Author: Vincent Lejeune
Date: 02:09:11 12/07/05
Go up one level in this thread
On December 06, 2005 at 21:39:57, Will Singleton wrote: >On December 06, 2005 at 18:17:32, Vincent Lejeune wrote: > >>TogaII is known to sac the exchange more often than others engine. Rybka seems >>to do the same. The sac exchange in middle game is really hard to estimate, you >>often get a more active piece (B or N) instead of a blockes rook. Other engines >>have simpler estimation and simply decide to not give material ! >> >>Thanks, >>Vincent >> > >That seems to be right. This is a case where Fruit/Toga/Rybka play a move >quickly due to eval, whereas others will never play it. As the analysis below >clearly shows, those programs are obviously clones of Amateur, but their >programmers have cleverly avoided the first 13-14 plies of search due to >fail-low pruning and other secret techniques: > >Amateur 2.86: > >14 -5 9611 39966361 Qe2 a4 Rg4 Ra5 e4 a3 Rg3 >14 0 10863 44947113 Qd2 a4 Ra1 a3 Qc1 Qa7 Nb1 a2 Nc3 Qb6 Rb4 Na6 Ra4 > Nc7 Rxa8 Rxa8 Rxa2 Rxa2 Nxa2 Nxb5 >15 -4 17596 72251056 Qd2 a4 Ra1 Rc8 Ra3 f5 Qf2 Rc7 Rb4 Qb6 Qg3 f4 Qxg6 fxe3 > Nxa4 Rxa4 Rxa4 Nxa4 Rxa4 Qxb5 Qxd6 Rxc2 Qxe5 >15 21 19884 81607297 Rxc5 dxc5 Ne4 Qa7 d6 c4 Qd5 Qxe3 Kh2 Qa7 b6 Qxb6 > Qxf7 Kh8 Qxg6 Qb7 Rf7 >16 19 26508 108388508 Rxc5 dxc5 Ne4 c4 Qxc4 Rc8 Qb3 a4 Qd3 f5 Nf2 Rc5 c4 > Qc8 d6 Rxc4 Qd5 Kh8 Qxe5 What's the unit of the time ? 26508 = 26.508 sec or 265.08 sec ?
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