Author: Ernst Walet
Date: 08:56:59 12/31/00
Go up one level in this thread
After 3 hours of anayzing Junior6 does anly see a draw as well, so maybe it as a draw after all. Ernst. New position n1QBq1k1/5p1p/5KP1/p7/8/8/8/8 w - - 0 1 Analysis by Junior 6.0: 1.gxh7+ Kxh7 2.Qh3+ Kg8 3.Qg2+ Kf8 4.Qxa8 +- (1.82) Depth: 3 00:00:00 1.gxh7+! +- (2.12) Depth: 6 00:00:00 3kN 1.gxh7+! Kh8 2.Qxa8 a4 3.Qd5 Kxh7 4.Qxf7+ Qxf7+ 5.Kxf7 +- (2.21) Depth: 6 00:00:00 6kN 1.gxh7+ Kh8 2.Qxa8 Qe6+ 3.Kg5 Qe5+ 4.Kh6 Qg7+ 5.Kh5 Qxh7+ 6.Kg4 f5+ 7.Kg5 Qg8+ 8.Kxf5 a4 ² (0.68) Depth: 9 00:00:01 511kN, tb=1 1.gxh7+ Kh8 2.Qxa8 Qe6+ 3.Kg5 Kxh7 4.Bxa5 Qe5+ 5.Kh4 f5 6.Qd8 f4 7.Bc7 Qe4 = (0.15) Depth: 12 00:00:09 4871kN, tb=180 1.gxh7+ Kh8 2.Qxa8 Qe6+ 3.Kg5 Kxh7 4.Qh1+ Kg8 5.Bf6 Qe3+ 6.Kh5 Qe2+ 7.Kh6 Qe3+ 8.Bg5 Qb6+ 9.Kh5 Qg6+ 10.Kg4 = (0.02) Depth: 14 00:00:33 16259kN, tb=1294 1.gxh7+ Kh8 2.Qxa8 Qe6+ 3.Kg5 Kxh7 4.Qh1+ Kg8 5.Bf6 Qe3+ 6.Kh5 Qe2+ 7.Kh6 Qe3+ = (0.00) Depth: 15 00:01:51 55444kN, tb=4986 1.gxh7+ Kh8 2.Qxa8 Qe6+ 3.Kg5 Kxh7 4.Qh1+ Kg8 5.Bf6 Qe3+ 6.Kh5 Qe2+ 7.Kh6 Qe3+ = (0.00) Depth: 16 00:03:30 103560kN, tb=12087 1.gxh7+ Kh8 2.Qxa8 Qe6+ 3.Kg5 Kxh7 4.Qh1+ Kg8 5.Bf6 Qe3+ 6.Kh5 Qe2+ 7.Kh6 Qe3+ = (0.00) Depth: 17 00:06:53 197795kN, tb=31171 1.gxh7+ Kh8 2.Qxa8 Qe6+ 3.Kg5 Kxh7 4.Qh1+ Kg8 5.Bf6 Qe3+ 6.Kh5 Qe2+ 7.Kh6 Qe3+ = (0.00) Depth: 18 00:15:18 428446kN, tb=79048 1.gxh7+ Kh8 2.Qxa8 Qe6+ 3.Kg5 Kxh7 4.Qh1+ Kg8 5.Bf6 Qe3+ 6.Kh5 Qe2+ 7.Kh6 Qe3+ = (0.00) Depth: 19 00:35:01 966854kN, tb=190702 1.gxh7+ Kh8 2.Qxa8 Qe6+ 3.Kg5 Kxh7 4.Qh1+ Kg8 5.Bf6 Qe3+ 6.Kh5 Qe2+ 7.Kh6 Qe3+ = (0.00) Depth: 20 01:26:20 2434155kN, tb=463845 (Ernst, ChessTown 31.12.2000) On December 31, 2000 at 08:04:26, Uri Blass wrote: >On December 31, 2000 at 06:51:23, Ernst Walet wrote: > >>About two weeks ago someone posted the following postsion: >> >>[D]n1QBq1k1/5p1p/5KP1/p7/8/8/8/8 w - - >> >>As far as I can recall it should have been a mate for white, but the programs I >>tried can only find a draw, ie. Shredder4 on a PIII-500E with 128MB hash and all >>3-4-5 men EGTB. Can someone shine a light on this please? >> >>Thanks, Ernst. > > >I did not try to solve the position but I read that there is a beautiful >zunzwang so it seems to be a bad idea to use null movers like shredder. > >The only program that I would try to solve it instead of you are Junior,Rebel >and Chessmaster because Junior and Rebel are not null movers and chessmaster at >least does not use null move in a stupid way like other programs because I know >that it solved a study that other programs like Fritz could never solve because >of null move problem. > >Chessmaster is also very good in finding mates. > >Uri
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