variation',3456],['D52','QGD','Cambridge Springs defence, 7.cd',3457],['D52','QGD','Cambridge Springs defence, Yugoslav variation',3458],['D53','QGD','4.Bg5 Be7',3459],['D53','QGD','Lasker variation',3461],['D53','QGD','4.Bg5 Be7, 5.e3 O-O',3462],['D54','QGD','Anti-neo-orthodox variation',3463],['D55','QGD','6.Nf3',3464],['D55','QGD','Pillsbury attack',3470],['D55','QGD','Neo-orthodox variation',3471],['D55','QGD','Neo-orthodox variation, 7.Bxf6',3472],['D55','QGD','Petrosian variation',3480],['D55','QGD','Neo-orthodox variation, 7.Bh4',3481],['D56','QGD','Lasker defence',3482],['D56','QGD','Lasker defence, Teichmann variation',3485],['D56','QGD','Lasker defence, Russian variation',3494],['D57','QGD','Lasker defence, main line',3497],['D57','QGD','Lasker defence, Bernstein variation',3500],['D58','QGD','Tartakower (Makagonov-Bondarevsky) system',3501],['D59','QGD','Tartakower (Makagonov-Bondarevsky) system, 8.cd Nxd5',3503],['D59','QGD','Tartakower variation',3509],['D60','QGD','Orthodox defence',3510],['D60','QGD','Orthodox defence, Botvinnik variation',3511],['D60','QGD','Orthodox defence, Rauzer variation',3512],['D61','QGD','Orthodox defence, Rubinstein variation',3513],['D62','QGD','Orthodox defence, 7.Qc2 c5, 8.cd (Rubinstein)',3515],['D63','QGD','Orthodox defence, 7.Rc1',3516],['D63','QGD','Orthodox defence, Pillsbury attack',3520],['D63','QGD','Orthodox defence, Capablanca variation',3521],['D63','QGD','Orthodox defence, Swiss (Henneberger) variation',3522],['D63','QGD','Orthodox defence, Swiss, Karlsbad variation',3523],['D63','QGD','Orthodox defence',3524],['D64','QGD','Orthodox defence, Rubinstein attack (with Rc1)',3525],['D64','QGD','Orthodox defence, Rubinstein attack, Wolf variation',3526],['D64','QGD','Orthodox defence, Rubinstein attack, Karlsbad variation',3527],['D64','QGD','Orthodox defence, Rubinstein attack, Gruenfeld variation',3528],['D65','QGD','Orthodox defence, Rubinstein attack, main line',3529],['D66','QGD','Orthodox defence, Bd3 line',3530],['D66','QGD','Orthodox defence, Bd3 line, fianchetto variation',3533],['D67','QGD','Orthodox defence, Bd3 line, Capablanca freeing manoevre',3534],['D67','QGD','Orthodox defence, Bd3 line, Janowski variation',3535],['D67','QGD','Orthodox defence, Bd3 line',3537],['D67','QGD','Orthodox defence, Bd3 line, Alekhine variation',3538],['D67','QGD','Orthodox defence, Bd3 line, 11.O-O',3539],['D68','QGD','Orthodox defence, classical variation',3542],['D68','QGD','Orthodox defence, classical, 13.d1b1 (Maroczy)',3543],['D68','QGD','Orthodox defence, classical, 13.d1c2 (Vidmar)',3544],['D69','QGD','Orthodox defence, classical, 13.de',3548],['E60','King\'s Indian defence','',3549],['D70','Neo-Gruenfeld defence','',3551],['E60','King\'s Indian','3.g3',3552],['D70','Neo-Gruenfeld (Kemeri) defence','',3553],['D71','Neo-Gruenfeld, 5.cd','',3557],['D72','Neo-Gruenfeld, 5.cd, main line','',3560],['D73','Neo-Gruenfeld, 5.Nf3','',3561],['D74','Neo-Gruenfeld, 6.cd Nxd5, 7.O-O','',3565],['D75','Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.Nc3','',3567],['D75','Neo-Gruenfeld, 6.cd Nxd5, 7.O-O c5, 8.dc','',3568],['D76','Neo-Gruenfeld, 6.cd Nxd5, 7.O-O Nb6','',3569],['D77','Neo-Gruenfeld, 6.O-O','',3570],['D78','Neo-Gruenfeld, 6.O-O c6','',3571],['D79','Neo-Gruenfeld, 6.O-O, main line','',3573],['E61','King\'s Indian defence, 3.Nc3','',3574],['D80','Gruenfeld defence','',3575],['D80','Gruenfeld','Spike gambit',3576],['D80','Gruenfeld','Stockholm variation',3577],['D80','Gruenfeld','Lundin variation',3582],['D81','Gruenfeld','Russian variation',3583],['D82','Gruenfeld','4.Bf4',3584],['D83','Gruenfeld','Gruenfeld gambit',3587],['D83','Gruenfeld','Gruenfeld gambit, Capablanca variation',3588],['D83','Gruenfeld','Gruenfeld gambit, Botvinnik variation',3591],['D84','Gruenfeld','Gruenfeld gambit accepted',3596],['D85','Gruenfeld','exchange variation',3598],['D85','Gruenfeld','modern exchange variation',3603],['D86','Gruenfeld','exchange, classical variation',3604],['D86','Gruenfeld','exchange, Larsen variation',3609],['D86','Gruenfeld','exchange, Simagin\'s lesser variation',3610],['D86','Gruenfeld','exchange, Simagin\'s improved variation',3611],['D87','Gruenfeld','exchange, Spassky variation',3612],['D87','Gruenfeld','exchange, Seville variation',3619],['D88','Gruenfeld','Spassky variation, main line, 10...cd, 11.cd',3621],['D89','Gruenfeld','Spassky variation, main line, 13.Bd3',3626],['D89','Gruenfeld','exchange, Sokolsky variation',3627],['D90','Gruenfeld','Three knights variation',3628],['D90','Gruenfeld','Schlechter variation',3629],['D90','Gruenfeld','Three knights variation',3630],['D90','Gruenfeld','Flohr variation',3631],['D91','Gruenfeld','5.Bg5',3632],['D92','Gruenfeld','5.Bf4',3633],['D93','Gruenfeld with Bf4    e3','',3635],['D94','Gruenfeld','5.e3',3636],['D94','Gruenfeld','Makogonov variation',3638],['D94','Gruenfeld','Opovcensky variation',3639],['D94','Gruenfeld with e3    Bd3','',3640],['D94','Gruenfeld','Smyslov defence',3643],['D94','Gruenfeld','Flohr defence',3644],['D95','Gruenfeld with e3 & Qb3','',3645],['D95','Gruenfeld','Botvinnik variation',3646],['D95','Gruenfeld','Pachman variation',3650],['D96','Gruenfeld','Russian variation',3651],['D97','Gruenfeld','Russian variation with e4',3655],['D97','Gruenfeld','Russian, Alekhine (Hungarian) variation',3656],['D97','Gruenfeld','Russian, Szabo (Boleslavsky) variation',3657],['D97','Gruenfeld','Russian, Levenfish variation',3658],['D97','Gruenfeld','Russian, Byrne (Simagin) variation',3659],['D97','Gruenfeld','Russian, Prins variation',3660],['D98','Gruenfeld','Russian, Smyslov variation',3661],['D98','Gruenfeld','Russian, Keres variation',3668],['D99','Gruenfeld defence','Smyslov, main line',3669],['D99','Gruenfeld defence','Smyslov, Yugoslav variation',3670],['E00','Queen\'s pawn game','',3671],['E00','Neo-Indian (Seirawan) attack','',3672],['E00','Catalan opening','',3673],['E01','Catalan','closed',3675],['E02','Catalan','open, 5.Qa4',3677],['E03','Catalan','open, 5.Qa4 Nbd7, 6.Qxc4',3679],['E03','Catalan','open, Alekhine variation',3681],['E04','Catalan','open, 5.Nf3',3682],['E05','Catalan','open, classical line',3683],['E06','Catalan','closed, 5.Nf3',3685],['E07','Catalan','closed, 6...Nbd7',3688],['E07','Catalan','closed, Botvinnik variation',3691],['E08','Catalan','closed, 7.Qc2',3692],['E08','Catalan','closed, Zagoryansky variation',3696],['E08','Catalan','closed, Qc2 & b3',3697],['E08','Catalan','closed, Spassky gambit',3702],['E09','Catalan','closed, main line',3703],['E09','Catalan','closed, Sokolsky variation',3708],['E10','Queen\'s pawn game','',3709],['E10','Blumenfeld counter-gambit','',3712],['E10','Blumenfeld counter-gambit accepted','',3716],['E10','Blumenfeld counter-gambit, Dus-Chotimursky variation','',3717],['E10','Blumenfeld counter-gambit, Spielmann variation','',3720],['E10','Dzindzikhashvili defence','',3721],['E10','Doery defence','',3722],['E11','Bogo-Indian defence','',3723],['E11','Bogo-Indian defence, Gruenfeld variation','',3724],['E11','Bogo-Indian defence, Nimzovich variation','',3726],['E11','Bogo-Indian defence, Monticelli trap','',3738],['E12','Queen\'s Indian defence','',3739],['E12','Queen\'s Indian','Miles variation',3740],['E12','Queen\'s Indian','Petrosian system',3741],['E12','Queen\'s Indian','4.Nc3',3742],['E12','Queen\'s Indian','4.Nc3, Botvinnik variation',3749],['E13','Queen\'s Indian','4.Nc3, main line',3750],['E14','Queen\'s Indian','4.e3',3751],['E14','Queen\'s Indian','Averbakh variation',3761],['E15','Queen\'s Indian','4.g3',3762],['E15','Queen\'s Indian','Nimzovich variation (exaggerated fianchetto)',3763],['E15','Queen\'s Indian','4.g3 Bb7',3764],['E15','Queen\'s Indian','Rubinstein variation',3769],['E15','Queen\'s Indian','Buerger variation',3770],['E16','Queen\'s Indian','Capablanca variation',3771],['E16','Queen\'s Indian','Yates variation',3773],['E16','Queen\'s Indian','Riumin variation',3774],['E17','Queen\'s Indian','5.Bg2 Be7',3775],['E17','Queen\'s Indian','anti-Queen\'s Indian system',3776],['E17','Queen\'s Indian','Opovcensky variation',3778],['E17','Queen\'s Indian','old main line, 6.O-O',3779],['E17','Queen\'s Indian','Euwe variation',3781],['E18','Queen\'s Indian','old main line, 7.Nc3',3782],['E19','Queen\'s Indian','old main line, 9.Qxc3',3786],['E20','Nimzo-Indian defence','',3788],['E20','Nimzo-Indian','Kmoch variation',3789],['E20','Nimzo-Indian','Mikenas attack',3790],['E20','Nimzo-Indian','Romanishin-Kasparov (Steiner) system',3791],['E21','Nimzo-Indian','three knights variation',3792],['E21','Nimzo-Indian','three knights, Korchnoi variation',3794],['E21','Nimzo-Indian','three knights, Euwe variation',3795],['E22','Nimzo-Indian','Spielmann variation',3796],['E23','Nimzo-Indian','Spielmann, 4...c5, 5.dc Nc6',3799],['E23','Nimzo-Indian','Spielmann, Karlsbad variation',3803],['E23','Nimzo-Indian','Spielmann, San Remo variation',3804],['E23','Nimzo-Indian','Spielmann, Staahlberg variation',3807],['E24','Nimzo-Indian','Saemisch variation',3810],['E24','Nimzo-Indian','Saemisch, Botvinnik variation',3817],['E25','Nimzo-Indian','Saemisch variation',3818],['E25','Nimzo-Indian','Saemisch, Keres variation',3820],['E25','Nimzo-Indian','Saemisch, Romanovsky variation',3821],['E26','Nimzo-Indian','Saemisch variation',3822],['E26','Nimzo-Indian','Saemisch, O\'Kelly variation',3823],['E27','Nimzo-Indian','Saemisch variation',3824],['E28','Nimzo-Indian','Saemisch variation',3825],['E29','Nimzo-Indian','Saemisch, main line',3828],['E29','Nimzo-Indian','Saemisch, Capablanca variation',3832],['E30','Nimzo-Indian','Leningrad variation',3833],['E30','Nimzo-Indian','Leningrad, ...b5 gambit',3838],['E31','Nimzo-Indian','Leningrad, main line',3839],['E32','Nimzo-Indian','classical variation',3840],['E32','Nimzo-Indian','classical, Adorjan gambit',3845],['E33','Nimzo-Indian','classical, 4...Nc6',3846],['E33','Nimzo-Indian','classical, Milner-Barry (Zurich) variation',3848],['E34','Nimzo-Indian','classical, Noa variation',3849],['E35','Nimzo-Indian','classical, Noa variation, 5.cd ed',3851],['E36','Nimzo-Indian','classical, Noa variation, 5.a3',3852],['E36','Nimzo-Indian','classical, Botvinnik variation',3855],['E36','Nimzo-Indian','classical, Noa variation, main line',3856],['E37','Nimzo-Indian','classical, Noa variation, main line, 7.Qc2',3857],['E37','Nimzo-Indian','classical, San Remo variation',3860],['E38','Nimzo-Indian','classical, 4...c5',3861],['E39','Nimzo-Indian','classical, Pirc variation',3863],['E40','Nimzo-Indian','4.e3',3864],['E40','Nimzo-Indian','4.e3, Taimanov variation',3865],['E41','Nimzo-Indian','4.e3 c5',3866],['E41','Nimzo-Indian','e3, Huebner variation',3872],['E42','Nimzo-Indian','4.e3 c5, 5.Ne2 (Rubinstein)',3873],['E43','Nimzo-Indian','Fischer variation',3874],['E44','Nimzo-Indian','Fischer variation, 5.Ne2',3875],['E45','Nimzo-Indian','4.e3, Bronstein (Byrne) variation',3876],['E46','Nimzo-Indian','4.e3 O-O',3877],['E46','Nimzo-Indian','Reshevsky variation',3878],['E46','Nimzo-Indian','Simagin variation',3881],['E47','Nimzo-Indian','4.e3 O-O, 5.Bd3',3882],['E48','Nimzo-Indian','4.e3 O-O, 5.Bd3 d5',3883],['E49','Nimzo-Indian','4.e3, Botvinnik system',3886],['E50','Nimzo-Indian','4.e3 e8g8, 5.Nf3, without ...d5',3887],['E51','Nimzo-Indian','4.e3 e8g8, 5.Nf3 d7d5',3888],['E51','Nimzo-Indian','4.e3, Ragozin variation',3892],['E52','Nimzo-Indian','4.e3, main line with ...b6',3893],['E53','Nimzo-Indian','4.e3, main line with ...c5',3894],['E53','Nimzo-Indian','4.e3, Keres variation',3896],['E53','Nimzo-Indian','4.e3, Gligoric system with 7...Nbd7',3897],['E54','Nimzo-Indian','4.e3, Gligoric system with 7...dc',3899],['E54','Nimzo-Indian','4.e3, Gligoric system, Smyslov variation',3900],['E55','Nimzo-Indian','4.e3, Gligoric system, Bronstein variation',3901],['E56','Nimzo-Indian','4.e3, main line with 7...Nc6',3902],['E57','Nimzo-Indian','4.e3, main line with 8...dc and 9...cd',3906],['E58','Nimzo-Indian','4.e3, main line with 8...Bxc3',3908],['E59','Nimzo-Indian','4.e3, main line',3910],['E60','King\'s Indian, 3.Nf3','',3911],['E60','Queen\'s pawn','Mengarini attack',3912],['E60','King\'s Indian','Anti-Gruenfeld',3913],['E60','King\'s Indian','Danube gambit',3914],['E60','King\'s Indian','3.g3, counterthrust variation',3917],['E61','King\'s Indian','Smyslov system',3921],['E62','King\'s Indian','fianchetto variation',3922],['E62','King\'s Indian','fianchetto, Larsen system',3927],['E62','King\'s Indian','fianchetto, Kavalek (Bronstein) variation',3928],['E62','King\'s Indian','fianchetto with ...Nc6',3929],['E62','King\'s Indian','fianchetto, Uhlmann (Szabo) variation',3931],['E62','King\'s Indian','fianchetto, lesser Simagin (Spassky) variation',3932],['E62','King\'s Indian','fianchetto, Simagin variation',3933],['E63','King\'s Indian','fianchetto, Panno variation',3934],['E64','King\'s Indian','fianchetto, Yugoslav system',3935],['E65','King\'s Indian','fianchetto, Yugoslav, 7.O-O',3936],['E66','King\'s Indian','fianchetto, Yugoslav Panno',3938],['E67','King\'s Indian','fianchetto with ...Nd7',3939],['E67','King\'s Indian','fianchetto, classical variation',3941],['E68','King\'s Indian','fianchetto, classical variation, 8.e4',3942],['E69','King\'s Indian','fianchetto, classical main line',3944],['E70','King\'s Indian','4.e4',3945],['E70','King\'s Indian','Kramer system',3947],['E70','King\'s Indian','accelerated Averbakh system',3948],['E71','King\'s Indian','Makagonov system (5.h3)',3949],['E72','King\'s Indian with e4 & g3','',3950],['E72','King\'s Indian','Pomar system',3954],['E73','King\'s Indian','5.Be2',3955],['E73','King\'s Indian','Semi-Averbakh system',3957],['E73','King\'s Indian','Averbakh system',3958],['E74','King\'s Indian','Averbakh, 6...c5',3959],['E75','King\'s Indian','Averbakh, main line',3961],['E76','King\'s Indian','Four pawns attack',3962],['E76','King\'s Indian','Four pawns attack, dynamic line',3966],['E77','King\'s Indian','Four pawns attack, 6.Be2',3967],['E77','King\'s Indian','Six pawns attack',3975],['E77','King\'s Indian','Four pawns attack',3976],['E77','King\'s Indian','Four pawns attack, Florentine gambit',3978],['E78','King\'s Indian','Four pawns attack, with Be2 and Nf3',3979],['E79','King\'s Indian','Four pawns attack, main line',3983],['E80','King\'s Indian','Saemisch variation',3984],['E81','King\'s Indian','Saemisch, 5...O-O',3985],['E81','King\'s Indian','Saemisch, Byrne variation',3989],['E82','King\'s Indian','Saemisch, double fianchetto variation',3990],['E83','King\'s Indian','Saemisch, 6...Nc6',3991],['E83','King\'s Indian','Saemisch, Ruban variation',3993],['E83','King\'s Indian','Saemisch, Panno formation',3994],['E84','King\'s Indian','Saemisch, Panno main line',3996],['E85','King\'s Indian','Saemisch, orthodox variation',3997],['E86','King\'s Indian','Saemisch, orthodox, 7.Nge2 c6',3999],['E87','King\'s Indian','Saemisch, orthodox, 7.d5',4000],['E87','King\'s Indian','Saemisch, orthodox, Bronstein variation',4011],['E88','King\'s Indian','Saemisch, orthodox, 7.d5 c6',4012],['E89','King\'s Indian','Saemisch, orthodox main line',4014],['E90','King\'s Indian','5.Nf3',4015],['E90','King\'s Indian','Larsen variation',4017],['E90','King\'s Indian','Zinnowitz variation',4018],['E91','King\'s Indian','6.Be2',4019],['E91','King\'s Indian','Kazakh variation',4020],['E92','King\'s Indian','classical variation',4021],['E92','King\'s Indian','Andersson variation',4022],['E92','King\'s Indian','Gligoric-Taimanov system',4023],['E92','King\'s Indian','Petrosian system',4024],['E92','King\'s Indian','Petrosian system, Stein variation',4025],['E93','King\'s Indian','Petrosian system, main line',4026],['E93','King\'s Indian','Petrosian system, Keres variation',4033],['E94','King\'s Indian','orthodox variation',4034],['E94','King\'s Indian','orthodox, Donner variation',4035],['E94','King\'s Indian','orthodox, 7...Nbd7',4036],['E95','King\'s Indian','orthodox, 7...Nbd7, 8.Re1',4037],['E96','King\'s Indian','orthodox, 7...Nbd7, main line',4040],['E97','King\'s Indian','orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)',4041],['E97','King\'s Indian','orthodox, Aronin-Taimanov, bayonet attack',4044],['E98','King\'s Indian','orthodox, Aronin-Taimanov, 9.Ne1',4045],['E99','King\'s Indian','orthodox, Aronin-Taimanov, main line',4048],['E99','King\'s Indian','orthodox, Aronin-Taimanov, Benko attack',4049]];