Philidor Position
Draw by keeping the attacking king away before the pawn reaches the 6th rank.
Plan step 1
Keep the rook on the 3rd rank.
Plan step 2
Prevent the attacking king from advancing.
Plan step 3
When the pawn reaches the 6th rank, move the rook behind and give checks.
Conditions to check
Wait first, check later. The defending king should stay in front of the pawn. The rook becomes active only after the pawn advances.
Common mistakes
Checking too early. Letting the attacking king reach the 6th rank area. Putting the rook passively on the back rank.