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Retroanalyse im Schach

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Meisterwerke

in der Retroanalyse

21 - A. Hazebrouck

Europe Echecs 95, 12/1966

2./3. Preis Europe Echecs 1966-68

[r3k2r/1pp1p1p1/2p5/1N1qQp1N/2B4n/1P4P1/1PPP1PP1/R3K2R]

14+11. (RV) Hilfsmatt in einem Zug. Wer?

[r3k2r/1pp1p1p1/2p5/1N1qQp1N/2B4n/1P4P1/1PPP1PP1/R3K2R]

Lösung

There are four possibilities:

So all four castlings are legal, but they're not legal at the same time!


Solution by Philippe Schnoebelen