There is a unique point to this study, one that has made it famous in problem circles – and one that you are most unlikely to encounter anywhere else. White draws by expoiting the 50-move-rule! This states that that a player can claim a draw if no capture has been made and no pawn has been moved in the last fifty consecutive moves (fifty moves by each side).
1.f6! Qb3 2.f7! White must be careful: If he plays 2.Kh6? the drawing idea of the main line fails by one move. 2...Qd1 3.f7 Qf3 4.Kg7 Qg4+ 5.Kh8 Qf5 6.Kg7 Qg5+ 7.Kh7 Qf6 8.Kg8 Qg6+ 9.Kf8 Ka4 10.Ke7 Qg7 11.Ke8 Qe5+ 12.Kd7 Qf6 13.Ke8 Qe6+ 14.Kf8 Kb3 15.Kg7 Qe7 16.Kg8 Qg5+ 17.Kh8 Qf6+ 18.Kg8 Qg6+ 19.Kf8 Kb2 20.Ke7 Qg7 21.Ke8 Qe5+ 22.Kd8 Qf6+ 23.Ke8 Qe6+ 24.Kf8 Kc1 25.Kg7 Qe7 26.Kg8 Qg5+ 27.Kh8 Qf6+ 28.Kg8 Qg6+ 29.Kf8 Kd1 30.Ke7 Qg7 31.Ke8 Qe5+ 32.Kd7 Qf6 33.Ke8 Qe6+ 34.Kf8 Ke2 35.Kg7 Qe7 36.Kg8 Qg5+ 37.Kh8 Qf6+ 38.Kg8 Qg6+ 39.Kf8 Kf3 40.Ke7 Qg7 41.Ke8 Qe5+ 42.Kd7 Qf6 43.Ke8 Qe6+ 44.Kf8 Kf4 45.Kg7 Qe7 46.Kg8 Qg5+ 47.Kh7 Qf6 48.Kg8 Qg6+ 49.Kf8 Ke5 50.Ke7 Qg7 51.Ke8 Ke6 52.Kd8 Qxf7 and Black has made a capture just in time to avoid a 50-move draw.
2...Qd1+ 3.Kh6! Qf3 4.Kg7 Qg4+ 5.Kh8 Qf5 6.Kg7 Qg5+ 7.Kh7 Qf6 8.Kg8 Qg6+ 9.Kf8 [9.Kh8? Qxf7 10.Nc2 dxc2] 9...Ka4! 10.Ke7! Qg7 11.Ke8 Qe5+ 12.Kd7 Qf6 13.Ke8 Qe6+ 14.Kf8 Kb3 15.Kg7 Qe7 16.Kg8 Qg5+ 17.Kh8 Qf6+ 18.Kg8 Qg6+ 19.Kf8 Kb2 20.Ke7 Qg7 21.Ke8 Qe5+ 22.Kd8 Qf6+ 23.Ke8 Qe6+ 24.Kf8 Kc1 25.Kg7 Qe7 26.Kg8 Qg5+ 27.Kh8 Qh6+ 28.Kg8 Qg6+ 29.Kf8 Kd1 30.Ke7 Qg7 31.Ke8 Qe5+ 32.Kd7 Qf6 33.Ke8 Qe6+ 34.Kf8 Ke2 35.Kg7 Qe7 36.Kg8 Qg5+ 37.Kh8 Qf6+ 38.Kg8 Qg6+ 39.Kf8 Kf3 40.Ke7 Qg7 41.Ke8 Qe5+ 42.Kd7 Qf6 43.Ke8 Qe6+ 44.Kf8 Kf4 45.Kg7 Qe7 [45...Qd7 46.Kf6!] 46.Kg8 Qg5+ 47.Kh7 Qf6 48.Kg8 Qg6+ 49.Kf8 Ke5 50.Ke7! Qg7 [50...Qe6+ 51.Kf8 Kf6 52.Kg8=; or 50...Qd6+ 51.Ke8 Ke6 52.Nc2!=] 51.Ke8 Ke6 52.Kd8! With this move, White can claim the draw by the fifty-move rule since move two no piece has been captured and no pawn moved. Incidentally 52.Nc2 is also a draw by the 50 move rule.
Now who of you got had thought so much :)
No comments:
Post a Comment