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Another impossible chess puzzle for chess engines to solve

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Another impossible chess puzzle for chess engines to solve

Post  Jackph on Sun May 05, 2013 6:33 am

For those of you who thought mate in 27 is tough for chess engines, here is one with mate in 53.

See if your chess engines can solve it?

8/5p1p/8/8/p3Q2K/rp5p/1p3ppr/b2N1bqk w - - 5 1

Enjoy.

Will post answer soon.

Jackph

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Re: Another impossible chess puzzle for chess engines to solve

Post  Jackph on Wed May 08, 2013 2:04 pm

Here is the answer as promised.

1.Qb1 Ra2 2.Kg5 Ra3 3.Kh6 Ra2 4.Kg7 Ra3 5.Kg8 Ra2 6.Kf8 Ra3 7.Ke7 Ra2 8.Kd6 Ra3 9.Kc5 Ra2 10.Kb4 h6 11.Kc5 Ra3 12.Kd6 Ra2 13.Ke7 Ra3 14.Kf6 Ra2 15.Kg7 h5 16.Kf8 Ra3 17.Ke7 Ra2 18.Kd6 Ra3 19.Kc5 Ra2 20.Kb4 f5 21.Ka5 Ra3 22.Kb6 Ra2 23.Ka7 Ra3 24.Ka8 Ra2 25.Kb8 Ra3 26.Ka7 Ra2 27.Kb6 Ra3 28.Ka5 Ra2 29.Kb4 h4 30.Ka5 Ra3 31.Kb6 Ra2 32.Ka7 Ra3 33.Ka8 Ra2 34.Kb8 Ra3 35.Ka7 Ra2 36.Kb6 Ra3 37.Ka5 Ra2 38.Kb4 f4 39.Kc5 Ra3 40.Kd4 Ra2 41.Ke5 Ra3 42.Kxf4 Ra2 43.Ke5 Ra3 44.Kd6 Ra2 45.Kc7 Ra3 46.Kb8 Ra2 47.Ka8 Ra3 48.Ka7 Ra2 49.Kb6 Ra3 50.Ka5 Ra2 51.Kb4 Ra3 52.Kxa3 Bd3 53.Nxf2#*

Enjoy.

Jackph

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