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Subject: Re: How long does your program take to avoid Qxc2

Author: John Stanback

Date: 14:09:02 03/31/00

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On March 31, 2000 at 16:23:24, Chessfun wrote:

>
>
>This position came up in my tourney.
>Nimzo to play played Qxc2?? and resigned 5 moves later.
>How long does your program take to avoid taking the pawn?.
>
>MCP 8 is in book with 15. either Bc1 or Qc1 since Qc1 leads to
>black thinking it is winning seems the best move. This Qc1 should
>be in every book as the best move in this variation.
>
>[D]r3kb1r/2q2ppp/p2p4/1p1PpP2/8/4Q3/PPP1N1PP/R4RK1 b kq - 0 17
>
>
>Thanks.

On a P2-300 Zarkov sees the score for Qxc2 drop after about 12
seconds, but the search goes bananas and it takes over 2 minutes
to find Be7.

00:01.0    37760  6>    99  Qxc2 b4 Be7 a3 O-O
00:01.1    42240  6     73  Qxc2 b4 Be7 Nc3 Qb2 Rab1 Qc2
00:01.2    43777  7>    73  Qxc2 b4 Be7 Nc3 Qb2 Rab1 Qc2
00:02.5    87808  7     71  Qxc2 Rac1 Qxb2 Qb6 Rd8 Qc6+ Rd7 Rc2 Qa3 Qc8+ Rd8
00:03.3   117346  8>    71  Qxc2 Rac1 Qxb2 Qb6 Rd8 Qc6+ Rd7 Rc2 Qa3 Qc8+ Rd8
00:09.6   352768  8     70  Qxc2 Rac1 Qxb2 Qb6 Rd8 Qc6+ Rd7 Qc8+ Ke7 Rc2 Qa3
00:10.7   388114  9>    70  Qxc2 Rac1 Qxb2 Qb6 Rd8 Qc6+ Rd7 Qc8+ Ke7 Rc2 Qa3
00:12.3   451072  9     12  Qxc2 Rac1 Qxb2 Qb6 Rd8 Qc6+ Rd7 Qc8+ Ke7 Rc2 Qa3
00:18.0   647680  9      0  Qxc2 Rac1 Qxb2 Qb6 Rd8 Qc6+ Rd7 Qc8+ Ke7 f6+ gxf6
02:08.8  4139264  9      6  Be7 c3 Qc4 Qf3 O-O <HT>
05:44.6 11025969 10>     6  Be7 c3 Qc4 Qf3 O-O <HT>

John



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