Author: Sune Fischer
Date: 13:55:17 04/21/04
Go up one level in this thread
On April 21, 2004 at 16:44:15, Gerd Isenberg wrote: >On April 21, 2004 at 16:11:27, Uri Blass wrote: > >>Here is another case when I believe that movei blundered by playing Ba7 when >>after c5 the black bishop is a joke. >> >>I am surprised to see that not only movei has no sense of humor but even the >>ssdf leader Shredder7.04(A1000, 64 mbytes hash) seems not to have it and cannot >>find the only logical move(Bd4) even after a long time(the second possibility is >>that I understand nothing about the position and the fact that the black bishop >>is out of the game is not important). >> >>Resp 0.19 - Movei 0.08.178d >>[D]1k1r3r/2p1n3/p1pq1p2/1pb1p3/1PP1P1pp/P2P3P/2Q1NPP1/R1BR2K1 b - b3 0 1 >> > >Same for IsiChess MMX, likes Ba7 too all the time. >I thought i recently had implemented some trapped bishob code ;-) >Or was it already the AMD64 XMM-version which takes some more time? > >I guess there is probably wrong king safety compensation for the trapped bishop. >May be the closing "c5" makes the black king safer, due to less levers but more >rams on king related files. Other black pieces and the advanced pawns may be >ready for a king side attack. Interesting position! > >Gerd I think the code works :) 1 469 1 53 1...Nd5 1 445 1 72 1...Rdf8 1 383 1 95 1...Rdg8 1 375 1 224 1...Bxf2+ 2.Kxf2 1 371 1 369 1...Bxb4 1 25 1 397 1...Bd4 2 25 1 1117 1...Bd4 2.Nxd4 3 25 1 1593 1...Bd4 2.Nxd4 Qxd4 4 42 5 4237 1...Bd4 2.Nxd4 Qxd4 3.Bb2 5 74 8 13546 1...Bd4 2.Nxd4 Qxd4 3.Be3 Qd7 6 98 11 32942 1...Bd4 2.Nxd4 Qxd4 3.Be3 Qd7 4.d4 7 98 18 82765 1...Bd4 2.Nxd4 Qxd4 3.Bb2 Qd7 4.d4 exd4 8 81 33 208399 1...Bd4 2.Nxd4 exd4 3.hxg4 h3 4.gxh3 Rxh3 5.Bb2 Qh2+ 6.Kf1 9 75 60 430252 1...Bd4 2.Nxd4 exd4 3.hxg4 h3 4.gxh3 Rxh3 5.Kf1 Rg8 6.c5 10 61 135 1102037 1...Bd4 2.Nxd4 Qxd4 3.Be3 Qd7 4.d4 gxh3 5.cxb5 cxb5 6.dxe5 11 56 282 2333824 1...Bd4 2.Nxd4 exd4 3.hxg4 h3 4.c5 12 58 608 5088618 1...Bd4 2.Nxd4 exd4 3.hxg4 h3 4.c5 Qe6 13 63 1233 10851144 1...Bd4 2.Nxd4 exd4 3.hxg4 h3 4.c5 Qe6 5.gxh3 Rxh3 6.f3 Qf7 7.Kg2 Rdh8 14 70 6857 55085739 1...Bd4 2.Nxd4 exd4 3.hxg4 h3 4.c5 Qd7 5.gxh3 Rxh3 6.Qe2 Rg8 7.f3 Rh5 But you are right there is something else going on over on the white kingside. If I force Ba7 the score on c5 starts to drop: 1 234 0 754 2.c5 2 228 0 857 2.c5 Qe6 3 208 0 1341 2.c5 Qe6 3.Qa2 4 211 0 2504 2.c5 Qd7 3.d4 gxh3 5 184 3 6823 2.c5 Qd7 3.hxg4 a5 4.g5 6 184 6 20139 2.c5 Qd7 3.hxg4 a5 4.g5 axb4 7 163 13 71345 2.c5 Qe6 3.hxg4 a5 4.g5 axb4 5.gxf6 8 154 25 188141 2.c5 Qe6 3.hxg4 a5 4.g5 axb4 5.gxf6 b3 9 111 81 656987 2.c5 Qe6 3.hxg4 a5 4.d4 axb4 5.axb4 Qxg4 6.Bb2 10 104 247 2141619 2.c5 Qe6 3.hxg4 Qxg4 4.f3 Qh5 5.d4 a5 6.f4 axb4 11 72 786 6918271 2.c5 Qd7 3.Kh2 a5 4.bxa5 gxh3 5.gxh3 Ka8 6.a4 Rhg8 7.axb5 11 73 1372 11915791 2.hxg4 11 85 2061 17836812 2.hxg4 Qe6 3.g5 h3 4.c5 a5 5.gxh3 Qxh3 6.Ng3 Qh2+ 7.Kf1 axb4 12 69 3134 27100571 2.hxg4 Qe6 3.c5 Qxg4 4.f3 Qg7 5.f4 a5 6.Kf2 axb4 7.axb4 Qg4 13 63 7731 66687997 2.hxg4 Qe6 3.c5 Qxg4 4.f3 Qg6 5.Kf2 a5 6.bxa5 Rhg8 7.Rg1 Rd6 13 64 8845 75640779 2.c5 -S.
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