Author: Mike Byrne
Date: 18:55:07 03/25/05
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On March 25, 2005 at 21:54:23, Mike Byrne wrote: >This position has long fascinated me and there are a few programs (perhaps even >more than a few ) that solved this mate-in-30. > > >The next version of modfied Crafty SE will also solve this neat position >quickly. Although I am not sure if it will play better chess. The secret here >is that there is 29 checks in a row follwed by mate. > >Black(1): [d]5n2/B3K3/2p2Np1/4k3/7P/3bN1P1/2Prn1P1/1q6 w - >White(1): g > time surplus 29.92 time limit 10:00 (10:00) > depth time score variation (1) > 6-> 0.03 4.25 1. Neg4+ Kf5 2. Nh6+ Ke5 3. Nf7+ Kf5 > 4. Nd6+ Ke5 5. Ng4+ Kd5 6. c4+ Bxc4 > 7. Ne3+ Ke5 8. Ndxc4+ Ke4 9. Nxd2+ > Ke5 10. Nxb1 Ne6 11. Bb8+ Kd4 12. Kxe6 > Kxe3 (s=2) > 7 0.07 4.48 1. Neg4+ Kf5 2. Nh6+ Ke5 3. Nf7+ Kf5 > 4. Nd6+ Ke5 5. Ng4+ Kd5 6. c4+ Bxc4 > 7. Ne3+ Ke5 8. Ndxc4+ Ke4 9. Nxd2+ > Kd3 10. Nxb1 Nd4 11. Bxd4 Kxd4 > 7-> 0.08 4.48 1. Neg4+ Kf5 2. Nh6+ Ke5 3. Nf7+ Kf5 > 4. Nd6+ Ke5 5. Ng4+ Kd5 6. c4+ Bxc4 > 7. Ne3+ Ke5 8. Ndxc4+ Ke4 9. Nxd2+ > Kd3 10. Nxb1 Nd4 11. Bxd4 Kxd4 (s=2) > 8 0.13 +1 1. Neg4+!! > 8 0.13 +3 1. Neg4+!! > 8 0.13 +M 1. Neg4+!! > 8 0.18 Mat30 1. Neg4+ Kf5 2. Nh6+ Ke5 3. Nf7+ Kf5 > 4. Nd6+ Ke5 5. Ng4+ Kd5 6. Ne3+ Ke5 > 7. Nf7+ Ke4 8. Ng5+ Ke5 9. Nf3+ Ke4 > 10. Nxd2+ Ke5 11. Nf3+ Ke4 12. Ng5+ > Ke5 13. Nf7+ Ke4 14. Nd6+ Ke5 15. Ng4+ > Kd5 16. Nf6+ Ke5 17. Nf7+ Kf5 18. Nh6+ > Ke5 19. Nhg4+ Kf5 20. Ne3+ Ke5 21. > Nfg4+ Ke4 22. Nf2+ Ke5 23. Nxd3+ Ke4 > 24. Nf2+ Ke5 25. Nfg4+ Ke4 26. Nf6+ > Ke5 27. Nc4+ Kf5 28. Nd6+ Ke5 29. Ng4+ > Kd5 30. c4# > 8-> 0.22 Mat30 1. Neg4+ Kf5 2. Nh6+ Ke5 3. Nf7+ Kf5 > 4. Nd6+ Ke5 5. Ng4+ Kd5 6. Ne3+ Ke5 > 7. Nf7+ Ke4 8. Ng5+ Ke5 9. Nf3+ Ke4 > 10. Nxd2+ Ke5 11. Nf3+ Ke4 12. Ng5+ > Ke5 13. Nf7+ Ke4 14. Nd6+ Ke5 15. Ng4+ > Kd5 16. Nf6+ Ke5 17. Nf7+ Kf5 18. Nh6+ > Ke5 19. Nhg4+ Kf5 20. Ne3+ Ke5 21. > Nfg4+ Ke4 22. Nf2+ Ke5 23. Nxd3+ Ke4 > 24. Nf2+ Ke5 25. Nfg4+ Ke4 26. Nf6+ > Ke5 27. Nc4+ Kf5 28. Nd6+ Ke5 29. Ng4+ > Kd5 30. c4# (s=2) > time=0.22 cpu=186% mat=-12 n=1016534 fh=98% nps=4.62M > ext-> chk=75747 cap=374 pp=0 1rep=18024 mate=270 > predicted=0 nodes=1016534 evals=5848 50move=0 > endgame tablebase-> probes=0 hits=0 > SMP-> split=567 stop=16 data=7/64 cpu=0.41 elap=0.22 > >mate in 30 moves. > > >White(1): Neg4+ > time used: 0.22 >Black(1): > >I will check the archives for more longer mates - if you have one please post.
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