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A Bohemian masterpiece, which incorporates a formal theme. The brothers Vladimir and
Ludek Pachman were unique in the chess world, one a Grandmaster of composition, the
other a Grandmaster of the game.
Mates are ready at e6 and f3 for moves of the bishop, so it is the knight that will provide
the play. The key, 1.g3, contains no threat. A random move of the knight
(1...Sa4 or 1...Sd1) unguards d3, and White continues by compelling the
bishop to block f3 - 2.Sf3+ Bxf3 3.Sf5+ Ke4 4.d3. Black can correct by blocking
d3, leading to an echoed deflection of the bishop –
1...Sd3 2.Sf5+ Bxf5 3.Sf3+ Ke4 4.Qc6, while another correction cuts the
queen’s guard of d3, leading to a third model –
1...Sc4 2.Qxc4+ Ke5 3.Sge4 any 4.d4.
Peter Niehoff: A perfect key move. Second degree defences, matching bishop
anticipatory selfblocks on f3 and f5, and three model mates, with both
white pawns participating.
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