Author: Uri Blass
Date: 22:51:20 09/02/03
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On September 02, 2003 at 19:34:50, Slater Wold wrote: >On September 02, 2003 at 14:23:31, Uri Blass wrote: > >>I think that interesting positions is positions when there is no clear win for >>one side by many moves. >> >>1)Here is a position that did not happen in my correspondence game but could >>happen >> >>[D]3r1rk1/pp4pp/1n3p2/4pN2/7Q/b1P1B3/Pq3PPP/R4RK1 w - - 0 20 >> >>How much time does your program need to find Bh6 with a draw? > >Rebel 12.0 (q3) - P4 3.06Ghz - 200MB HTs > >00:00:00.2 -0.59 1 17 Bxb6 Qxb6 >00:00:00.2 0.01 1 77 Qh5 Qxc3 >00:00:00.2 -0.33 2 370 Qh5 h6 >00:00:00.2 -0.33 2 779 Rab1 >00:00:00.2 0.45 2 1037 Rab1 Qc2 Bxb6 axb6 >00:00:00.2 0.58 3 2894 Rab1 Qxa2 Bxb6 axb6 >00:00:00.2 0.67 4 11251 Rab1 Qe2 Bxb6 axb6 Rfe1 Qxa2 >00:00:00.2 0.67 4 31274 Bh6 >00:00:00.2 1.21 4 32849 Bh6 Qc2 Qg4 g6 Bxf8 >00:00:00.3 -0.21 5 47782 Bh6 Rd7 Nxg7 Rxg7 Bxg7 Kxg7 Qh5 Kg8 >00:00:00.3 0.50 5 60454 Rab1 Qxa2 Bxb6 axb6 Rxb6 Qf7 Rfb1 >00:00:00.4 0.64 5 112112 Qg4 g6 Bxb6 Qxb6 Qc4+ Kh8 >00:00:00.4 -0.10 6 147067 Qg4 g6 Rab1 Qxa2 Bxb6 axb6 Rxb6 Qd5 >00:00:00.4 0.26 6 169928 Rab1 Qxa2 Bxb6 axb6 Rxb6 Rf7 Rfb1 Qc2 >00:00:00.7 0.07 7 414375 Rab1 Qxa2 Bxb6 axb6 Ra1 Qb3 Rab1 Qxc3 >00:00:01.6 0.34 8 1133544 Rab1 Qc2 Bxb6 axb6 Qg4 g6 Nh6+ Kh8 >00:00:03.4 0.53 9 2779835 Rab1 Qe2 Bh6 Rf7 Bxg7 Rxg7 Nxg7 Kxg7 >00:00:03.5 0.62 9 2858321 Qg4 g6 Rab1 Qc2 Bxb6 axb6 Qc4+ Kh8 >00:00:05.6 0.52 10 4889928 Qg4 g6 Rab1 Qxc3 Rb3 Qa5 Bxb6 axb6 >00:00:13.0 -0.13 11 11893522 Qg4 g6 Rab1 Qxa2 Bxb6 axb6 Rxb6 Kh8 >00:00:20.8 0.22 11 18906143 Rab1 Qe2 h3 Rf7 Bxb6 axb6 Rbe1 Qd2 >00:01:03.1 0.41 12 58733576 Rab1 Qe2 Rfe1 Qc4 Qxc4+ Nxc4 Rxb7 Rf7 >00:01:21.7 0.41 12 77008033 Bh6 >00:01:27.5 0.69 12 81518907 Bh6 Rd7 Qg4 Rff7 Rad1 Bf8 Bc1 >00:02:06.7 0.69 13 110129864 Bh6 Rd7 Qg4 Rff7 Rad1 Bf8 Bc1 >00:06:05.8 0.75 14 286909260 Bh6 Rd7 Rad1 Rxd1 Rxd1 Qe2 Rf1 Qc4 > >>Here is a position from one of my correspondence games(my opponet resigned after >>44...Rc1+). >> >> >>2)It may be interesting to see how much time programs need to find 26.Rh3(I >>believe that 26.Rxh5 was the losing move of white inspite of the fact that >>white's position is not good even after 26.Rh3) >> >>I suspect that programs may need at least some hours. >> >>[D]5krr/1b2qp2/pp1ppp2/2n2Pbp/P1RNP2R/2N2BP1/2P1Q2P/7K w - - 0 26 > >q3 didn't get this in ~15 minutes. > >00:10:08.9 -0.40 15 510937279 fxe6 fxe6 fxe6? I did not think that it can be good because of Bxh4 I thought that the only alternative that programs may consider is Rxh5 The main line suggest that q3 even does not expect Bxh4 I analyzed the position after fxe6 Bxh4 for some minutes with Fritz8 and saw nothing for white(Nd5 -1.41/13,-1.56/14,-1.56/15) Uri Uri
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