Author: Mike Hood
Date: 20:46:55 04/04/05
Go up one level in this thread
You say that Junior 8 doesn't find the position with or without tablebases, but it's a simple 5-piece position, so I assume you only have 4-piece tablebases installed. Add an extra pawn to make it: [D]k7/2K5/5p2/2N2p2/5N2/8/8/8 w - - 0 1 And what does Junior 9 say about this position, examining all 22 lines? Analysis by Junior 9: 1. = (0.00): 1.Ncd3 2. = (0.00): 1.Kb6 3. = (0.00): 1.Nb7 4. = (0.00): 1.Nb3 5. = (0.00): 1.Nd7 6. = (0.00): 1.Ne4 7. = (0.00): 1.Na6 8. = (0.00): 1.Na4 9. = (0.00): 1.Nce6 10. = (0.00): 1.Ng2 11. = (0.00): 1.Nfe6 12. = (0.00): 1.Ne2 13. = (0.00): 1.Ng6 14. = (0.00): 1.Nh3 15. = (0.00): 1.Nd5 16. = (0.00): 1.Nfd3 17. = (0.00): 1.Nh5 18. = (0.00): 1.Kd6 19. = (0.00): 1.Kd8 20. = (0.00): 1.Kc6 21. = (0.00): 1.Kc8 22. = (0.00): 1.Kd7 The previous versions of Junior (5, 6, 7 and 8) all give the same analysis. Every other engine in my possession does a better job, for instance Shredder 9: Analysis by Shredder 9: 1. +- (#5): 1.Nd5 Ka7 2.Ne7 Ka8 3.Nc6 f4 4.Nd7 f3 5.Nb6# 2. +- (#5): 1.Nfd3 f4 2.Nb4 f5 3.Nc6 f3 4.Nd7 f2 5.Nb6# 3. +- (#5): 1.Ne2 f4 2.Nd4 f3 3.Nc6 f5 4.Nd7 f2 5.Nb6# 4. +- (#5): 1.Nfe6 f4 2.Nd4 f3 3.Nc6 f5 4.Nd7 f2 5.Nb6# 5. +- (#5): 1.Ng6 f4 2.Ne7 f3 3.Nc6 f5 4.Nd7 f2 5.Nb6# 6. +- (#7): 1.Nh5 Ka7 2.Nxf6 7. +- (#7): 1.Na6 Ka7 2.Nb8 Ka8 3.Nd5 Ka7 4.Nb6 f4 5.Nc8+ Ka8 6.Nd7 8. +- (#7): 1.Nd7 Ka7 2.Nb8 Ka8 3.Nd5 Ka7 4.Nb6 f4 5.Nc8+ Ka8 6.Nd7 9. +- (#7): 1.Kc8 Ka7 2.Nd5 Ka8 3.Kc7 Ka7 4.Ne7 Ka8 5.Nc6 f4 6.Nd7 f3 7.Nb6# 10. +- (#7): 1.Nh3 Ka7 2.Ng1 f4 3.Ne2 f5 4.Nd4 f3 5.Nb5+ Ka8 6.Nd7 f4 7.Nb6# 11. +- (#7): 1.Ncd3 Ka7 2.Nb4 Ka8 3.Nfd5 Ka7 4.Nb6 f4 5.Nc8+ Ka8 6.Nc6 f3 7.Nb6# 12. +- (#7): 1.Kd8 Kb8 2.Nd5 f4 3.Ne7 f3 4.Nc6+ Ka8 5.Kc7 f5 6.Nd7 f2 7.Nb6# 13. +- (#7): 1.Kd7 Ka7 2.Nd5 f4 3.Kc7 14. +- (#7): 1.Ng2 Ka7 2.Nh4 f4 3.Nf5 f3 4.Ne7 f2 5.Nc6+ Ka8 15. +- (#8): 1.Kc6 Kb8 2.Kd7 Ka8 3.Nd5 Kb8 4.Ne7 16. +- (#8): 1.Kd6 Kb8 2.Kd7 Ka8 3.Nd5 Kb8 4.Ne7 17. +- (#9): 1.Nb3 Ka7 2.Nd5 Ka6 3.Kc6 f4 4.Nb4+ Ka7 5.Kc7 18. +- (#9): 1.Nb7 Ka7 2.Nd5 Ka6 3.Kc6 f4 4.Nb4+ Ka7 5.Kc7 f5 6.Nd6 19. +- (#12): 1.Kb6 Kb8 2.Kc6 Kc8 3.Nb7 Kb8 20. +- (#27): 1.Nce6 Ka7 2.Nd4 Ka6 3.Kc6 Ka5 4.Kc5 Ka4 5.Nxf5 21. +- (#29): 1.Na4 Ka7 2.Kc6 Ka6 3.Kc5 Ka7 4.Nc3 Kb8 5.Ncd5 Kb7 6.Ne7 Ka6 7.Nxf5 22. = (0.01): 1.Ne4 fxe4
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