[Event "K+R+3P vs K+R+4P"] [Site "www.masterchessopen.com"] [Date "1925.01.01"] [Round "0"] [White "Lasker"] [Black "Levenfish"] [Result "0-1"] [EventType "game"] [EventCountry "RUS"] [FEN "8/r4pK1/2k1p1p1/p3P3/R4P1P/8/8/8 w - - 0 1"] { Any loss of tempo in creating counterplay can be fatal. Here is a classical example. } 1.Kf6? { White's only chance is to create a passed pawn. This could have been achieved by 1.f5!! exf5 2.e6! fxe6 3.Kxg6 and despite his two extra pawns, Black cannot win, e.g. 3...Kb5 4.Ra1 f4 5.h5 e5 (also 5...f3 6. Rf1! a4 7.Rxf3 a3 8.Rf1 a2 9.Ra1 Kc4 10.h6 Kb3 11.h7 Ra8 12.Re1! leads to a draw) 6.Re1 Kc4 7.Rxe5 Kd3 8.h6 f3 9.h7 Rxh7 10.Kxh7 f2 11.Rf5 Ke3 12.Rf8 a4 13.Re8+ etc. Lasker uses this idea two moves later, but then without the desired effect. } (1.f5!! exf5 2.e6! fxe6+ 3.Kxg6 Kb5 4.Ra1 f4 5.h5 e5 (5...f3 6.Rf1 a4 7.Rxf3 a3 8.Rf1 a2 9.Ra1 Kc4 10.h6 Kb3 11.h7 Ra8 12.Re1 $11) 6.Re1 Kc4 7.Rxe5 Kd3 8.h6 f3 9.h7 Rxh7 10.Kxh7 f2 11.Rf5 Ke3 12.Rf8 a4 13.Re8+) 1...Kb5 2.Ra1 a4 3.f5 exf5 4.e6 fxe6 5.Kxg6 f4! 6.h5 f3! 7.h6 e5! 8.Re1! a3 9.Rxe5+ Kc4 10.Re1 a2 11.h7 Ra8! { If 11... Rxh7 12.Kxh7 f2 13.Rf1 Kd3 14.Ra1! the position is a theoretical draw. } (11...Rxh7 12.Kxh7 f2 13.Rf1 Kd3 14.Ra1 $11) 12.Kg7 f2 13.Ra1 Kb3 14.Rf1 a1=Q+ 15.Rxa1 Rxa1 16.h8=Q Rg1+ {#R} 0-1