agreed because White cannot break through, e.g. 6.Ba4+ Kf8 7.h6 Bxf6 8.Kxf6 stalemate. Lautier vs. Rublevsky In an endgame with opposite-colored bishops, positional factors may be more important than (see quotes below). In this position, Black sacrifices a pawn (leaving him three pawns down) to reach a fortress. 1... Kf5! 2. Kxf7 Bh5+ 3. Kg7 Bd1 4. Be7 ½–½ After 4...Be2 5.Kh6 Bd1 6.h5 Black just waits by playing 6...Be2. Kotov vs. Botvinnik Another position illustrating the principle stated above is from the game Kotov–Botvinnik, Moscow 1955. Grandmaster Lev Alburt writes, "Black has an extra pawn, but his opponent appears to have a reasonable blockade in place." However, Botvinnik finds a way to create another passed pawn. 1... g5!! 2. fxg5 2.hxg5 h4 3.Bd6 Bf5 4.g6 Bxg6 5.f5 Bxf5 6.Kxb3 Kg2 costs White his bishop and the game. 2...d4+! Black must keep his b-pawn. 3. exd4 Black has gone from being a pawn up to temporarily being a pawn down, but he has a won game. If 3.Bxd4, then 3...Kg3 4.g6 Kxh4 5.Kd2 Kh3!! 6.Bf6 h4 7.Ke2 Kg2!. 3... Kg3! Not 3...Kg4? 4.d5! Bxd5 5.Bf2, drawing. 4. Ba3 4.g6 Kxh4 5.g7 Kg4 also wins. 4.Be7 Kxh4 5.g6+ Kg4 wins. 4... Kxh4 5. Kd3 Kxg5 6. Ke4 h4 7. Kf3 Or 7.d5 Bxd5+. 7... Bd5+ Fischer vs. Donner In this game between Bobby Fischer and Jan Hein Donner, White was winning, but Black had a swindle to save the game by getting to a drawn opposite-colored bishop endgame. Play continued: 30... Rxc2 31. Bxf5 Rc1 32. Qxc1 Bxc1 33. Kf1 h6 If 33.d5, then 33...Ba3 stops the pawn. 34. Ke2 Kf8 ½–½ If Fischer had won this game, he would have tied with Boris Spassky for first place in the 1966 Piatigorsky Cup tournament. Fischer vs. Polugaevsky In this position from a game between Fischer and Lev Polugaevsky a pair of rooks had just been exchanged. An endgame with opposite-colored bishops was reached, with three pawns to two, which was a dead draw. Vidmar vs. Maróczy In this 1932 game between Milan Vidmar and Géza Maróczy, White was three pawns ahead, but was unable to win. Pawns are doubled on the rook , which would give White the wrong rook pawn, making the white bishop unable to assist in promotion. The game ended in a draw on move 129, because checkmate was impossible. Before the end, two insignificant underpromotions to bishops