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Subject: Re: Mate?

Author: John Merlino

Date: 20:34:22 06/24/03

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On June 24, 2003 at 21:29:45, Aaron Gordon wrote:

>Here is a game I found off of http://www.freechess.org/Ladder
>
>Here is the mate line I came up with..
>
>23.Nc7+ Ka7 24.Bxa6 bxa6 25.Rxc6 Bxc6 26.Qa5 Qd4 57.Qxa6+ Kb8 28.Qxc6 Qxf4
>29.Na6+ Ka7 30.Nc5 Rd7 31.Re3 Qxe3 32.Qxd7+ Kb6 33.Na4+ Ka5 34.fxe3 Rb8
>35.a3 g3 36.b4+ Rxb4 37.Qa7+ Kb5 38.Qb7+ Kc4 39.Qxb4+ Kd3 39.Qxb4+ Kd3
>40.Qd4+ Kc2 41.Qc3+ Kd1 42.Kf1 gxh2 43.Nb2#

The initial position:
[D]k2r3r/1p1b1pq1/p1n1p2n/1N1p4/5Bpp/3B4/PP1Q1PPP/2R1R1K1 w - - 0 23

There seems to be only two "issues" with your line:
1) Chessmaster 9000 (and probably most other strong programs), depending on the
time control and the hardware, might let you keep the pawn after 24.Bxa6 and
play something like 24...g3, which is also lost. Human players, on the other
hand....

But there is a forced mate in there as well, so you can have some more fun with
your analysis! For example, after 24...g3, Chessmaster 9000 says there is a
forced mate in 15 moves (or less). I leave it as an exercise to the author. :-)

The position in question:

[D]3r3r/kpNb1pq1/B1n1p2n/3p4/5Bpp/8/PP1Q1PPP/2R1R1K1 b - - 0 24

2) White can improve on your line by one move with 38.Qc5+! Ka6 (38...Kxa4
39.Qxb4#) 39.Qxb4 Ka7 40.Nc5 gxh2+ 41.Kh1 Ka8 42.Qb7#

Very entertaining game!

jm



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