Proof game

  
Problem

Proof game


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Alkis Xristostomidis    (2011-03-23 03:44:40)
Proof game

ChessPosition (see diagram) A game ended with the move 5...Rh1# (that is black on his 5th move played Rh1 WITHOUT taking a white piece,mating white).

Reconstruct that game

Be warned: it is rather hard,yet the solution is really "elegant" and beautiful
8
7
6
5
4
3
2
1
a b c d e f g h




Svante Carl von Erichsen    (2011-03-24 18:24:19)
Proof game

I think the following works: 1.g4 h5 2.Bg2 hxg5 3.Bxb7 Rxh2 4.Nh3 Bxg7 5.0-0 Rh1# I couldn't prove that this is a unique solution, though.


Alkis Xristostomidis    (2011-03-26 12:34:38)
Proof game

It is 2...hxg4 and 4...Bxb7 but you're right!

To prove it is the only solution you'd probably need a program
checking all possible moves from the start position