Rook Pawn Endgames: The Corner Fortress Draw

Watch the method: press play to see the winning idea run, or step through it move by move.

Every rule of king and pawn endgames has an asterisk that reads 'except rook pawns'. This is the most valuable exception in practical chess.

The fortress. Against an a- or h-pawn, the defending king only needs to reach the promotion corner (or trap the attacking king in front of its own pawn). In the corner there is no outflanking, no opposition duel, no zugzwang: the attacker's king cannot get around, and pushing the pawn to the seventh with your king on the eighth is stalemate.

The count that matters. The whole defense reduces to one question: can my king reach the corner (or the c8/f8 blockade square) before the attacker's king seals it off? If yes, the game is drawn no matter how bad everything else looks.

Why drill it? Because attackers keep trying to win these, often for 30+ moves. Every shuffle must stay inside the fortress squares; step out once and an opponent that never gives up a half point will demonstrate exactly why the asterisk exists.