Author: Peter McKenzie
Date: 21:01:10 01/29/00
Go up one level in this thread
On January 29, 2000 at 22:49:51, James Robertson wrote: >On January 29, 2000 at 22:04:03, Jon Dart wrote: > >>On the 1st position. Arasan's score goes negative at ply 11, >>but not by much. I'm not sure if there is a defense there >>or maybe all the checks and extensions are just pushing the >>pain off the horizon (probably the latter). > >On my P233 with a 4MB hash table, Insomniac's score drops to 0 after 30 seconds. >I didn't wait to see how long it would take to go negative. > >> >>On the 2nd position, it likes Rxg7+ but only gives a score of +0.88. >>Something is wacky if you were getting +2. > >I agree. Insomniac prefers Rxb1. The score is nowhere near even one pawn from >the eigth ply on. Perhaps these are positions where Vincent's beloved checks in >qsearch would help? :) > >Depth Score Time Nodes PV > 1 51 0 50 Rxb1 Rxb1 > 2 51 50 270 Rxb1 Rxb1 > 3 61 50 743 Rxb1 Rxb1 f4 > 4 62 50 4279 Rxb1 Rxb1 f4 Be4 > 5> 92 160 11376 Rxg7+ > 5 128 220 16249 Rxg7+ Kb6 Rb7+ Ka5 b6+ Ka4 a7 Bg3+ Kxg3 > 6 138 1040 95989 Rxg7+ Bd7 Rgxd7+ Ka8 Rd8+ Bb8 R5d7 Rxb5 Bxb5 >Qxb5 > 7 119 1590 147646 Rxg7+ Bd7 Rgxd7+ Ka8 Rd8+ Bb8 R5d7 Qh1 a7 Qh2+ >Ke1 > 8 51 8340 823729 Rxg7+ Kb6 Rb7+ Ka5 Rxe5 Qh1 Rxf5 Qh2+ Ke3 Qg1+ >Kd2 Qd4+ Bd3 Rb2+ Kc1 Qxd3 Kxb2 Qxf5 > 9 44 13510 1357694 Rxg7+ Kb6 Rb7+ Ka5 b6+ Ka4 Rxe5 Bc8 Re8 Bxb7 >axb7 Rxb6 Ra8+ Kb3 b8=Q Rxb8 Rxb8+ My program only completed 9ply in this positon during the tournament. I guess it saw this 9ply line of yours and realised that black is busted. >10 19 29600 3007365 Rxg7+ Kb6 Rb7+ Ka5 b6+ Ka4 Rxe5 Qh1 Rxf5 Qh2+ >Ke1 Qg1+ Kd2 Qd4+ Bd3 Rb2+ Kc1 Qc3+ Kd1 Qxd3+ >11> 27 101440 9695956 Rxb1 Rxb1 f4 Be6 Rd8 Bxf4 Re8 Bxh3 Re7+ Kb6 >Rb7+ Kc5 Rxg7 >11 27 111110 10848841 Rxb1 Rxb1 f4 Be6 Rd8 Bxf4 Re8 Bxh3 Re7+ Kb6 >Rb7+ Kc5 Rxg7 >Extensions: 695609 check, 1421 mate, 25474 recapture. impressive stuff > >James
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