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Chess Problem 1992g4f601

BDS

feenschach, 1992

s4B2/1*3Q6/1P1ppkB1/*3rPp1p2P/P*3s2p1K1/p1p1p3/4P1S1/2*3b4*3b

#3
LEO b7
PAO a5
VAOs c1, h1
MAO b4 

1.Kh4!  (2.Sxe3 & 3.Sg4#)

1...MAd5 2.LEa6 & 3.LExd6#
1...MAc2 2.LEc6 & 3.LExc3#

Each black defence blocks a bP, which the wLE can then threaten with ustoppable capture and mate. If the bPs weren’t blocked, the threat to capture them with mate could be refuted my merely moving them, because Leos, Paos and Vaos move and capture in different ways.

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