Chess position

[cms271828]

I just tried a chess puzzle (number 10) from http://www.chess-poster.com/chess_probl ... e_in_9.htm

Its supposed to be a mate in 9 (17 plies) with key e3,
but my chess engine solves it in 8 (15 plies) with the key Bh2

I was curious to which solution is best, since if it is a mate in 9, then my engine has a bug.

I don't have any engine to test it with, so I thought I would try here.

Thanks

[MartinBryant]

Colossus also believes that Bh2 is mate in 8
(presumably what your program found?)

[tvrzsky]

[d]rn6/rp1p4/pPkP1R2/K7/2P5/2pP4/2P1P3/6B1 w - - 0 1

1.Bh2 Kc5 2.Rf5+ Kc6 3.Ka4 Kxb6 4.d4 Kc6 5.Rc5+ Kb6 6.Ra5 Kc6 7.d5+ Kb6 8.c5#

[Tommy]

I just tried a chess puzzle (number 10) from http://www.chess-poster.com/chess_probl ... e_in_9.htm

Its supposed to be a mate in 9 (17 plies) with key e3,
but my chess engine solves it in 8 (15 plies) with the key Bh2

My engine found Bh2 in 15 ply as well, PV below...

Code: Select all

15  31984   134937   1086840810 g1h2 c6c5 f6f5 c5c6 a5a4 c6b6 d3d4 b6c6 f5c5 c6b6 c5a5 b6c6 d4d5 c6b6 c4c5