mhelshou
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Found a defence for a spectacular mate in Reinfeld - 2007/07/07 23:01
With the help of Deep Junior, I found a defense for the spectacular two bishops mate number 398 in Reinfeld's book 1001 Brilliant ways to Checkmate.
While White situation will end up bad anyway, an actual mate will take a bit longer to achieve.
The key in this mate is pinning all White's active pieces and then hurry the king for the attack of the pinned piece, something I completely overlooked when I first set to solve it.
However with Deep Junior, I could find one way out of an immediate mate. The solution is for White to push its pawns forward so that Black is facing either one of two situations, allow White to promote but then it's too late for the king to achieve the mate, or block the pawns and in such a case black will have to compromise to avoid a stalemate.
The original Reinfeld solution goes like this:
1... Kh7 2. Be1 Kh6 3. Bc3 Kh5 4. Be1 Kg4 5. Bc3 hxg2+ 6. Rxg2+ Kh3 7. Be1 Bxg2#
and he says, White can vary his play but cannot escape from the mating net.
Not entirely accurate. The defense line goes like this:
1... Kh7 2. a5 Kh6 3. axb6 axb6 4. f5 Kh5 5. fxg6 fxg6 6. b5 Kg4 7. Be1 hxg2+ 8. Rxg2+ Kh3 9. Bf2
Now if Black takes the Bishop, it's a stale mate. If he takes the Rook then the King has new room to breath, albeit not for long.
What do you guys think? Very nice problem, and very nice ideas.
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