Author: Will Singleton
Date: 19:01:40 03/29/02
Go up one level in this thread
On March 29, 2002 at 16:39:53, Dann Corbit wrote: >On March 29, 2002 at 15:54:08, Art Basham wrote: > >>Here white's best move is Bg7..! >>(with the threat of 2. Qxh7+...and mate by the rook at h8... >> >> >>[D]1r2r1k1/3b1p1p/p4PpB/2qPp3/p1P1R2Q/P7/6PP/5R1K w - - >> >>Believe it or not, some engines miss this completely and rather play >>something like Bc1..etc. ??? > >Beowulf took 14.5 seconds on an AMD 950 MHz machine. > >Position 1 - White to play >-------------------------- >ID = >FEN = 1r2r1k1/3b1p1p/p4PpB/2qPp3/p1P1R2Q/P7/6PP/5R1K w - - > >. r . . r . k . >. . . b . p . p >p . . . . P p B >. . q P p . . . >p . P . R . . Q >P . . . . . . . >. . . . . . P P >. . . . . R . K > >Current Position = 0.58 >Number of Possible Moves = 36 > > 6 98 88 79497 Bc1 a5 Qf2 Rec8 Qxc5 Rxc5 > 7 118 184 180300 Bc1 h5 Qf2 Rbc8 Bb2 Bf5 Qxc5 Rxc5 > 8 94 396 420473 Bc1 h5 Qf2 Qxf2 Rxf2 Bf5 Rh4 e4 > 9 113 1038 1110972 Bc1 h5 Qg5 Rb3 Qh6 Qf8 Qxf8+ Kxf8 c5 Rd3 > 9 123! 1448 1555074 Bg7 h5 Qg5 Rb3 Qh6 Qb6 Rfe1 Rb1 Rxb1 Qxb1+ > 9 588 2554 2711402 Bg7 Bg4 Rxg4 h5 Ra1 Qxa3 Qe1 Qc5 Rxa4 hxg4 > 10 586 4907 5283324 Bg7 h5 Qg5 Qf2 Ree1 Qc5 Qg4 hxg4 d6 > 11 603 9748 10947729 Bg7 Bg4 Rxg4 h5 Qg5 Qf2 Qc1 Qe2 Rh4 Rb2 g3 Qd3 >Rf2 > >Search Time : 999.0 Seconds >Total Nodes Searched : 95521440 (84.8% Qui) >Total Nodes Evaluated : 80995522 >Cuts : Delta 19222644 : SEE 9400726 : Mate 0 > : Razor 5045011 : Eval 43111935 >Extensions : Check 3669449 : OneRep 631520 : CMThreat 119043 > : Pawn 560266 : Recap 296138 : RevCheck 244444 >Hash Stores (Size) : 6014980 (2097143) >Hash Probes (Hits) : 55812193 (4685047) >EGTB Probes (Hits) : 0 (0) >Move Ordering : 55.4% >Best Move = Bg7 >--Answer: Bg7 ** Correct ** >Time To Solution = 14.48 sec >Correct So Far : 1/1 Amateur does well here, probably by luck. Finds Bg7 at ply 4 after 0.12 sec, score +2, rising to +6 at ply 9, powerbook 300mhz. btw, a question re your node numbers. Beowulf reports 95 million total nodes, but shows only 10 million in ply 11? I assume you just omitted ply 12. And, the quiesce percentage seems high, although I notice some programs report high percentages, and some low. I'm thinking this is due to how nodes are counted. Does Beowulf happen to count qnodes as calls to quiesce, even if the quiesce search cuts off prior to making a move? Will
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