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Subject: instant mate-in 16

Author: Mike Byrne

Date: 19:02:40 04/14/05


this one is neat because it also means that the new edition of Crafty PPC in
CEBoard will also see mate in about 15 seconds or so.

Black(1): [d]4r1r1/bB4p1/8/2p1kPKn/n7/3R4/3P4/2B5 w -
White(1):
White(1): g
crafty is behind  1.5 on time, reducing by 1/3.
              time surplus   0.00  time limit 1000:00 (1000:00)
              depth   time  score   variation (1)
                6     0.04   0.01   1. Rd5+ Ke4 2. Rd8+ Ke5 3. Rd5+
                6->   0.05   0.01   1. Rd5+ Ke4 2. Rd8+ Ke5 3. Rd5+
                7     0.10     +1   1. Rd5+!!
                7     0.11     +3   1. Rd5+!!
                7     0.11     +M   1. Rd5+!!
                7     0.14  Mat16   1. Rd5+ Ke4 2. Rd7+ Ke5 3. Ba3 c4 4.
                                    Bd6+ Kd4 5. Bf8+ Ke5 6. Rd5+ Ke4 7.
                                    Rd8+ Ke5 8. Rxe8+ Kd4 9. Rd8+ Ke5 10.
                                    Rd5+ Ke4 11. Rd7+ Ke5 12. Bd6+ Kd4
                                    13. Bb4+ Ke5 14. d4+ cxd3 15. Re7+
                                    Kd4 16. Re4#
                7->   0.18  Mat16   1. Rd5+ Ke4 2. Rd7+ Ke5 3. Ba3 c4 4.
                                    Bd6+ Kd4 5. Bf8+ Ke5 6. Rd5+ Ke4 7.
                                    Rd8+ Ke5 8. Rxe8+ Kd4 9. Rd8+ Ke5 10.
                                    Rd5+ Ke4 11. Rd7+ Ke5 12. Bd6+ Kd4
                                    13. Bb4+ Ke5 14. d4+ cxd3 15. Re7+
                                    Kd4 16. Re4#
                8     0.29  Mat16   1. Rd5+ Ke4 2. Rd7+ Ke5 3. Ba3 c4 4.
                                    Bd6+ Kd4 5. Bf8+ Ke5 6. Rd5+ Ke4 7.
                                    Rd8+ Ke5 8. Rxe8+ Kd4 9. Rd8+ Ke5 10.
                                    Rd5+ Ke4 11. Rd7+ Ke5 12. Bd6+ Kd4
                                    13. Bb4+ Ke5 14. d4+ cxd3 15. Re7+
                                    Kd4 16. Re4#
                8->   0.30  Mat16   1. Rd5+ Ke4 2. Rd7+ Ke5 3. Ba3 c4 4.
                                    Bd6+ Kd4 5. Bf8+ Ke5 6. Rd5+ Ke4 7.
                                    Rd8+ Ke5 8. Rxe8+ Kd4 9. Rd8+ Ke5 10.
                                    Rd5+ Ke4 11. Rd7+ Ke5 12. Bd6+ Kd4
                                    13. Bb4+ Ke5 14. d4+ cxd3 15. Re7+
                                    Kd4 16. Re4#
                9     0.52  Mat16   1. Rd5+ Ke4 2. Rd7+ Ke5 3. Ba3 c4 4.
                                    Bd6+ Kd4 5. Bf8+ Ke5 6. Rd5+ Ke4 7.
                                    Rd8+ Ke5 8. Rxe8+ Kd4 9. Rd8+ Ke5 10.
                                    Rd5+ Ke4 11. Rd7+ Ke5 12. Bd6+ Kd4
                                    13. Bb4+ Ke5 14. d4+ cxd3 15. Re7+
                                    Kd4 16. Re4#
                9->   0.58  Mat16   1. Rd5+ Ke4 2. Rd7+ Ke5 3. Ba3 c4 4.
                                    Bd6+ Kd4 5. Bf8+ Ke5 6. Rd5+ Ke4 7.
                                    Rd8+ Ke5 8. Rxe8+ Kd4 9. Rd8+ Ke5 10.
                                    Rd5+ Ke4 11. Rd7+ Ke5 12. Bd6+ Kd4
                                    13. Bb4+ Ke5 14. d4+ cxd3 15. Re7+
                                    Kd4 16. Re4#
               10     1.05  Mat16   1. Rd5+ Ke4 2. Rd7+ Ke5 3. Ba3 c4 4.
                                    Bd6+ Kd4 5. Bf8+ Ke5 6. Rd5+ Ke4 7.
                                    Rd8+ Ke5 8. Rxe8+ Kd4 9. Rd8+ Ke5 10.
                                    Rd5+ Ke4 11. Rd7+ Ke5 12. Bd6+ Kd4
                                    13. Bb4+ Ke5 14. d4+ cxd3 15. Re7+
                                    Kd4 16. Re4#
               10->   1.10  Mat16   1. Rd5+ Ke4 2. Rd7+ Ke5 3. Ba3 c4 4.
                                    Bd6+ Kd4 5. Bf8+ Ke5 6. Rd5+ Ke4 7.
                                    Rd8+ Ke5 8. Rxe8+ Kd4 9. Rd8+ Ke5 10.
                                    Rd5+ Ke4 11. Rd7+ Ke5 12. Bd6+ Kd4
                                    13. Bb4+ Ke5 14. d4+ cxd3 15. Re7+
                                    Kd4 16. Re4#
               11     2.11  Mat16   1. Rd5+ Ke4 2. Rd7+ Ke5 3. Ba3 c4 4.
                                    Bd6+ Kd4 5. Bf8+ Ke5 6. Rd5+ Ke4 7.
                                    Rd8+ Ke5 8. Rxe8+ Kd4 9. Rd8+ Ke5 10.
                                    Rd5+ Ke4 11. Rd7+ Ke5 12. Bd6+ Kd4
                                    13. Bb4+ Ke5 14. d4+ cxd3 15. Re7+
                                    Kd4 16. Re4#
               11->   2.19  Mat16   1. Rd5+ Ke4 2. Rd7+ Ke5 3. Ba3 c4 4.
                                    Bd6+ Kd4 5. Bf8+ Ke5 6. Rd5+ Ke4 7.
                                    Rd8+ Ke5 8. Rxe8+ Kd4 9. Rd8+ Ke5 10.
                                    Rd5+ Ke4 11. Rd7+ Ke5 12. Bd6+ Kd4
                                    13. Bb4+ Ke5 14. d4+ cxd3 15. Re7+
                                    Kd4 16. Re4#
?              12     2.19   1/28*  1. Rd5+
White(1): ?
              time=3.64  cpu=183%  mat=-8  n=17585175  fh=99%  nps=4.83M
              ext-> chk=1045745 cap=24141 pp=46319 1rep=42454 mate=5671
              predicted=0  nodes=17585175  evals=25477  50move=0
              endgame tablebase-> probes=0  hits=0
              SMP->  split=820  stop=24  data=7/64  cpu=6.68  elap=3.64

mate in 16 moves.


White(1): Rd5+
              time used:   3.64



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Last modified: Thu, 15 Apr 21 08:11:13 -0700

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