P-213

 

A protected passed pawn is much stronger than a potential passed pawn since it seriously restrains the enemy king. When his potential passed pawn is outside the square of the white protected passed pawn, Black, as a rule, loses since he cannot adequately defend his pawns on the opposite wing. In such cases even the opposition does not help – which is also corroborated by a very interesting case which arose in the ending of the game Berg – Petrov, Kemeri, 1937, with colours reversed.

 

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