Author: Joachim Rang
Date: 00:53:49 12/21/04
Go up one level in this thread
On December 20, 2004 at 16:32:24, Jouni Uski wrote: >Shredder 8 reaches quite stunning averaga search dept. E.g. with only 15 >second/move average with Pentium 2400 and 128MB hash it averages 15,2 ply! For >comparison Fritz Bilbao and Gandalf 6 reach both same 12,7 ply. No wonder >Shredder beats them 13 - 7 and 14 - 6. Of course 2,5 ply is a lot difference! >Is there any amateur or pro engine, which can equal Shredder in depth - Junior's >half plys can be forgotten. > >Jouni Here is a 1-minute search on my Athlon XP@1540 MHz, with Shredder 7.04 default and Fruit X with aggressive delta, futility and history pruning. Both engines were analysing together under Arena. Compare the depth! FEN: r1r3k1/p2Q1pp1/Bp1bb2p/3p4/3P4/2P2n1P/P2BRPP1/4R1K1 w - - 0 24 Fruit2.0beta1 (fude30his1-100): 1/4 00:00 6 0 -0,08 24.gxf3 Bxd7 25.Bxc8 Rxc8 2/7 00:00 104 0 -0,08 24.gxf3 Bxd7 25.Bxc8 Rxc8 3/7 00:00 248 0 -0,08 24.gxf3 Bxd7 25.Bxc8 Rxc8 4/8 00:00 629 0 -0,08 24.gxf3 Bxd7 25.Bxc8 Rxc8 5/9 00:00 1.858 0 +0,09 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Kg2 6/12 00:00 5.175 0 +0,04 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Kg2 g5 7/12 00:00 10.393 0 -0,09 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Kg2 Bb5 27.Re3 8/14 00:00 22.771 0 -0,10 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Kg2 Bb5 27.Re3 Kh7 9/16 00:00 63.615 0 -0,13 24.gxf3 Bxd7 25.Bb7 Bxh3 26.Bxd5 Rab8 27.c4 Bf5 28.Kg2 10/17 00:00 124.015 0 -0,33 24.gxf3 Bxd7 25.Bb7 Rab8 26.Bxd5 Bxh3 27.c4 Bf5 28.Kg2 g5 11/18 00:00 207.836 0 -0,19 24.gxf3 Bxd7 25.Bb7 Rab8 26.Bxd5 Bxh3 27.c4 Bf5 28.Re3 g5 29.Rb3 12/21 00:01 406.412 0 -0,26 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Kg2 Bb5 27.Re3 Bf4 28.Re8+ Rxe8 29.Rxe8+ Bxe8 30.Bxf4 Bb5 13/21 00:02 606.147 0 -0,26 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Kg2 Bb5 27.Re3 Bf4 28.Re8+ Rxe8 29.Rxe8+ Bxe8 30.Bxf4 Bb5 31.h4 14/22 00:04 1.093.507 0 -0,28 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Kg2 Bb5 27.Re5 Bxe5 28.Rxe5 Rd8 29.Re7 Rd7 30.Re8+ Kh7 31.Bf4 Kg6 15/23 00:07 2.016.853 265.162 -0,31 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Kg2 Bb5 27.Re3 Bf4 28.Re8+ Rxe8 29.Rxe8+ Bxe8 30.Bxf4 Bb5 31.Kg3 Kf8 32.Kg4 Bd7+ 33.Kg3 16/24 00:13 3.548.066 268.813 -0,22 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Re3 Bxh3 27.Re8+ Kh7 28.Rxc8 Bxc8 29.Re8 Be6 30.Ra8 a5 31.Ra6 Bc7 32.Ra7 17/26 00:26 6.825.881 260.277 -0,37 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Re3 Bxh3 27.Re8+ Kh7 28.Rxc8 Bxc8 29.Re8 Be6 30.Ra8 a5 31.Ra6 Bc7 32.Ra7 Bd6 18/30 00:49 13.086.107 264.290 -0,13 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Re3 Kf8 27.Kg2 Bf4 28.R3e2 Bxd2 29.Rxd2 Rxc3 30.Rde2 Be6 31.Re3 Rc2 32.R3e2 Rc7 Best move: gxf3, Value: -0,13, Depth: 19/30, Time: 01:01,363, 16.270.000 Nodes, 266.468 N/sec Shredder 7.04: 1/2- 00:00 2 22 +6,23 24.gxf3 Bxd7 25.Bxc8 1/3- 00:00 5 55 +5,60 24.gxf3 Bxd7 25.Bxc8 1/4 00:00 10 111 +1,46 24.gxf3 Bxd7 25.Bxc8 Rxc8 2/3 00:00 24 266 +1,46 24.gxf3 Bxd7 25.Bxc8 Rxc8 3/4 00:00 63 700 +1,46 24.gxf3 Bxd7 25.Bxc8 Rxc8 4/6 00:00 213 2.366 +1,46 24.gxf3 Bxd7 25.Bxc8 Rxc8 5/9 00:00 722 7.220 +1,48 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Kg2 6/8 00:00 1.378 13.780 +1,57 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.h4 Bh3 7/10 00:00 3.376 25.969 +1,49 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.h4 a6 27.Re3 8/12 00:00 9.088 53.146 +1,47 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.h4 a5 27.Re3 b5 9/13- 00:00 19.069 86.285 +1,22 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Kg2 g5 27.Re3 a5 28.Re4 9/15- 00:00 27.826 95.621 +0,72 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Re3 Bxh3 27.c4 9/15 00:00 42.048 113.336 +0,29 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Kg2 Bb5 27.c4 dxc4 10/15 00:01 73.028 134.987 +0,18 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Bc1 Rxc3 27.Kg2 g5 28.Bb2 Rd3 11/16 00:01 136.334 151.146 +0,24 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.h4 Bb5 27.c4 dxc4 28.Re3 Bc6 12/19 00:02 293.743 162.919 +0,02 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Bc1 Rxc3 27.Kg2 g5 28.Bb2 Rd3 29.Re3 Rd2 13/18 00:03 589.582 176.257 +0,12 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Kg2 Bb5 27.c4 Rxc4 28.Be3 Bb4 29.Rb1 g5 14/23 00:06 1.145.720 176.536 +0,01 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Bc1 Rxc3 27.Kg2 g5 28.Bb2 Rd3 29.f4 15/23+ 00:09 1.643.675 178.582 +0,26 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Re3 Bf4 27.Re7 Bxd2 28.R1e2 Bxh3 29.Rxd2 Rxc3 30.Rxa7 Rxf3 31.Rb2 15/23 00:11 2.054.885 180.617 +0,26 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Re3 Bf4 27.Re7 Bxd2 28.R1e2 Bxh3 29.Rxd2 Rxc3 30.Rxa7 Rxf3 31.Rb2 16/21 00:19 3.465.288 182.498 +0,40 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Re3 Bxh3 27.Re8+ Kh7 28.Rxc8 Bxc8 29.Re8 Be6 30.Ra8 a5 31.Rd8 Be7 17/23 00:36 6.503.566 181.907 +0,46 24.gxf3 Bxd7 25.Bxc8 Rxc8 26.Re3 Bxh3 27.Re8+ Kh7 28.Rxc8 Bxc8 29.Re8 Be6 30.Rd8 Ba3 31.Ra8 a5 32.Rb8 Best move: gxf3, Value: +0,46, Depth: 18/18, Time: 01:01,353, 11.329.758 Nodes, 186.258 N/sec Strange enough Shredder is still stronger than Fruit. Perhaps we should prune even more aggressive? ;-) regards Joachim
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