Q-305

  When the pawn is defended sideways, the weaker side can count on salvation only when its pawn is on the second rank. The edge pawn is most favorable because then the opponent’s king is trapped on the promotion square and cannot participate in the battle. One such position was explored by A. Cheron in […]

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Q-303

  When, in a similar position, Black has an edge pawn, so that the white king cannot penetrate to the fourth rank behind its back, White runs into great difficulty in the realization of the advantage. Namely, when approaching a rook along the first or second rank, at one point a tactical possibility of pawn […]

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