The Philidor Position
The Philidor position is the mirror image of the problem the Lucena position solves: instead of converting a win, you're defending a draw. If your king reaches the queening square before the pawn arrives, holding the third rank with your rook keeps the enemy king from ever crossing it — until the pawn advances to the sixth rank, at which point you switch to checking from behind instead.
Black holds this position with careful rook play on the third rank — a textbook drawn rook ending despite being a pawn down.
Key ideas
- Keep your rook on the third rank (from your side) to stop the enemy king crossing it.
- Once the attacking pawn reaches the sixth rank, abandon the third rank and start checking the king from behind instead.
- The checks now have room — the pawn is in the way of its own king finding shelter — so the position holds as a draw.
- Timing the switch is everything: check too early and the king simply blocks; hold the third rank too long and the pawn queens.
Common mistakes
- Holding the third rank forever, even after the pawn reaches the sixth rank — this loses instead of drawing.
- Checking from behind too early, before the pawn has advanced far enough to leave the king exposed.
- Passive rook moves instead of committing to the third-rank blockade early enough.