Author: Uri Blass
Date: 04:14:39 01/05/02
Go up one level in this thread
On January 05, 2002 at 06:52:23, Uri Blass wrote: >On January 05, 2002 at 06:16:37, Gian-Carlo Pascutto wrote: > >>On January 04, 2002 at 22:04:34, John Merlino wrote: >> >>>Chessmaster 8000 is still the champion at this kind of stuff. >> >>Hah! I can see from this uninformed remark that you obviously >>have never used Sjeng. >> >>Sjeng: prove >> >>Max time to search (s): 60 >> >>P: 0 D: 100000000 N: 39129 S: 39128 Mem: 1.64M Iters: 1750 MaxDepth: 43 >>Time : 0.660000 >>This position is WON. >>PV: b4c5 g1f1 c8f8 f1e1 c5b4 e1d1 f8d8 d1c1 b4a3 c1b1 d8b8 b1a1 a3b2 a1b1 b2d4 b >>1c1 d4e3 c1d1 b8d8 d1e1 e3d2 e1d1 d2f4 d1e1 f4g3 e1f1 d8f8 f1g1 g4h3 a2a1q g3h2 >> >>0.66 seconds >> >>So John, how does your 'champion' do on the other position in this thread? >> >>-- >>GCP > >The mate in the second position is too long and not relevant >for practical games. > >I think that a correct comparison should be not in finding >easy long mates but in finding hard shorter mate > >here is an example for a shorter mate > >I did not give yace enough time to calculate >the number of moves to mate but >I feel sure that the mate can be seen >by chess programs after enough time and is a shorter mate. > >Yace also did not use most of the tablebases. > >This is the position that can happen if white miss the mate in >14 and blunders by 1.Kg3 > >I give an analysis of yace that is probably going to see >the mate score at depth 16 > >How much time do programs need to find the mate? > > >New position >2R5/8/8/8/1B6/6K1/p1p1p1p1/6kb b - - 0 1 > >Analysis by Yace 0.99.56: > >1...e1Q+ 2.Bxe1 a1Q > -+ (-7.61) Depth: 1 00:00:04 >1...a1Q > -+ (-9.08) Depth: 1 00:00:04 >1...a1Q 2.Bc5+ Kf1 > -+ (-9.06) Depth: 2 00:00:04 >1...a1Q 2.Bc5+ Kf1 3.Rf8+ Ke1 > -+ (-9.09) Depth: 3 00:00:04 >1...a1Q 2.Bc5+ Kf1 3.Rf8+ Ke1 4.Bb4+ Kd1 > -+ (-9.25) Depth: 4 00:00:04 >1...a1Q 2.Bc5+ Kf1 3.Rf8+ Ke1 4.Bb4+ Kd1 5.Rd8+ Kc1 6.Kh2 > -+ (-9.01) Depth: 5 00:00:04 3kN >1...a1Q 2.Bc5+ Kf1 3.Rf8+ Ke1 4.Bb4+ Kd1 5.Rd8+ Kc1 6.Bd2+ Kb1 7.Rb8+ Ka2 > -+ (-8.97) Depth: 6 00:00:04 10kN >1...e1Q+ 2.Bxe1 a1Q 3.Bf2+ Kf1 4.Rf8 g1Q+ 5.Kf4 > -+ (-8.98) Depth: 6 00:00:04 10kN >1...e1Q+ 2.Bxe1 a1Q 3.Bf2+ Kf1 4.Rxc2 Qe5+ 5.Kg4 Qe4+ 6.Kh3 > -+ (-11.71) Depth: 6 00:00:04 17kN >1...e1Q+ 2.Bxe1 a1Q 3.Bf2+ Kf1 4.Rxc2 Qe5+ 5.Kg4 Qe4+ 6.Kh3 Qd3+ 7.Kh2 > -+ (-11.76) Depth: 7 00:00:04 50kN >1...e1Q+ 2.Bxe1 a1Q 3.Bf2+ Kf1 4.Rf8 g1Q+ 5.Bxg1+ Kxg1 6.Re8 c1Q 7.Kh3 > -+ (-12.16) Depth: 8 00:00:04 98kN >1...e1Q+ 2.Bxe1 a1Q 3.Bf2+ Kf1 4.Rf8 c1Q 5.Be3+ Ke1 6.Bxc1 g1Q+ 7.Kh3 > -+ (-13.16) Depth: 8 00:00:04 98kN >1...e1Q+ 2.Bxe1 a1Q 3.Bf2+ Kf1 4.Rxc2 Qg7+ 5.Kf4 g1Q 6.Bxg1 Qxg1 > -+ (-13.17) Depth: 8 00:00:05 98kN >1...e1Q+ 2.Bxe1 a1Q 3.Bf2+ Kf1 4.Rxc2 Qe5+ 5.Kh3 g1Q 6.Bd4 Qexd4 7.Rb2 > -+ (-13.57) Depth: 9 00:00:05 298kN >1...e1Q+ 2.Bxe1 a1Q 3.Bf2+ Kf1 4.Kh3 c1Q 5.Rc2 > -+ (-14.57) Depth: 9 00:00:05 298kN >1...e1Q+ 2.Bxe1 a1Q 3.Bf2+ Kf1 4.Rxc2 Qe5+ 5.Kh3 Qf5+ 6.Kg3 Qxc2 7.Bg1 Kxg1 >8.Kh3 > -+ (-15.45) Depth: 9 00:00:06 387kN >1...e1Q+ 2.Bxe1 a1Q 3.Bf2+ Kf1 4.Kg4 c1Q 5.Be1 > -+ (-15.85) Depth: 10 00:00:06 784kN >1...e1Q+ 2.Bxe1 a1Q 3.Bd2 Kf1 4.Rf8+ Ke2 5.Rf2+ Kd3 6.Rxg2 Bxg2 7.Bf4 Be4 8.Bc1 >Qxc1 > -+ (-17.27) Depth: 10 00:00:09 1577kN >1...e1Q+ 2.Bxe1 a1Q 3.Bf2+ Kf1 4.Rxc2 g1Q+ 5.Bxg1 Kxg1 6.Re2 Qd1 7.Re8 Qb3+ >8.Kf4 Qa4+ 9.Ke5 > -+ (-17.39) Depth: 11 00:00:12 2822kN >1...a1Q 2.Bc5+ Kf1 3.Rf8+ Ke1 4.Bb4+ Kd1 5.Rd8+ Kc1 6.Bd2+ Kb1 7.Rb8+ Qb2 8.Ra8 >e1Q+ 9.Kh2 c1Q 10.Kh3 > -+ (-17.40) Depth: 11 00:00:15 3935kN >1...a1Q 2.Bc5+ Kf1 3.Rf8+ Ke1 4.Bb4+ Kd1 5.Rd8+ Kc1 6.Bd2+ Kb1 7.Rb8+ Qb2 >8.Rxb2+ Kxb2 9.Kf2 c1Q 10.Bxc1+ Kxc1 11.Kxe2 g1Q 12.Kd3 > -+ (-17.83) Depth: 11 00:00:18 5022kN >1...a1Q 2.Bc5+ Kf1 3.Rf8+ Ke1 4.Bb4+ Kd1 5.Rd8+ Kc1 6.Bd2+ Kb1 7.Rb8+ Qb2 >8.Rxb2+ Kxb2 9.Kf2 e1Q+ 10.Kxe1 g1Q+ 11.Ke2 Qg2+ 12.Ke3 Qe4+ > -+ (-17.81) Depth: 12 00:00:21 6145kN >1...a1Q 2.Bc5+ Kf1 3.Rf8+ Ke1 4.Bb4+ Kd1 5.Rd8+ Kc1 6.Bd2+ Kb1 7.Rb8+ Qb2 >8.Rxb2+ Kxb2 9.Kf2 e1Q+ 10.Kxe1 g1Q+ 11.Ke2 Be4 12.Bc3+ Kb1 13.Bd2 c1Q 14.Bxc1 >Kxc1 > -+ (-17.83) Depth: 13 00:00:55 18160kN >1...a1Q 2.Bc5+ Kf1 3.Rf8+ Ke1 4.Bb4+ Kd1 5.Rd8+ Kc1 6.Bd2+ Kb1 7.Rb8+ Qb2 8.Kf4 > -+ (-18.23) Depth: 14 00:01:31 32008kN >1...a1Q 2.Bc5+ Kf1 3.Rf8+ Ke1 4.Bb4+ Kd1 5.Rd8+ Kc1 6.Bd2+ Kb1 7.Kh3 c1Q 8.Bxc1 >e1Q 9.Rb8+ Kxc1 10.Rc8+ Kb1 11.Rb8+ Qb2 12.Kg4 > -+ (-19.23) Depth: 14 00:01:43 36065kN >1...a1Q 2.Bc5+ Kf1 3.Rf8+ Ke1 4.Bb4+ Kd1 5.Rd8+ Kc1 6.Bd2+ Kb1 7.Rb8+ Qb2 >8.Rxb2+ Kxb2 9.Kf2 e1Q+ 10.Kxe1 g1Q+ 11.Ke2 Qg3 12.Be3 Qf3+ 13.Kd3 c1Q 14.Kd4 >Qcxe3+ > -+ (-21.45) Depth: 14 00:02:06 44365kN >1...a1Q 2.Bc5+ Kf1 3.Rf8+ Ke1 4.Bb4+ Kd1 5.Rd8+ Kc1 6.Bd2+ Kb1 7.Rb8+ Qb2 >8.Rxb2+ Kxb2 9.Kh3 g1Q 10.Be3 e1Q 11.Bb6 > -+ (-21.85) Depth: 15 00:03:47 85043kN >1...a1Q 2.Bc5+ Kf1 3.Rf8+ Ke1 4.Bb4+ Kd1 5.Rd8+ Kc1 6.Bd2+ Kb1 7.Rb8+ Qb2 8.Kh3 >g1Q 9.Ra8 > -+ (-22.85) Depth: 15 00:04:19 96362kN >1...a1Q 2.Bc5+ Kf1 3.Rf8+ Ke1 4.Bb4+ Kd1 5.Rd8+ Kc1 6.Bd2+ Kb1 7.Rb8+ Qb2 >8.Rxb2+ Ka1 9.Kf2 e1B+ 10.Kxe1 g1R+ 11.Ke2 Rg2+ 12.Ke3 Rg3+ 13.Kd4 Rg2 > -+ (-22.90) Depth: 15 00:04:44 105277kN >1...e1Q+ 2.Bxe1 a1Q 3.Bf2+ Kf1 4.Rxc2 g1R+ 5.Kf4 Qa4+ 6.Ke5 Qxc2 7.Bg3 Rxg3 >8.Kf4 > -+ (-22.91) Depth: 15 00:06:02 134820kN >1...e1Q+ 2.Bxe1 Kf1 3.Bd2 g1Q+ 4.Kh3 a1Q 5.Rf8+ Ke2 6.Re8+ Kxd2 7.Kh4 > -+ (-27.85) Depth: 15 00:08:07 181588kN >1...e1Q+ 2.Bxe1 Kf1 3.Bf2 a1Q 4.Kg4 Kxf2 5.Rxc2+ Ke3 > -+ (-27.85) Depth: 15 00:08:41 198528kN >1...e1Q+ 2.Bxe1 Kf1 3.Bf2 a1Q 4.Kg4 Kxf2 5.Kg5 g1Q+ 6.Kh6 > -+ (-28.25) Depth: 16 00:10:48 244207kN >1...e1Q+ 2.Bxe1 Kf1 3.Bf2 a1Q 4.Kg4 Kxf2 5.Kg5 g1Q+ 6.Kh5 > -+ (-29.25) Depth: 16 00:11:43 264029kN >1...e1Q+ 2.Bxe1 Kf1 3.Bf2 a1Q 4.Kg4 Kxf2 5.Rf8+ Ke3 6.Re8+ Kd3 7.Kh5 g1Q 8.Rd8+ >Kc3 9.Kh4 c1Q 10.Rc8+ Kd3 11.Kh3 > -+ (-34.25) Depth: 16 00:12:19 276148kN > >(Blass, Tel-aviv 05.01.2002) > >Uri Yace solved the fail high with a score of mate in 14 for black 1...e1Q+ 2.Bxe1 a1Q 3.Bf2+ Kf1 4.Rxc2 Qe5+ 5.Kh4 Qe4+ 6.Kg5 Qxc2 7.Be3 g1Q+ 8.Bxg1 Kxg1 9.Kf6 Qe4 10.Kf7 Qe5 11.Kf8 Qc7 12.Kg8 Qe7 13.Kh8 Qf8+ 14.Kh7 Be4# -+ (-#14) Depth: 16 00:37:19 916270kN (Blass, Tel-aviv 05.01.2002) Uri
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