BDS
diagrammes, 1990
#2
PAOs b4, h4
VAO c4
1.Kg4! (2.Qc7#) 1...VAxe2+ 2.S3d4# 1...VAxe6+ 2.S5d4# 1...Rc5 2.Qd7# 1...Rb7 2.Qd6#
The white king walks into two double-checks, but survives by removing the hurdle on one line over which he is checked and placing it onto the other line. Two self-blocks by black rooks complete the play.
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