BDS
StrateGems, 2010
#2
LEOs f5; e8:
PAOs b6, c7:
VAO b7:
MAOs c6, h6
1.Ke1! (2.Qg2#) 1...MAb4 2.LEe6# 1...MAd4 2.Qd5# 1...MAe7 2.Qc2# 1...LEh5 2.Rg4#
Any move by the bMAc6 defeats the threat. If you remove it from the board then 2.LEe6, 2.Qd5 and 2.Qc2# would all be mate. Each are separately forced. 1...LEh5 interferes with the bMAh6.
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