Author: Jaime Benito de Valle Ruiz
Date: 04:08:04 09/30/03
Go up one level in this thread
I tried some of the winning lines suggested in previous threads against Fritz 8
and Shredder 7.04 giving them 5 minutes/move, and none of them can do anything
to avoid loosing with white. Of course, for a weak player like me, winning
without help is very hard, but it can be done.
Engines seem to have problems, not only with the first move, but with some
others later on. Eg: After 6.Ke1, Shredder needs more than 9:36 to find Qe3+,
which seems to be the winning move, or at least it leads to an easy victory.
After 10.Bf3, it needs 4:31 to find Qe4.
1... Rxc3! 2. fxe6
[2. bxc3 Rc8! 3. fxe6
(3. Rc1 Qb6+ 4. Bb5 Bd7 5. a4 Bxb5 6. axb5 Qxb5+ 7. Kc2 Qa4+
8. Kd3 Bg5 9. Ke2 Qa2+ 10. Kf3 Bxc1 11. Rxc1 Qd2 -+)
(3. Rd3 Rc6 4. a4 Qxa4 5. Rd2 g6! 6. fxg6 Bg5 -+)
3... Qxc3 4. exf7+ Kf8 5.Qe2 Bxd4 6. Qe8+ Rxe8 7. fxe8=Q+ Kxe8
8. Rxd4 Qxd4 -+]
2... Ra3! 3. bxa3
[3.e7 Re8 4. bxa3 Qb6+ 5. Kc2 Rc8+ 6. Kd2 Bxd4! -+]
3... Qb6+ 4. Kc2 Rc8+ 5. Kd2 Qxd4+ 6. Ke1 Qe3+ 7. Be2 fxe6 8. Qh3
[8. Kf1 Bd4 9. Rxd4 Qxd4 10. g3 Rf8+ 11. Bf3 Qd2 12. h3 Rf5 13. Qg4 h5 -+]
8... Bc3+ 9. Kf1 Rf8+ 10. Bf3 Qe4! 11.Qg3
[11. a4 Bb4! 12. Qh5
(12. Kf2 Bc5+ 13. Kf1 Qc4+ 14. Ke1 Bb4+ 15. Kf2 Qxa2+ -+)
12... g6! 13. Qh3 Qc4+ 14. Kf2 Qc2+ 15. Kg3 Bd6+ 16. Kh4 Rf4+
17.g4 g5+ 18. Kh5 Kg7 {and Black forces mate}]
11... Qc4+ 12. Kf2 Bd4+ 13. Rxd4
[13. Ke1 Qc3+ 14. Kf1 e5 15. Rxd4 Qxd4 16. Qf2 Qc4+ 17. Qe2 e4 -+]
13... Qxd4+ 14. Ke2 Qb2+ 15. Ke1 e5! 16. Bxd5+ Kh8 17. Qd3 Qc1+ 18. Qd1 Qxd1+
[{More complex is} 18... Qc5 19. Qd3 Rd8 20. Rf1 Rxd5 21. Rf8+ Qxf8
22. Qxd5 -+]
19. Kxd1 Rd8 -+ {Black should win the endgame.}
Regards,
Jaime
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