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Subject: Re: Tough problems from "Chess IQ" - can you solve them in a reasonable time

Author: Simon Finn

Date: 12:27:58 10/25/01

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On October 24, 2001 at 16:31:14, Dann Corbit wrote:

>Each of these 9 problems is unsolved on Crafty or Yace on my machine in one
>minute.  Does your program solve any of them, and if so, what is the score that
>it finds?
>
>[D]r5k1/1p3pbp/2q1p1p1/p1p1P3/n1P5/P1B2N1P/1P2QPP1/3R2K1 w - - acd 13; acn
>32342817; acs 60; bm Bxa5; ce 2; id "IQ.968"; pv Qc2 Nxc3 Qxc3 Qc7 Qe3 a4 Rd3
>Rc8 Qg5 Re8 Rd6 Bf8 Rd3 Bg7;

I've seen this posiion discussed here before.

Wasn't 1. Bxa5 discredited as a winning attempt?

1. Bxa5 Rxa5 2. Rd8+ Bf8 3. Qd2 Qc7 4. Ng5

4...Ra6 5. Ne4 Kg7 6. Nf6 Qxe5 7. Ng4 Qh5
8. Rxf8 Kxf8 9. Qd8+ Kg7 10. Qf6+ Kf8 11. Qd8+ =

4...Qxe5 5. Qxa5 Qxg5 6. Qa8 Qc1+ 7. Kh2 Qf4+ 8. Kg1 Qc1+ =

Am I missing something?

If not, of the 9 difficult test positions, 3 are broken and 1
is questionable. I believe that - with more time - Crafty
solves the remaining 5 positions.

Simon





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