Author: Dann Corbit
Date: 17:03:19 05/27/99
Go up one level in this thread
On May 27, 1999 at 19:43:43, James Robertson wrote:
>One of my friends tried my program on this 'Mate in 2' from John Thursby's 75
>mate in 2 problems.
>
>FEN 8/8/3PQ3/2p2r2/2N2R2/2k2N2/3RK3/8/ w - -
>
>My program didn't see it, supplying a mate in 3 line (my email program crashed
>and I lost the message.) Crafty also gave a mate in 3 line, 1. Qe3+ Kb4 2. Rb2+
>Ka4 3. Qa8#.
>
>I responded with this, and he said no! It is still mate in 2, and supplied this
>line: 1.Na5! {threatens Rc4# or Qe3# or Qc4# or Qb3#} 1 ... Rxf4 2. Qb3#
>
>I have not had time to check on it... is it mate in 3 or 2?
>
>James
>
>P.S. He also supplied this funny mate in 2 links:
>http://misc.traveller.com/chess/graphics/cake.htm
>http://www.hsv.tis.net/chess/graphics/boi.htm
Jens Schweikhardt's mate solver says this:
D:\chess>chess < foo.epd
+-A--B--C--D--E--F--G--H-+
8 | ::: ::: ::: :::| 8
7 |::: ::: ::: ::: | 7
6 | ::: :P: Q ::: :::| 6
5 |::: :p: ::: r ::: | 5
4 | ::: N ::: :R: :::| 4
3 |::: :k: ::: N ::: | 3
2 | ::: :R: K ::: :::| 2
1 |::: ::: ::: ::: | 1
+-A--B--C--D--E--F--G--H-+
To move: white
Mate in: 2
Solution: 0.01 45/45
1. Nc4-a5 Pc5-c4 2. Rf4xc4#
Rf5xf4 2. Qe6-b3#
Rf5-d5 2. Rf4-c4#
Rf5-e5+ 2. Qe6xe5#
Rf5-g5 2. Rf4-c4#
Rf5-h5 2. Rf4-c4#
Rf5-f6 2. Rf4-c4#
Rf5-f7 2. Rf4-c4#
Rf5-f8 2. Rf4-c4#
max moves side to move = 54
max moves side to answer = 12
max number allocations = 14
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Last modified: Thu, 15 Apr 21 08:11:13 -0700
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