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BDS

The Problemist Supplement, 2015

#2
ROOK-HOPPERs e8, e1; g1

1.Rd7! (2.Re7#)

1...Re4 2.Sd3#
1...Be4 2.Sxg4#
1...Qf3 2.RHe6#
1...Bf5 2.Re6#

In the first two variations Black defends by cutting the line of the wBg2 to d4, providing the bK with a potential flight. Any piece landing on e4 (except the bQ, which would be self-check) pins the bQ. White then plays pin-mates which also take advantage of the Grimshaw provided by the black R and B. Black can also cut the g2-d5 line by 1...Qf3, but this clears the way for the wRHe1 to mate on e6. Finally, 1...Bf5 is a standard self-block.