Author: Uri Blass
Date: 09:35:43 11/10/03
Go up one level in this thread
On November 10, 2003 at 10:51:23, Vincent Lejeune wrote: >On November 10, 2003 at 10:43:35, Vincent Lejeune wrote: > >>On November 09, 2003 at 20:57:35, Cliff Sears wrote: >> >>>Interesting position on how engines can look much deeper today. >>> >>>This position was from a game by >>>Novag Monster Y vs.Daniel King in 1985 (from his book Kasparov v Deeper Blue) >>> >>> >>>1q3bk1/R4pp1/5r2/5Q1p/1p4n1/5BP1/1PP4P/6BK w - - 0 1 >>> >>>Many engines still byte on this early in their analysis but generally see the >>>correct position after D9 >> >>subsidiary question : how much time to find better than 2.5 advantage for black >>after Qxh5? ? >> >>[d]1q3bk1/R4pp1/5r2/7Q/1p4n1/5BP1/1PP4P/6BK b - - 0 1 > >CM 9000 SKR + ss=16 : 5m30s > >AMD Barton 2800+ > >Time Depth Score Positions Moves >0:00 1/4 0.75 4446 1...Rxf3 2.Qxg4 Rf1 3.Qd7 Qe5 >0:00 1/5 0.99 16121 1...Rxf3 2.Qxg4 Rf1 3.Qd4 Bd6 4.Rd7 >0:00 1/6 0.54 57795 1...Rxf3 2.Qxg4 Rf1 3.Qd4 Bd6 4.c3 > bxc3 5.bxc3 >0:00 1/7 0.73 92214 1...Rxf3 2.Qxg4 Rf1 3.Qd4 Qc8 4.c4 > bxc3ep 5.Qxc3 >0:00 1/8 -0.11 201179 1...Rxf3 2.Qxg4 Rf1 3.Qd4 Qc8 4.Rd7 > Qxc2 5.Qd3 Qf2 >0:02 1/9 -0.46 619397 1...Rxf3 2.Qxg4 Rf1 3.Qd4 Qe8 4.Ra5 > Qc6+ 5.Rd5 Qxc2 6.Qd3 Qf2 >0:04 1/10 -0.63 1356353 1...Rxf3 2.Qxg4 Rf1 3.Qd4 Qe8 4.h3 > Qc6+ 5.Kh2 Qxc2+ 6.Kh1 Rd1 7.Qf4 >0:11 1/11 -1.03 3595586 1...Rxf3 2.Qxg4 Rf1 3.Qd4 Qb5 4.Rc7 > Qf5 5.Kg2 Qf3+ 6.Kh3 Re1 7.Bf2 > Re2 8.Bg1 Bd6 >0:27 1/12 -1.23 8586351 1...Rxf3 2.Qxg4 Rf1 3.Qd4 Qb5 4.Rc7 > Qf5 5.Qd2 Bc5 6.Rxc5 Qxc5 7.Qd8+ > Kh7 8.Qh4+ Kg6 9.Qe4+ Qf5 10.Qc6+ > f6 11.Qg2 Qf3 >1:33 1/13 -1.95 28980302 1...Rxf3 2.Qxg4 Rf1 3.Qd4 Qb5 4.Rc7 > Qf5 5.Qd2 Bc5 6.Rxc5 Qxc5 7.Qd8+ > Qf8 8.Qd5 Qc8 9.c4 bxc3ep 10.bxc3 > Qxc3 11.Qd8+ Kh7 >5:30 1/14 -3.13 102970765 1...Rxf3 2.Qxg4 Rf1 3.Qd4 Qc8 4.Kg2 > Rxg1+ 5.Qxg1 Bc5 6.Qe1 Qc6+ 7.Kh3 > Bxa7 8.Qxb4 Qxc2 9.Qe7 Qf5+ 10.g4 > Qf3+ 11.Kh4 I think thatthe question should be how much time to find 3...Qc8 evaluation can be different for different engines Here is analysis of latest movei with 64 mbytes hash on A1000 when it did not use 100% of the cpu. Almost 20 minutes to find Qc8 and >2.5 score 12 105 4713 9855726 f6f3 h5g4 f3f1 g4d4 b8b5 a7c7 b5f5 d4d2 f1d1 d2 g8h7 c7c5 f5c5 12 105 7616 14287361 f6f3 h5g4 f3f1 g4d4 b8b5 a7c7 b5f5 d4d2 f1d1 d 8 g8h7 c7c5 f5c5 13 261 110501 206579960 f6f3 h5g4 f3f1 g4d4 b8c8 h1g2 f1g1 d4g1 f8c g2h3 c5a7 e1b4 c6c2 b2b3 13 261 114733 215556588 f6f3 h5g4 f3f1 g4d4 b8c8 h1g2 f1g1 d4g1 f8c g2h3 c5a7 e1b4 c6c2 b2b3 Uri
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