Saturday, April 3, 2010
From The Art of the Checkmate
by Renaud and Kahn.
See the solution after the fold:
1. Qxc6+ bxc6 2. Ba6# 1-0
The idea here is similar to the tactical motif of removing the guard in that you must visualize the possibility of delivering mate with the bishop at a6, and then calculate the removal of the pawn which guards this square with the forcing Qxc6+.
This mating pattern with crossing bishops is named for Samuel Boden who played it in 1853 (though perhaps not the first to do so).