Author: Stan Arts
Date: 12:17:55 09/24/04
Go up one level in this thread
On September 24, 2004 at 14:19:56, Dan Andersson wrote: > Four moves win. One draws and one loss. And Kf3 probably isn't fastest. > First a single PV then a six PV search: > A nice hashtable test, to reach super-depths. Looks a bit like fine70-setup-in-a-hurry. Indeed many moves win, but it's a question of which move leads to mate the fastest. Neurosis also prefers Kf3. (no tablebases) With in the line promoting the c-pawn instead of the g-pawn, and also capturing white's a4-pawn. I did not let it run longer to find a second promotion or mate, so perhaps someone with a very fast computer, or some analysis can calculate this position to mate, and find the best solution. P3-550, 48 MB hash. Legal moves: 6 Static score: -1 Ply Score Time Nodes Best move and expected line ------------------------------------------------------------ 2 97 0 41 Kf5 Ke3 3 97 0 60 Kf5 Ke3 Kxg5 4 96 0 181 Kf5 Ke3 Kxg5 Ke4 Kf6 4 97 0 299 Ke5 Ke3 Kf5 Kd3 Ke3 Kxg5 Ke4 Kf6 Kd5 5 97 0 499 Ke5 Ke3 Kf5 Kd3 Kxg5 Ke4 Kf6 Kd5 6 96 0 938 Ke5 Ke3 Kf5 Kf3 Kxg5 Ke4 Kf6 Kd5 Kf5 6 97 0 1195 Kf5 < + > Ke3 Ke5 Kd3 Kf5 Ke3 6 98 5 1328 Kf5 Ke3 Ke5 Kd3 Kf4 Kc3 Kxg5 Kd3 Kf5 Ke3 Kd3 Ke3 Kd3 7 98 5 2073 Kf5 Ke3 Ke5 Kd3 Kf4 Kc3 Kxg5 Kd3 Kf5 Ke3 g5 8 97 5 3486 Kf5 Ke3 Ke5 Kd3 Kf4 Kc3 Kxg5 Kd3 Kf5 Ke3 g5 Kd3 Ke3 Kd3 Ke3 8 98 5 4355 Kf3 < + > Kd2 Ke4 Kc3 Kf5 Kd3 Kf4 Kc3 8 98 5 4544 Kf3 Kd2 Ke4 Kc3 Kf5 Kd3 Kf4 Kc3 Kxg5 Kd3 Kf5 Ke3 g5 Kd3 Ke3 Kd3 Ke3 9 109 5 5572 Kf3 Kd2 Ke4 Ke2 Kd4 Kf3 Kd3 Kf4 Kxc4 Ke4 Kb4 10 109 11 7905 Kf3 Kd2 Ke4 Ke2 Kd4 Kf3 Kd3 Kg3 Kxc4 Kf4 Kd5 11 114 11 10899 Kf3 Kd2 Ke4 Ke2 Kd4 Kf3 Kxc4 Ke4 Kb4 Kd5 c4 12 114 16 16416 Kf3 Kd2 Ke4 Ke2 Kd4 Kf3 Kxc4 Ke4 Kb4 Kd5 c4 Kd4 13 113 27 26280 Kf3 Kd2 Ke4 Ke2 Kd4 Kf3 Kxc4 Ke4 Kb4 Ke5 c4 Kf6 c3 14 113 38 37219 Kf3 Kd2 Ke4 Ke2 Kd4 Kf3 Kxc4 Ke4 Kb4 Ke5 c4 Kf6 c3 Kxg6 15 236 55 53047 Kf3 < + > Kd2 Ke4 Ke2 Kd4 Kf3 Kxc4 Kg2 Kd5 Kf3 Kc4 Kg2 Kd5 Kf3 Kc4 15 243 60 57549 Kf3 Kd2 Ke4 Ke2 Kd4 Kf3 Kxc4 Ke3 Kb3 Kd3 c4+ Kd4 Kb4 Ke4 Kxa4 Kd4 Kb4 16 243 82 83130 Kf3 Kd2 Ke4 Ke2 Kd4 Kf3 Kxc4 Ke3 Kb3 Kd3 c4+ Kd4 Kb4 Ke3 Kxa4 Kd4 Kb4 Ke5 17 265 121 126508 Kf3 Kd2 Ke4 Ke2 Kd4 Kd2 Kxc4 Kc2 Kb4 Kb2 c4 Kc2 c3 Kc1 Kb3 Kb1 Kxa4 Kc2 Kb4 Kd3 17 266 165 173661 Kxg5 < + > Ke4 Kh4 Ke3 g5 Kd2 Kg4 Kc3 Kf4 Kd2 g4 Kc2 Ke4 Kd2 Kd4 Ke2 Kxc4 17 740 165 174297 Kxg5 < + > Ke4 Kh4 Ke3 g5 Kd2 Kg4 Kc3 Kf4 Kd2 g4 Kc2 Ke4 Kd2 Kd4 Ke2 Kxc4 17 764 236 250386 Kxg5 Ke4 Kh4 Kd5 g5 Kxc5 g4 Kb5 g3 Kxa5 g2 Kb5 g1=Q a5 Qb1+ Kc5 Kg5 18 767 280 295718 Kxg5 Ke4 Kh4 Kd5 g5 Kxc5 g4 Kb5 g3 Kxa5 g2 Kb5 g1=Q a5 Qb1+ Kc5 Qf5+ Kb4 Kg4 19 767 368 399692 Kxg5 Ke4 Kh4 Kd5 g5 Kxc5 g4 Kb5 g3 Kxa5 g2 Kb5 g1=Q a5 Qb1+ Ka4 Qd3 Kb4 Kg4 20 768 527 570327 Kxg5 Ke4 Kh4 Kd5 g5 Kxc5 g4 Kb5 g3 Kxa5 g2 Kb5 g1=Q a5 Qb1+ Ka4 Kg3 c5 Qb7 Ka3 21 827 664 711588 Kxg5 < + > Ke4 Kh4 Kd5 g5 Kxc5 g4 Kb5 g3 Kc5 g2 Kd4 Kh3 c5 g1=Q+ Kd5 Qd1+ Ke4 Kh2 c6 Kg2 21 847 1746 1862966 Kxg5 Ke4 Kh4 Kd5 g5 Kxc5 g4 Kb5 g3 c5 g2 c6 g1=Q c7 Qc1 Kb6 Kg5 Kb7 Qb2+ Kc6 Qc2+ Kd6 Qd3+ Kc6 Qc4+ Kb7 Qb3+ Ka6 Qc4+ Kb6 Kf6 Kb7 Qb3+ Ka6 22 852 3202 3407894 Kxg5 Ke4 Kh5 Kd5 g5 Kxc5 g4 Kb5 g3 c5 g2 c6 g1=Q c7 Qc1 Kb6 Kg6 Kb7 Qb1+ Kc6 Qf5 Kb7 Qd7 Kb6 Kf6 Ke6 23 853 5630 5736984 Kxg5 Ke4 Kh5 Kd5 g5 Kxc5 g4 Kb5 g3 c5 g2 c6 g1=Q c7 Qc1 Kb6 Kg5 Kb7 Qb1+ Kc6 Qe4+ Kb6 Qe6+ Kb7 Qd7 Kb6 Kf6 Ke6 24 853 10315 10821410 Kxg5 Ke4 Kh5 Kd5 g5 Kxc5 g4 Kb5 g3 c5 g2 c6 g1=Q c7 Qc1 Kb6 Kg5 Kb7 Qb1+ Ka7 Qc2 Kb7 Qe4+ Kb8 Qf4 Ka8 Qc1 Kb7 Qb1+ Ka7 Qc2 Kb7 Qe4+ Kb8 Qf4 Ka8 Qc1 25 861 17812 19781902 Kxg5 Ke4 Kf6 Kd5 g5 Kxc5 Ke5 Kb6 g4 c5 g3 c6 g2 Kb7 g1=Q c7 Qb1+ Ka7 Qc2 Kb7 Qb3+ Ka6 Qc4+ Kb7 Qd5+ Kb8 Qb3+ Ka7 Qe6 Kb7 Qd5+ Kb8 Qb3+ Ka7 Qe6 Kb7 Qd5+ 25 862 17949 19936769 Kf3 < + > Kd2 Ke4 Ke2 Kd4 Kd2 Kxc4 Kc2 Kb4 Kb2 c4 Kc2 c3 Kd3 Kb3 Kd4 c2 Ke5 Kb2 Kf6 c1=Q Kxg6 Ka2 Kf6 Kb3 25 942 18169 20168708 Kf3 < + > Kd2 Ke4 Ke2 Kd4 Kd2 Kxc4 Kc2 Kb4 Kd2 Kc4 Kc2 Kb4 Kd2 Kc4 25 958 20372 22525286 Kf3 Kd2 Ke4 Ke2 Kd4 Kf3 Kxc4 Ke4 Kb3 Ke5 c4 Kf6 c3 Kxg6 c2 Kf7 c1=Q g6 Qc4+ Kf8 Qf4+ Kg8 Qc4+ Kh8 Qc8+ Kg7 Qe6 Kh7 Qh3+ Kg7 Qg2 Kf7 Qf1+ Ke7 Qe2+ Kf7 Qf3+ Ke7 26 961 21432 23696941 Kf3 Kd2 Ke4 Ke2 Kd4 Kf3 Kxc4 Ke4 Kb4 Ke5 c4 Kf6 c3 Kxg6 c2 Kf7 c1=Q g6 Qc4+ Kf8 Qc5+ Kg8 Qd5+ Kh8 Qh5+ Kg7 Qg5 Kh7 Qh5+ Kg7 Qg5 Kh7 Qh5+ Kg7 27 961 31368 35541268 Kf3 Kd2 Ke4 Ke2 Kd4 Kf3 Kxc4 Ke4 Kb4 Ke5 c4 Kf6 c3 Kxg6 c2 Kf7 c1=Q g6 Qc4+ Kf8 Qc8+ Kg7 Kxa4 Kf6 Qf8+ Ke6 Kb4 Ke5 Kd5 Qf5+ Kd4 28 970 52629 60753990 Kf3 Kd2 Ke4 Ke2 Kd4 Kf3 Kxc4 Ke4 Kb3 Ke5 c4 Kf6 c3 Kxg6 c2 Kf7 c1=Q g6 Qf4+ Kg8 Qxa4 g7 Qe8+ Kh7 a4 g8=Q+ Qxg8+ Kxg8 a3 Kf7 a2 Ke6 Ke5 Kd5 Ke5 Kd5 29 1005 100953 118184644 Kf3 Kd2 Ke4 Ke2 Kd4 Kf3 Kxc4 Ke4 Kb4 Ke5 c4 Kf6 c3 Kxg6 c2 Kf7 c1=Q Kg6 Kc5 Kf5 Kd6 Kf6 Qf4+ Kg6 Ke5 Kh6 Kf5 Kg7 Kxg5 Qxa4 Kf7 Qb3+ Ke8 Total nodes:141049423 n/sec:118000 (q-nodes:2% max depth:45) Greetings Stan
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