7) . ? White to play Petrosian vs H Ree, 1971  (A29) English, Four Knights, Kingside Fianchetto, 8 moves, 1-0 44) . . . . . . black to play Ahues vs Sultan Khan, 1930  (E43) Nimzo-Indian, Fischer Variation, 46 moves, 0-1 if 2 pieces . . . . Korchnoi vs Levenfish, 1953  (E07) Catalan, Closed, 26 moves, 0-1 K Aseev vs V Nevostrujev, 2002  (E91) King's Indian, 33 moves, 0-1 21) white to move Z Varga vs R Hartoch, 2001  (A42) Modern Defense, Averbakh System, 21 moves, 1-0 30) J Dueball vs E Gereben, 1972  (C97) Ruy Lopez, Closed, Chigorin, 33 moves, 1-0 17) . . . . black to move Sadler vs Pelletier, 2003  (E56) Nimzo-Indian, 4.e3, Main line with 7...Nc6, 18 moves, 0-1 28) White to move Timman vs S Tatai, 1977  (C51) Evans Gambit, 28 moves, 1-0 29) . . . . . black to move Z Kozul vs Eljanov, 2005  (E12) Queen's Indian, 36 moves, 0-1 18) White to move E Delmar vs NN, 1898  (D35) Queen's Gambit Declined, 20 moves, 1-0 27) . . . . don't mate the king , mate the . . . . black to A Horvath vs V Erdos, 2008  (C80) Ruy Lopez, Open, 28 moves, 0-1 29) . . . Black to move C Holt vs M Panchanathan, 2011  (E32) Nimzo-Indian, Classical, 33 moves, 0-1 16) White to move Denker vs H Avram, 1939  (C55) Two Knights Defense, 19 moves, 1-0 21) White to play Fischer vs W Beach, 1963  (B06) Robatsch, 24 moves, 1-0 51) White to move V Laznicka vs Negi, 2011  (D45) Queen's Gambit Declined Semi-Slav, 53 moves, 1-0 26) . . . Black to play I Jones vs J Dueball, 1974  (E68) King's Indian, Fianchetto, Classical Variation, 8.e4, 29 moves, 0-1 35) White to move D Leroy vs I Snape, 2009  (D70) Neo-Grunfeld Defense, 41 moves, 1-0 27) . . . . Black to move. Stahlberg vs Keres, 1936  (E26) Nimzo-Indian, Samisch, 27 moves, 0-1 14) White to move Alekhine vs R L Bornholz, 1929  (D12) Queen's Gambit Declined Slav, 16 moves, 1-0 19) White to move Botvinnik vs G Stepanov, 1930  (D52) Queen's Gambit Declined, 34 moves, 1-0 34) White to play Vidmar vs Euwe, 1929  (A48) King's Indian, 37 moves, 1-0 23) . . . . black to play D Flynn vs F Scheckenbach, 2012  (B22) Sicilian, Alapin, 26 moves, 0-1 26) White to move Suba vs L M Garcia Lopez, 1994  (A97) Dutch, Ilyin-Genevsky, 27 moves, 1-0 23) White to play P Moran vs E Franco, 1955  (B64) Sicilian, Richter-Rauzer Attack, 24 moves, 1-0 14) . . . . Black to play F Lida Garcia vs Y Shulman, 2003  (A01) Nimzovich-Larsen Attack, 16 moves, 0-1 29) . . . black to move I Theodorovich vs H Ridout, 1976  (A04) Reti Opening, 33 moves, 0-1 26) White to move D Shevelev vs Bagirov, 1997  (C05) French, Tarrasch, 30 moves, 1-0 44) White to play Xie Jun vs N Ioseliani, 1997  (B32) Sicilian, 48 moves, 1-0 47) White to move N Johansson vs R Rey Ardid, 1933  (C98) Ruy Lopez, Closed, Chigorin, 47 moves, 1-0