Author: Robert Hyatt
Date: 02:52:50 08/12/98
Go up one level in this thread
On August 11, 1998 at 23:13:03, Bernhard Bauer wrote: > >I suppose you have used your latest version of crafty and it is really good >news. It sounds that you have overcome that nasty null move problem. >Congratulations! > no... my point was that any 15.x should repeat this. The only changes in 15.18 are evaluation changes. The search is identical to the past few versions. No changes for null-move, no changes in ordering or extensions, nothing. The only pieces of code that are different are evaluation-related... If older versions couldn't find this, it is either (a) hashing (b) evaluation bugs or (c) something else... null-move does effect the search in odd ways, but I don't see how it is a problem here as this isn't really about zug as much as it is about sufficient depth with extensions... 15.18 will be out soon, once I am sure the evaluation is back under control and it is playing reasonably again. So far, so good, but I'm looking carefully... >I have used the older version of crafty. It's version 15.17 and I went on for 15 >min up to ply 17 and crafty could *not* find Rc2. By the way this position >is from Schwerfiguren-Opfer-Profil test from S. M. Kaminer. > >Here is my output from Crafty 15.17 > >starting thread 1 > 1 0.04 -2.06 1. Bd2 > 1-> 0.04 -2.06 1. Bd2 > 2 0.05 -2.28 1. Bd2 Qf5 > 2 0.05 -2.23 1. Be1+ Kg5 2. Bd2+ Kf5 3. Kg3 > 2 0.05 -2.21 1. g3+ Kg5 2. h4+ Kf5 3. Re2 > 2-> 0.07 -2.21 1. g3+ Kg5 2. h4+ Kf5 3. Re2 > 3 0.08 -1.86 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ g5 > 3-> 0.10 -1.86 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ g5 > 4 0.10 -1.68 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ Kg7 4. > Bf4 > 4-> 0.13 -1.68 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ Kg7 4. > Bf4 > 5 0.16 -1.85 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ Kg7 4. > Bg5 Qh8 > 5-> 0.22 -1.85 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ Kg7 4. > Bg5 Qh8 > 6 0.29 -1.79 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ Kg7 4. > Bg5 Qe6 5. Bf6+ Kh6 > 6-> 0.43 -1.79 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ Kg7 4. > Bg5 Qe6 5. Bf6+ Kh6 > 7 0.52 -1.74 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ Kg7 4. > Bg5 Qe6 5. Bf6+ Kh6 6. Kg2 > 7-> 0.91 -1.74 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ Kg7 4. > Bg5 Qe6 5. Bf6+ Kh6 6. Kg2 > 8 1.40 -1.81 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ Kh7 4. > Be3 Qe6 5. Bd4 Qe4 6. Bf6 > 8-> 2.41 -1.81 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ Kh7 4. > Be3 Qe6 5. Bd4 Qe4 6. Bf6 > 9 4.86 -1.85 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ Kh7 4. > Rf7+ Kg8 5. Rf3 Qc2 6. Rf2 Qc5 <HT> > 9-> 14.11 -1.85 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ Kh7 4. > Rf7+ Kg8 5. Rf3 Qc2 6. Rf2 Qc5 <HT> > 10 16.90 -1.81 1. g3+ Kg5 2. Rf2 Kh6 3. Bd2+ Kh7 4. > Re2 Qd8 5. Bf4 Qf6 6. Be5 Qf3 7. Re1 > <HT> > 10 21.16 -1.74 1. Rb2 Kg5 2. Rf2 h4 3. Bd2+ Kh5 4. > g4+ hxg3+ 5. Kxg3 Qc4 6. Be3 Qh4+ 7. > Kg2 g5 8. Bc5 Kg6 > 10 25.18 ++ 1. Rf2!! > 10 25.57 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qd3 > 4. Be1 Qd6+ 5. Kh1 Kg5 6. Bd2+ Kh4 > 7. Rf4+ Kg3 8. Rf3+ Kh4 9. Rf4+ > 10-> 25.65 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qd3 > 4. Be1 Qd6+ 5. Kh1 Kg5 6. Bd2+ Kh4 > 7. Rf4+ Kg3 8. Rf3+ Kh4 9. Rf4+ > 11 26.00 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qd3 > 4. Be1 Qd6+ 5. Kh1 Kg5 6. Bd2+ Kh4 > 7. Be1 > 11-> 31.27 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qd3 > 4. Be1 Qd6+ 5. Kh1 Kg5 6. Bd2+ Kh4 > 7. Be1 > 12 31.96 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qd3 > 4. Be1 Qd6+ 5. Kh1 Kg5 6. Bd2+ Kh4 > 7. Be1 > 12-> 43.19 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qd3 > 4. Be1 Qd6+ 5. Kh1 Kg5 6. Bd2+ Kh4 > 7. Be1 > 13 44.75 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qd3 > 4. Be1 Qd6+ 5. Kh1 Kg5 6. Bd2+ Kh4 > 7. Be1 > 13-> 1:05 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qd3 > 4. Be1 Qd6+ 5. Kh1 Kg5 6. Bd2+ Kh4 > 7. Be1 > 14 1:09 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qd3 > 4. Be1 Qd6+ 5. Kh1 Kg5 6. Bd2+ Kh4 > 7. Be1 > 14-> 1:55 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qd3 > 4. Be1 Qd6+ 5. Kh1 Kg5 6. Bd2+ Kh4 > 7. Be1 > 15 2:03 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qd3 > 4. Be1 Qd6+ 5. Kh1 Kg5 6. Bd2+ Kh4 > 7. Be1 > 15-> 4:12 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qd3 > 4. Be1 Qd6+ 5. Kh1 Kg5 6. Bd2+ Kh4 > 7. Be1 > 16 4:41 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qb8+ > 16-> 9:16 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qb8+ > 17 10:01 -0.66 1. Rf2 Qb8+ 2. Kh1 Qb1+ 3. Kh2 Qb8+ > time: 15:00 cpu:200% mat:-1 n:208390912 nps:231432 > ext-> checks:14754735 recaps:242929 pawns:272563 1rep:4263350 > predicted:0 nodes:208390912 evals:73548959 > endgame tablebase-> probes done: 147415 successful: 147415 > hashing-> trans/ref:47% pawn:21% used:w99% b99% > >White(1): Rf2 > >So it may be time to release Crafty 15.18 so we can agree? > >Kind regards and thank you for posting your results. >Bernhard
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