Philidor Position: chess endgame

How to draw rook-and-pawn against rook a pawn down

Philidor's 1777 draw: king in front of the pawn, rook three ranks up, drop back for endless checks once the pawn advances.

• King in front of the enemy pawn.
• Rook three ranks up, keeping the enemy king out.
• Drop the rook back for endless checks once the pawn advances.
• Reach for it when you're a pawn down in a rook ending.