Sixth chords, blah blah blah:
And so blah blah blah
Vukcevich helpmate duplex on chessbase page - on
helpmate[?] and prob M.Vuk as well.
Some problems present the Plachutta theme in a much more complex form. To the right is a problem by
Milan Vukcevich, published in
Chess Life in 1988, a mate in four. The key is 1.Na2, which is not a Plachutta sacrifice, but which threatens one: 2.c4+
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