Author: Vincent Diepeveen
Date: 09:32:45 12/27/00
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On December 27, 2000 at 12:29:08, David Rasmussen wrote: >On December 27, 2000 at 10:29:34, Gian-Carlo Pascutto wrote: > >>On December 27, 2000 at 09:43:05, Vincent Diepeveen wrote: >> >>> >>>[D]5n2/B3K3/2p2Np1/4k3/7P/3bN1P1/2Prn1P1/1q6 w - - 0 1 mate in 30 >>> >>>Diep needs 10k nodes and 0 seconds to find it. >>> >>>How about the programs you have over there, do they need the same amount >>>of nodes? >> >>Sjeng: prove >> >>Max time to search (s): 120 >> >>P: 0 D: 100000000 N: 27717 S: 27716 Mem: 0.85M Iters: 758 >>This position is WON. >>PV: e3g4 e5f5 g4h6 f5e5 h6f7 e5f5 f7d6 f5e5 f6g4 e5d5 g4e3 d5e5 d6f7 e5e4 f7g5 >>e4e5 g5f3 e5e4 f3d2 e4e5 d2f3 e5e4 f3g5 e4e5 g5f7 e5e4 f7d6 e4e5 e3g4 e5d5 g4f6 >>d5e5 d6f7 e5f5 f7h6 f5e5 h6g4 e5f5 g4e3 f5e5 f6g4 e5e4 g4f2 e4e5 f2d3 e5e4 d3f2 >>e4e5 f2g4 e5e4 g4f6 e4e5 e3c4 e5f5 c4d6 f5e5 f6g4 e5d5 c2c4 >> >>The 27K nodes is tricky as most of them aren't really searched. This >>takes less than a second on my Cyrix120. >> >>-- >>GCP > >How on earth can you guys find this so fast? First of all SJENG is a mate prover so let's forget sjeng. Diep isn't a mate prover but a normal chessprogram. It took indeed some 6 years of search experiments to get that far. Note that this position was at the homepage from WEINERS company to promote if i'm right shredder2. Nowadays to my amazement shredder4 no longer finds it! dunno about shredder5. So if i were as ignorant as the majority of posters here: shredder got worse! Greetings, Vincent
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