Author: Ren Wu
Date: 10:08:48 03/06/98
Go up one level in this thread
On March 06, 1998 at 07:27:46, Kai Lübke wrote: >The following position (probably not unknown to many who followed >the WMCCC in Paris) is from the Dark Thought vs. MChess 7 game in Paris. >In this situation, MChess 7 played Rc4!! > >2r2kn1/1p3pr1/pq2p3/3pP2N/b4P1P/PnPQ4/1B4P1/1R2KB1R b k - ; bm Rc4; id >"shep06" > >I have tested all current top programs on this, and they all find >the solution between 1:52 (Hiarcs 6) and 13:58 (Rebel 9, all on P6-200). >Their evaluations are between -0,62 (Hiarcs 6) and -0,25 (Fritz 5, Rebel >9). >MChess 7 itself takes 4:04 and scores it as -0,53. > >Now Junior 4.6 (engine) finds this in 4:08, and after 4:50 it is the >only program so far to return a positive score for black: +0,23. > >Maybe we'll soon have a program that actually scores this as a clear >win. At least we're one step closer now. :) > >Another "Hooray!" for Amir! > This is not a hard problem for my program Initiative. On a K6-200, with 24MB hash table, mine find the move Rc4 (fail high) after 52 seconds, at ply 10, and get the score .21 at 60 seconds. It finished ply 11 after 139 seconds, with score .99. the log file looks like 10. -52 37.4 4070305 b3c5 d3d2 g7g6 h1h3 g8h6 d2c1 h6f5 h5f6 c5e4 10. -51 52.4 5599675 c8c4 h5g7 c4e4 f1e2 a4b5 c3c4 b5c4 d3g3 e4e2 e1f1 b6f2 g3f2 e2b2 f1g1 b2f2 10. 21 60.6 6415213 c8c4 h5g7 c4e4 f1e2 a4b5 c3c4 b5c4 d3g3 c4e2 g7e6 f7e6 10. 31 65.9 7012326 c8c4 h5g7 c4e4 f1e2 a4b5 c3c4 b5c4 d3e4 d5e4 e2c4 b6e3 c4e2 e3g3 e1d1 g3g7 10. 31 71.6 7631678 c8c4 h5g7 c4e4 f1e2 a4b5 c3c4 b5c4 d3e4 d5e4 e2c4 b6e3 c4e2 e3g3 e1d1 g3g7 11. 99 110.6 11351981 c8c4 h5g7 c4e4 f1e2 a4b5 g7e6 b6e6 d3h3 e4e2 e1d1 e2d2 d1e1 e6g6 f4f5 d2e2 e1d1 g6g2 11. 99 138.8 14307908 c8c4 h5g7 c4e4 f1e2 a4b5 g7e6 b6e6 d3h3 e4e2 e1d1 e2d2 d1e1 e6g6 f4f5 d2e2 e1d1 g6g2 Be a ameture program, I am glad it can do something better than professionals! Alrought I know there are many more program can do this too. Ren. (renw@iname.com)
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