Author: Eelco de Groot
Date: 09:01:46 01/06/06
Go up one level in this thread
On January 06, 2006 at 10:54:27, Eelco de Groot wrote: >In CSS-Forum Christoph Fieberg reports results with Rybka on Swiss Test 2 at a >long time control: > >http://f23.parsimony.net/forum50826/messages/139718.htm > >Rybka can solve 60 out of 64! Not bad. The four remaining positions 7, 12, 40 >and 49 are maybe not clear, I intend to test them a little more. In Position 7 >the move to avoid Bxc3 seems to lose but other moves also get a drop in score >over time. It is easier to post a diagram here, I thought I'd post some results >here first. First number 7, rest will maybe follow later. I did a four best >moves analysis with Gambit Fruit 1.0 Beta 4bx, Bxc3+ comes in second but Be7 not >much better: > >am Bxc3+; hmvc 0; fmvc 19; c0 "?"; id "SwissTest2_Nr.07 - Aristarch45-List512"; > >[D] r1bq1rk1/p4pp1/5n1p/n2pNP2/1bpP3B/2N1PQ2/1PB3PP/2R1K2R b K - 0 1 > >01:31:01.0 -1,65 18 1845764238 Be7 Bxf6 Bxf6 Nxd5 Bxe5 dxe5 Bb7 Rd1 Qh4+ g3 Qh3 >Qe4 Kh8 e6 Rfe8 Kf2 Rab8 f6 g6 e7 Bc6 Qe5 >01:31:01.0 -1,75 18 2879197170 Bxc3+ bxc3 Nb3 Rd1 Qb6 O-O Rd8 Qg3 Nh5 Qh3 Nf6 >Rb1 Rb8 Qg3 Nh5 Qf3 Nf6 Kh1 Qd6 Qg3 >01:31:01.0 -1,79 18 2139520513 Qb6 O-O Bxc3 bxc3 Nb3 Rcd1 Bb7 Rb1 Ba6 Qg3 Bc8 e4 >Nxd4 cxd4 Qxd4+ Kh1 Nh5 Qg4 Qxe5 Qxh5 dxe4 >01:31:01.0 -1,89 18 3337609714 Qd6 O-O Bxc3 bxc3 Nb3 Rcd1 Bb7 Nxc4 dxc4 Qxb7 Qd5 >Qa6 Rfb8 Rf4 Rb6 Qa4 Kh8 e4 Qd6 e5 > >Athlon 2009 MHz, 200 MB HT > At nineteen ply, Bxc3+ is in first again! So this position seems unclear for an an "avoid move" test. Rybka probably chose the right move afer all. On shorter timecontrols, -the test is intended for a one minute per move test, at least that is how I used it-, which move gives best chances may be not so clear. But that does not make this the best possible testmove. 03:11:01.6 -1,70 19 1070528192 Bxc3+ bxc3 Nb3 Rd1 Qb6 O-O Rd8 Qg3 Nh5 Qh3 Nf6 Rb1 Rb8 Qg3 Ba6 e4 dxe4 Rfe1 Kf8 Bxe4 Rxd4 cxd4 Qxd4+ Kh1 Nxe4 03:11:01.6 -1,79 19 1585142163 Be7 Bxf6 Bxf6 Nxd5 Bxe5 dxe5 Bb7 Rd1 Qh4+ g3 Qh3 Qe4 Kh8 e6 Rfe8 f6 g6 e7 Nb3 Qxc4 Qg2 Rf1 Ba6 03:11:01.7 -1,87 19 2163812257 Qb6 O-O Bxc3 bxc3 Nb3 Rcd1 Rb8 Rf2 Rd8 Qf4 Re8 e4 Bb7 exd5 Bxd5 Bxf6 Qxf6 Nd7 Qd8 Nxb8 Qxb8 Qxb8 Rxb8 f6 g6 03:11:01.7 -1,98 19 2826541678 Qd6 O-O Bxc3 bxc3 Rb8 Bxf6 Qxf6 Qxd5 Nb3 Rce1 Bb7 Qd7 Rfc8 Qa4 Bc6 Qa3 Rb7 Nxc4 Bd5 Bxb3 Bxc4 Bxc4 Rxc4
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