White Elo Black Elo ECO Year Res. #       Siff, Boris Cotton, Donald R C14 1974 1-0 40 Siff, Boris Mar, Craig E24 1977 1-0 43 Siff, Boris Thinnsen, James A 2220 D73 1981 1-0 49 Page 1
Siff, Boris - Cotton, Donald R - American op 10th (1), Santa Monica, 1974 C14 1.d4 e6 2.Nc3 d5 3.e4 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 c5 7.Bxe7 Kxe7 8.Qh5 Kf8 9.O-O-O cxd4 10.Nb5 Nc6 11.f4 f6 12.Nxd4 Nxd4 13.Rxd4 Qa5 14.Nf3 Qxa2 15.f5 Nxe5 16.Nxe5 fxe5 17.fxe6 Bxe6 18.Qxe5 Re8 19.Bc4 Qa1+ 20.Kd2 Qxh1 21.Rf4+ Bf7 22.Rxf7+ Kxf7 23.Bxd5+ Kf8 24.Qf4+ Ke7 25.Qc7+ Kf6 26.Qd6+ Kf5 27.Qd7+ Kf4 28.g3+ Kxg3 29.Qxg7+ Kh2 30.Qc7+ Kh3 31.Bxh1 Rd8+ 32.Ke3 Rd1 33.Qxb7 Re8+ 34.Be4 Re1+ 35.Kd3 R8xe4 36.Qxe4 Rxe4 37.Kxe4 Kxh4 38.Kf4 h5 39.c4 Kh3 40.c5 h4 1-0	Search games Games: 10649461 / Last update: 16 Jul 2025 GamePositionEndgames White Black Ignore colours ECO Year Result All 1-0 0-1 ½-½ Event Site Click below to set up a position to search for Set position Click the button below to select an endgame type
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