Author: Robert Hyatt
Date: 08:33:19 08/25/05
Go up one level in this thread
On August 25, 2005 at 06:14:11, Bernhard Bauer wrote: >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 If you are interested in test sets, I can run most anything. I am currently running the Nolot positions for 60 minutes each. On the opteron box, a 1-cpu run gets five correct. Will see if the 2-4-8 cpu runs find more...
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