Tuesday, July 29, 2008

Definitions: Annihilation of Defense

Annihilation of defense: The removal of any pieces that stand in the way of delivering a coup de grace.

I think that's a simple enough definition for something that is often so spectacular...

Lebedev vs Valdaev, USSR, 1930 (ECM position #1746)
Black to move

The pawns in white's castle wall are in the way, so let's just be rid of them! 1. Nxg3 2. hxg3 Qxg3+ 3. Kh1 Qg2+ 4. Bxg2 hxg2+ 5. Kg1 Rh1#

Quite a number of positional factors and tactical features contributed to this combination; the a8-h1 diagonal, the pinned f2 pawn, immobilising the King, and clearance of the h-file making White's back rank weak.

No comments: