Author: Christophe Theron
Date: 11:20:04 09/27/01
Go up one level in this thread
On September 27, 2001 at 13:07:25, José Antônio Fabiano Mendes wrote:
> Geller-Vasilyev,1964 (simul)
> [D]r1bq1rk1/5pbp/pB1p1np1/3Pp3/4P3/2p2P2/PP1Q2PP/1KNR1B1R w
> And here Geller played 15.Qe3 and after 15...Rb8!! 16.Bxd8 Rxb2+ 17.Ka1 c2!!
> 18.Kxb2 cxdN+ 19.Kb1 Nxe3 got the worse of it.
> The challenge to chess programs is to find 15.Qf2!
> Source ==> http://chess-sector.odessa.ua/geller_e.htm
Tiger 14.6 running on K6-2 450MHz, 6MB hash table, finds Qf2 in 0.6 second:
00:00:00.4 0,36 7 34561 Qe3 Qe7 Qxc3 Rb8 Bc7 Rb7
00:00:00.4 -2,16 7 45358 Qe3 Rb8 Bxd8 Rxb2+ Ka1 c2 Qb3 Rxb3 Rd2
00:00:00.1 -1,68 7 51838 Bxd8 cxd2 Be7 Re8 Bxd6 Bf8 Bc7 dxc1Q+ Rxc1
00:00:00.6 -0,76 7 71429 Qf2 Qe7 Rd3 cxb2 Qxb2 Rb8 Rb3 Bb7 Bc4
00:00:01.4 -0,64 8 103498 Qf2 Qe7 Nb3 cxb2 Na5 Qe8 Qxb2 Nd7 Nc6 Nxb6 Qxb6
00:00:01.5 -0,64 9 162732 Qf2 Qe7 Nb3 Bh6 Na5 Bb7 Nc6 Bxc6 dxc6
00:00:05.3 -0,54 10 548639 Qf2 Qd7 b3 Rb8 Rd3 Qb7 Ba5 Bd7 Rxc3 Ba4
00:00:09.4 -0,40 11 894583 Qf2 Qd7 b3 Bb7 Bc4 Rab8 Ne2 Rfc8 Nxc3 Bh6 Ba7
00:00:15.7 -0,42 12 1571661 Qf2 Qd7 b3 Bb7 Bc4 a5 Ne2 a4 Nxc3 axb3 axb3 Rfb8 b4
00:00:39.7 -0,42 13 4036396 Qf2 Qd7 b3 Bb7 Bc4 a5 Ne2 a4 Nxc3 axb3 axb3 Rfb8 b4
Bh6
00:01:50.0 -0,44 14 11122839 Qf2 Qd7 b3 Bb7 Qc2 Rfc8 Bc4 a5 Qxc3 a4
Christophe
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