Author: John Merlino
Date: 10:51:05 06/07/01
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On June 07, 2001 at 10:41:29, leonid wrote: >Hi! > >This position is not that difficult, not even deep. Only reason for saying that >it is for "good program" is the few other positions, very close to this, were >solved only by Heiner mate solver. > >[D]qQrq4/BPNB4/nqqQ4/kqbbNRRK/nqqQ4/PqPP4/qQrQ4/8 w - - > >Please indicate your result. > >Thanks, >Leonid. Well, CM8000 announces Mate in 10 in just under 5 minutes on my PIII-600, but I would be surprised if that was the optimal solution: Time Depth Score Positions Moves 0:03 1/3 1.54 155615 1. axb4+ Q5xb4 2. cxb4+ Qcxb4 3. Q4xb4+ Q6xb4 4. Nxc6+ Bxc6 5. Qxb4+ Nxb4 6. bxc8=Q Qxb8 7. Bxb8 0:14 1/4 3.03 746627 1. axb4+ Qcxb4 2. Qxb4+ Q3xb4 3. cxb4+ Bxb4 4. Nxc6+ Q6xc6 5. bxa8=Q Qxb2 6. Qaxc6 Qxc6 7. Bxc6 Rxc6 0:55 2/5 8.32 2961826 1. axb4+ Qcxb4 2. Bxb6+ Nxb6 3. cxb4+ Ka4 4. bxc5+ Nc4 5. Nxc6 Qh8+ 6. Qxh8 Rxh8+ 7. Q2xh8 Qaxb7 4:51 2/6 Mate10 16644571 1. axb4+ Qcxb4 2. Qxb4+ Bxb4 3. cxb4+ Q5xb4 4. Nxc6+ Qxc6 5. Q2xb4+ Qxb4 6. Qbxb4+ Nxb4 7. Bb6+ Qxb6 8. bxa8=Q+ Na6 9. Qbxb6+ Nxb6 10. Qxa6#
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