Author: John Merlino
Date: 11:00:14 01/31/05
Go up one level in this thread
On January 31, 2005 at 10:07:40, Mihaly Szalai wrote: >[D]8/4p3/p4kp1/8/6pP/4P1K1/P7/8 b - - 0 1 > >1... g5! >(1... Kf5 2. e4+ Kxe4 3. Kxg4 e5 4. Kg5 Kf3 5. Kxg6 e4 6. h5 e3 7. h6 >e2 8. h7 e1=Q 9. h8=Q =) >2. h5 >(2. Kxg4 gxh4 3. Kxh4 Kf5-+) >2... Kg7! 3. Kxg4 Kh6 4.e4 a5 5. a3 e6 6. a4 e5 7. Kf5 Kxh5 8. Kxe5 g4 9. Kf4 >Kh4 10. e5 g3 11. Kf3 Kh3 12. e6 g2 13. e7 g1=Q 14. e8=Q Qf1+ -+ > >Mihaly As can be seen from Fritz's and CM9_SKR's output (the former of which is in another post and the latter of which is from analysis on a P4-2.4), this position requires a search depth of about 23 or 24. The King finds g5 after 3:39, with a winning score: Time Depth Score Positions Moves 0:00 10/14 -1.10 157656 1...Kf5 2.e4+ Kxe4 3.Kxg4 e5 4.Kg5 Kd5 5.Kxg6 e4 6.h5 e3 7.h6 e2 8.h7 e1=Q 9.h8=Q Qb1+ 10.Kf7 Qxa2 0:00 11/15 -1.19 292292 1...Kf5 2.a4 e5 3.a5 Ke4 4.Kxg4 Kxe3 5.Kg5 e4 6.Kxg6 Kf4 7.h5 e3 8.h6 e2 9.h7 e1=Q 10.h8=Q Qxa5 0:00 12/16 -1.25 448974 1...Kf5 2.e4+ Kxe4 3.Kxg4 e5 4.Kg5 Kd3 5.Kxg6 e4 6.h5 e3 7.h6 e2 8.h7 e1=Q 9.h8=Q Qe4+ 10.Kf7 Qd5+ 11.Ke7 Qxa2 0:01 13/17 -1.14 679476 1...Kf5 2.e4+ Kxe4 3.Kxg4 e5 4.Kg5 Kd3 5.Kxg6 e4 6.h5 e3 7.h6 e2 8.h7 e1=Q 9.h8=Q Qg3+ 10.Kf7 Qf2+ 11.Qf6 Qxa2+ 12.Ke7 a5 0:02 14/18 -1.17 1059223 1...Kf5 2.e4+ Kxe4 3.Kxg4 e5 4.Kg5 Kf3 5.Kxg6 e4 6.h5 e3 7.h6 e2 8.h7 e1=Q 9.h8=Q Qb1+ 10.Kg5 Qc1+ 11.Kf5 Qc2+ 12.Kg5 Qg2+ 13.Kf5 Qxa2 0:04 15/19 -1.02 1738307 1...Kf5 2.e4+ Kxe4 3.Kxg4 e5 4.Kg5 Kf3 5.Kxg6 e4 6.h5 e3 7.h6 e2 8.h7 e1=Q 9.h8=Q Qb1+ 10.Kg5 Qb5+ 11.Kg6 Qd3+ 12.Kf7 Qc4+ 13.Ke7 Qe2+ 14.Kd6 Qd2+ 15.Ke7 Qxa2 0:08 16/20 -0.99 3032791 1...Kf5 2.e4+ Kxe4 3.Kxg4 e5 4.Kg5 Kd5 5.Kxg6 e4 6.h5 e3 7.h6 e2 8.h7 e1=Q 9.h8=Q Qb1+ 10.Kg5 Qg1+ 11.Kf5 Qf2+ 12.Kg5 Qg2+ 13.Kf5 Qc2+ 14.Kg5 Qd2+ 15.Kf5 Qxa2 0:18 17/21 -0.95 6086657 1...Kf5 2.e4+ Kxe4 3.Kxg4 e5 4.Kg5 Kd3 5.Kxg6 e4 6.h5 e3 7.h6 e2 8.h7 e1=Q 9.h8=Q Qe4+ 10.Kf7 Qd5+ 11.Ke7 Qxa2 12.Qh3+ Kd4 13.Qg4+ Kc5 14.Qg1+ Kb5 15.Qg5+ Ka4 16.Qe5 0:32 18/22 -0.98 10036257 1...Kf5 2.e4+ Kxe4 3.Kxg4 e5 4.Kg5 Kd3 5.Kxg6 e4 6.h5 e3 7.h6 e2 8.h7 e1=Q 9.h8=Q Qe4+ 10.Kf7 Qd5+ 11.Ke7 Qb7+ 12.Ke6 Qc6+ 13.Kf7 Qc4+ 14.Kg6 Qxa2 15.Qd8+ Kc2 16.Qc7+ Kb3 17.Qe5 1:14 19/23 -0.82 21749168 1...Kf5 2.e4+ Kxe4 3.Kxg4 e5 4.Kg5 Kd3 5.Kxg6 e4 6.h5 e3 7.h6 e2 8.h7 e1=Q 9.h8=Q Qe4+ 10.Kf7 Qd5+ 11.Ke7 Qxa2 12.Qh3+ Kd4 13.Qg4+ Kc5 14.Qc8+ Kb4 15.Qb8+ Ka4 16.Qf4+ Kb5 17.Qe5+ Kb6 18.Kd7 2:52 20/24 -0.74 48552512 1...Kf5 2.e4+ Kxe4 3.Kxg4 e5 4.Kg5 Kf3 5.Kxg6 e4 6.h5 e3 7.h6 e2 8.h7 e1=Q 9.h8=Q Qb1+ 10.Kg5 Qxa2 11.Qh3+ Ke4 12.Qg4+ Kd3 13.Qf5+ Kd4 14.Qf4+ Kc5 15.Qc7+ Kb5 16.Qe5+ Kc6 17.Qf6+ Kb7 18.Qe7+ Kb6 19.Qd6+ Ka5 3:39 20/24 -2.97 64746899 1...g5 2.Kxg4 gxh4 3.Kxh4 Kf5 4.Kg3 Ke4 5.Kf2 Kd3 6.Kf3 Kc3 7.Ke2 a5 8.a4 Kb4 9.Kd1 Kxa4 10.Kc2 Ka3 11.Kb1 a4 12.e4 Kb3 13.e5 a3 jm
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