Author: Steve Maughan
Date: 01:11:44 12/24/02
Go up one level in this thread
Dieter, >>6r1/1p3k2/pPp4R/K1P1p1p1/1P2Pp1p/5P1P/6P1/8 w - - bm Rxd6; id "BBC630" > >This should be "bm Rxc6" Yes - I corrected this in the version I used then pasted in the wrong version - apologies! >>r5r1/n1q1p2k/3pPpp1/P1pP4/2P4N/R1B5/2Q3PP/7K w - - bm Bd2; id "BBC958" > >Yace finds Bd2 fast with score mate in 10, then switches to Be1 with score mate >in 9. In the automatically generated table below, it is considered unsolved. WOW - I hadn't realised that there was a shorter mate. In BBC they state that the best move is Bxf6 but CM 8000 found Bd2 really quickly. I've always considered this a good test for threat detection / extension. >Yace, P4 2.53, 300M hash, 3 min test time. Not surprisingly, it solved less >positions than the programs you tested (especially when considering the >hardware difference). From the positions it found, for quite a few, it was >rather fast compared to the others. Some positions seem to be at the edge of >finding. It sees compensation for a sac, but just a bit too little >compensation. I chose the positions so that they hopefully would be "at the edge of finding" them - so that's good! > 5s 20s 60s 120s 180s > BBC55: 1 (Rxg7) 1 (Rxg7) 1 (Rxg7) 1 (Rxg7) 1 (Rxg7) 3.370 > BBC116: 0 (Qd3) 0 (Qd3) 0 (Qd3) 0 (Qd3) 0 (Qd3) nf > BBC142: 1 (Nxf7) 1 (Nxf7) 1 (Nxf7) 1 (Nxf7) 1 (Nxf7) 4.151 > BBC158: 1 (Qh6+) 1 (Qh6+) 1 (Qh6+) 1 (Qh6+) 1 (Qh6+) 4.043 > BBC161: 1 (Nf6+) 1 (Nf6+) 1 (Nf6+) 1 (Nf6+) 1 (Nf6+) 4.962 > BBC167: 1 (Rxa6) 1 (Rxa6) 1 (Rxa6) 1 (Rxa6) 1 (Rxa6) 0.978 > BBC175: 1 (Bh6) 1 (Bh6) 1 (Bh6) 1 (Bh6) 1 (Bh6) 3.705 > BBC189: 1 (Nxh6) 1 (Nxh6) 1 (Nxh6) 1 (Nxh6) 1 (Nxh6) 2.655 > BBC192: 0 (Ne5) 0 (Ne5) 0 (Ne5) 0 (Ne5) 0 (Ne5) nf > BBC346: 1 (Ba4) 1 (Ba4) 1 (Ba4) 1 (Ba4) 1 (Ba4) 1.238 > BBC354: 0 (N3d4) 0 (Qe2) 0 (Qe2) 0 (Qe2) 0 (Qe2) nf > BBC403: 0 (O-O) 0 (O-O) 0 (O-O) 1 (Nxh7) 1 (Nxh7) 63.790 > BBC405: 0 (Rac1) 1 (Rxd4) 1 (Rxd4) 1 (Rxd4) 1 (Rxd4) 17.046 > BBC442: 0 (cxd5) 0 (cxd5) 1 (Nxg6) 1 (Nxg6) 1 (Nxg6) 25.040 > BBC459: 0 (Nxf6) 0 (Nxf6) 0 (Nxf6) 0 (Nxf6) 0 (Nxf6) nf > BBC539: 0 (Qh4) 0 (Qh4) 0 (Rb6) 1 (f4) 1 (f4) 92.582 > BBC547: 0 (Bxf8) 0 (Bxf8) 1 (Nd5) 0 (Bc5) 0 (Ne2) nf > BBC630: 1 (Rxc6) 1 (Rxc6) 1 (Rxc6) 1 (Rxc6) 1 (Rxc6) 3.498 > BBC958: 1 (Bd2) 1 (Bd2) 1 (Bd2) 0 (Be1) 0 (Be1) nf > BBC770: 0 (Bxe5) 0 (Bxe5) 0 (Bxe6) 0 (Bxe6) 0 (Bxe6) nf > > Summary: 10 11 13 13 13 227.058 Nice output. I do prefer the exponential decay method - you can even express the final score as a percentage. Regards, Steve
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