Author: Martin Giepmans
Date: 14:41:44 11/26/02
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On November 26, 2002 at 17:21:28, David Rasmussen wrote: >[D]r4rk1/1p1n1pp1/1bq1bn1p/2pp4/p1P1N1P1/1N1PB2B/PPQ2P1P/R4RK1 w - - 3 19 > >This position was one the leaf positions during search of the previously posted >position, that produced the most qnodes. Searching this position is even worse: > >time nodes depth score pv >00:00:43.33 17Mn 01/01/17 +0.194 19. cxd5 axb3 20. dxc6 bxc2 > 21. cxd7 Rxa2 22. Bxc5 >00:00:43.36 17Mn 01/02/17 --------------------------------------------------- > > > Time used: 00:00:43.36 > nps: 407748 nodes: 17684031 Q-nodes: 17683987 (99%) > move order: 66% > hash probes: 1 hash hits: 0 (0%) hash usage: 0% > pawn hash probes: 17684030 pawn hash hits: 17683997 (99%) > EGTB probes: 0 EGTB hits: 0 (0%) > >I takes 43 seconds to finish ply 1! >As it can be seen from the output, there aren't any extensions going on here. >But the longest q-search line is to ply 17! >There's definitely something wrong here... :) > >/David Yes, must be a bug. With pruning in Qsearch disabled I need 77854 nodes to finish depth 5 .... Martin
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