P-186A

 

When Black has doubled pawns even blockade cannot save the game since White will by exchanging one pawn transpose into a winning ending of two pawns versus one pawn. Let us take a look at the ending Charousek – Kosterka, Prague, 1897, which had been considered drawn for more than half a century. Only in 1952 did F. Dederle prove that White wins despite his opponent having the opposition.

 

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