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Problem Observer, 2000

#2
VAOs c2; b3, a4;
PAOs g3; a3:
MAO h8

1.S4h6  (2.PAh3#)

1...VAf7 2.PAg6#
1...VAe6 2.Kf5#
1...VAd5 2.Ke4#
1...VAc4 2.PAd3#
1...VAe8 2.PAg6#

Anti-battery mates from the wVAOc2 on the four squares between it and the black king. Each time, White has to occupy the square that the defending black VAO would otherwise be able to move to. The two black VAOs on white squares are to be regretted (though it would be very awkward if one of them were a LEO) and the repeated mate on g6 after the defence by the other black VAO is unfortunate, but I decided not to stop it.