Author: Ernst Walet
Date: 01:32:36 10/22/00
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Shredder 4 needs 10 seconds to give a draw score here. [Event "?"] [Site "?"] [Date "2000.10.20"] [Round "?"] [White "?"] [Black "?"] [Result "*"] [SetUp "1"] new game! position: [FEN "3r1r1k/1b4pp/ppn1p3/4Pp1R/Pn5P/3P4/4QP2/1qB1NKR1 w - -"] opening book: C:\Shredder4\shredder.bkt tablebases with 4 pieces found! [Cache: 1 MB + internal 1.45 MB] endgame databases: 0 7 -> 0:02.27 -7.48 Rhg5 Qxc1 Rxg7 Bc8 Qh5 h6 R1g5 Qxg5 hxg5 Kxg7 gxh6+ Kh8 (251.905) 110.9 8.01 0:02.32 -7.73-- Rhg5 Qxc1 Rxg7 Nxd3 Rh1 Kxg7 Qg4+ fxg4 (258.256) 111.0 8.01 0:02.35 -8.23-- Rhg5 Qxc1 Rxg7 Nxd3 Rh1 Kxg7 Qg4+ fxg4 (261.732) 111.3 8.01 0:02.81 -8.86 Rhg5 Qxc1 Rxg7 Nxd3 Rxb7 Nxe1 Qxe1 Rd1 Rxh7+ Kxh7 (317.005) 112.8 8.02 0:03.80 -8.85++ Qe3 Rd7 (428.590) 112.7 8.02 0:04.43 -8.50++ Qe3 Rd7 Rg3 Nxd3 Nxd3 Rxd3 Qxd3 Qxc1+ Ke2 Nd4+ Qxd4 Qc4+ Qxc4 (512.765) 115.5 8.02 0:09.29 -7.72 Qe3 Rd7 Rhg5 Rfd8 R1g3 Nd5 Qd2 Nxe5 (1.057.890) 113.8 8.04 0:09.66 -7.71++ Qb2 Qxb2 Bxb2 Nxd3 Nxd3 Rxd3 Rhg5 Ne7 Ke2 (1.099.548) 113.8 8.04 0:09.89 -7.36++ Qb2 Qxb2 Bxb2 Nxd3 Nxd3 Rxd3 Rhg5 Rd1+ Ke2 Rfd8 Rxd1 Rxd1 (1.129.434) 114.1 8.04 0:09.94 -7.35 Qb2 Qxb2 Bxb2 Nxd3 Nxd3 Rxd3 Rhg5 Rd1+ Ke2 Rd7 (1.136.609) 114.3 8.11 0:10.66 -7.26++ Rxh7+ Kg8 (1.219.955) 114.4 8.11 0:10.66 0.00++ Rxh7+ Kxh7 Qh5+ Kg8 Rxg7+ Kxg7 Bh6+ Kh8 Bg5+ Kg8 Qg6+ Kh8 Qh5+ Kg8 (1.219.959) 114.3 8.11 0:10.66 0.00 Rxh7+ Kxh7 Qh5+ Kg8 Rxg7+ Kxg7 Qh6+ Kg8 Qxe6+ Rf7 Qxf7+ Kxf7 (1.220.373) 114.4 8 -> 0:10.69 0.00 Rxh7+ Kxh7 Qh5+ Kg8 Rxg7+ Kxg7 Qh6+ Kg8 Qxe6+ Rf7 Qxf7+ Kxf7 (1.223.260) 114.4 9.01 0:10.72 0.00 Rxh7+ Kxh7 Qh5+ Kg8 Rxg7+ Kxg7 Bh6+ Kh8 Bg5+ Kg8 Qg6+ Kh8 Qh5+ Kg8 (1.228.109) 114.5 9 -> 0:11.13 0.00 Rxh7+ Kxh7 Qh5+ Kg8 Rxg7+ Kxg7 Bh6+ Kh8 Bg5+ Kg8 Qg6+ Kh8 Qh5+ Kg8 (1.278.344) 114.8 10.01 0:11.16 0.00 Rxh7+ Kxh7 Qh5+ Kg8 Rxg7+ Kxg7 Bh6+ Kh8 Bg5+ Kg8 Qg6+ Kh8 Qh5+ Kg8 (1.283.474) 115.0 10 -> 0:12.21 0.00 Rxh7+ Kxh7 Qh5+ Kg8 Rxg7+ Kxg7 Bh6+ Kh8 Bg5+ Kg8 Qg6+ Kh8 Qh5+ Kg8 (1.418.450) 116.1 11.01 0:12.31 0.00 Rxh7+ Kxh7 Qh5+ Kg8 Rxg7+ Kxg7 Bh6+ Kh8 Bg5+ Kg8 Qg6+ Kh8 Qh5+ Kg8 (1.431.876) 116.3 11 -> 0:15.31 0.00 Rxh7+ Kxh7 Qh5+ Kg8 Rxg7+ Kxg7 Bh6+ Kh8 Bg5+ Kg8 Qg6+ Kh8 Qh5+ Kg8 (1.798.102) 117.4 12.01 0:15.47 0.00 Rxh7+ Kxh7 Qh5+ Kg8 Rxg7+ Kxg7 Bh6+ Kh8 Bg5+ Kg8 Qg6+ Kh8 Qh5+ Kg8 (1.822.406) 117.7 best move: Rh5xh7 time: 0:17.054 min n/s: 118.152 nodes: 2.014.978 Ernst. On October 21, 2000 at 05:28:14, Uri Blass wrote: >I composed this position to see if chessmaster can see perpetual check. > >[D]4k3/6RQ/6PP/8/r7/8/r7/7K b - - 0 1 > >The target is to see 0.00 score > >I found that chessmaster does not see the draw even after some minutes but after >Ra1+ Kg2 it can see the draw very quickly in clearly smaller depth. > >The same after Ra1+ Kh2 > >I tried also Fritz5.32 and it does not see the draw at least after a short time. > >If I give Fritz5.32 the moves Ra1+ Kg2 it can see the draw but after Ra1+ Kh2 >it has problems to see the draw. > >Fritz5.32 expects Kg2 when it plays Ra1+ and wants to play Kg2 at depth 13 with >evaluation 0.00. > >How many squares can the white king visit before the repetition?(it is clear >that the white king cannot visit all the 21 squares (b1-b3... h1-h3)) > >Uri
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