Author: Bernhard Bauer
Date: 03:14:11 08/25/05
Go up one level in this thread
On August 25, 2005 at 04:57:49, Uri Blass wrote: >On August 25, 2005 at 02:27:30, Bernhard Bauer wrote: > >>On August 24, 2005 at 10:32:06, David Dahlem wrote: >> >>>>Have compiled crafty 19.20 on windows with MT=1 and it runs fine. >>>>Crafty is the only engine solving my zug positions. It takes time, >>>>but it finds the solutions. Here other engines will fail. >>>>Bob has, as always, released his wccc version. This is great. >>>>For my purposes crafty is much better than many other engines. >>>>I'm not doing engine matches. >>>>Congratulations to a good result on wccc2005. >>>>Kind regards >>>>Bernhard >>> >>>Are your zug positions available as a test suite, or could you post them here? >>> >>>Thanks >>>Dave >> >>Hi David, >> >>Here is a crafty file with several studies. I think, Fruit, Toga, Zappa will >>fail quit often, but it's easy to modify crafty in sutch a way that it solves >>all of these pretty fast. >>Kind regards >>Bernhard >> >>--------------------------------- >>title "Zugzwangstellung von Eduard Nemeth 2002" >>setboard 3K4/4p3/4k2p/p2pBp2/3PpP2/4P3/P6p/7B w >>solution Ke8 > >Fruit2.1 >1\1 > >>title Study by ??? >>setboard 8/8/8/B1p3pp/7k/1P2q2P/5NP1/7K w - - bm Bc7; >>solution Bc7 > >2\2 > >>title Schiflin-Tschernow, UdSS-ch 1960 >>setboard 5k2/1p1b2p1/2p2PPp/3pQ3/3P4/q1P3K1/8/8 w - - bm Kh4; >>solution Kh4 > >3\3 > >>title ??? >>setboard 8/4P3/4r3/k7/8/4N3/6p1/1R4Kb w - - bm Nf5; >>solution Nf5 > >4\4 > > >>title ??? >>setboard 8/4kb1p/2p3pP/1pP1P1P1/1P3K2/1B6/8/8 w - - bm e6; >>solution e6 > >5\5 > >>title CTT4-11 Crafty-IsiChess >>setboard 8/8/1p1r1k2/p1pPN1p1/P3KnP1/1P6/8/3R4 b - - bm Nxd5; >>solution Nxd5 > >failure at depth 21 > >5\6 > >>title Study by Kubbel >>setboard 8/5pq1/p4p2/Bk6/1P3P2/3P1B2/P7/2K5 w - - bm Kb2; >>solution Kb2 > >6\7 >>title Study Rd5 >>setboard 8/3R4/4B2B/4r2k/8/3p3K/8/8 w - - bm Rd5; > >7\8 >>solution Rd5 >>title Study by S. Kaminer (1925) >>setboard 2q5/8/6p1/B6p/7k/7P/R5PK/8 w - - bm Rc2; >>solution Rc2 > >8\9 >>title Study Mate in 8 1. Rf7 Rhxf7 2. Ne7+ >>setboard 5r2/1B5r/2N5/8/8/5R2/5p1p/5K1k w - - bm Rf7; >>solution Rf7 > >9\10 > >>title Study Bc6 >>setboard 4B/8/6N1/5p2/1r4p1/6pk/7b/4K2Q w - - bm Bc6; >>solution Bc6 > >10\11 > >>title Study Qa8 >>setboard 3Q4/3p4/P2p4/N2b4/8/4P3/5p1p/5Kbk w - - bm Qa8; >>solution Qa8 > >no solution depth 22 > >10/12 > >>title Study Ba5+ >>setboard 8/p7/qkpN1p2/8/1B1P4/PP3K2/5P2/8 w - - bm Ba5+; >>solution Ba5+ > >No solution depth 21 >Bc5+ score 2.39 pawns for black >10/13 >>title Study Qd3 >>setboard 8/8/1p6/p7/kq1Q4/8/K7/8 w - - bm Qd3; >>solution Qd3 > >11/14 > >>title Study V. Kovalenko, 1998 1.Kc8 Ka7 2.Qc7+ Ka6 3.Kb8 b4 4.Qc6+ Ka5 5.Ka7 >>setboard k7/3K4/8/1p6/5n2/8/p1QP3p/5r2 w - - bm Kc8; >>solution Kc8 > >12/15 >fruit's main line is 1.Kc8 Rc1 and the score at depth 17-18 is mate in 12 > >>title Study Koslovsky >>setboard 8/q1k5/1pP4p/pP1K3p/P1PB4/6pP/6P1/8 w - - bm Bxb6; >>solution Bxb6 > >solved at depth 20 but needed almost 3 minutes on A3000 > >13/16 > >>title Study "Chessboard magic #67" >>setboard 4KBkr/7p/6PP/4P3/8/3P1p2/8/8 w - - bm g7; >>solution g7 > >14/17 > >>title "Study by Rinck, Bohemia 1906" >>setboard 8/7q/2K2p2/4p3/2k1P2p/8/3P4/7Q/ w - - bm Qb1; >>solution Qb1 > >15/18 > >>title Study Qd3 >>setboard 8/6p1/1p6/p7/kq2Q3/8/K7/8 w - - bm Qd3; >>solution Qd3 >>title ??? > >at depth 30 fruit is hypnotized by Qd3 but unfortunately cannot choose it in a >reasonable time > >It considers it for more than 9 minutes without finishing iteration 30 and >without changing it's mind. > >I have no patience to wait more than 900,000 knodes so the result is >failure >15/19 > >>setboard N7/p7/8/q1p5/1p6/k7/8/1K1Q4 w - - 0 1 >>solution Qc1 >>end >>-------------------------------------------- > >solved 16/20 > >80% is not so bad and I suspect that fruit2.1 can solve more position if you >only give it more time. > >I am not sure if 20% failure is fail quite often. I am not sure either. If I would make only one blunder in 20% of my games, I would not think it's often. However, if I would blunder 20% of the moves in one game, that would be quite often. Look at the following 3 positions: 8/k7/3p4/p2P1p2/P2P1P2/8/8/K7 w Fruit2.1 needs 2:20 min to find Kb1 7k/2p5/2p5/2P4p/3P1p1p/5P1P/8/K7 w Fruit2.1 gives Kb2 whithin 5 min 2k5/2p2p2/2p1p3/2P1PpP1/1p1P1p2/1P3P2/1K3P2/8 w Fruit2.1 needs 55 sec to find Kb1. My crafty version only 15 sec. Let me recall something Bruce Moreland wrote: "Search should find it" Agressive pruning makes your engine faster and usually stronger, but not more reliable. Kind regards Bernhard
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