Rook and pawn versus rook
Rook and pawn versus rook is the ending where one side has a rook and a single pawn against a lone rook, a common practical ending whose result usually turns on where the defending king stands.
Most rook endings with pawns can trade down to this one, so it repays study more than almost any other ending. Rather than memorizing positions, start each time with three questions.
Can the defending king reach the square in front of the pawn? If it can, the defender should usually draw by keeping the rook active: hold the attacking king off the defender's third rank until the pawn steps onto it, then swing the rook to the far end of the board and check from behind. That method carries Philidor's name.
Is the defending king cut off from the pawn by a rook along a file? Then the attacker often wins, and the plan is to bring the king up in front of the pawn. Once the pawn reaches the seventh rank with its king in front of it and the defending king still cut off, the attacker uses the rook to shelter the king from checks, the bridge of the Lucena position.
Which file is the pawn on? A rook pawn, and to a lesser degree a knight pawn, gives the attacker far less room, and several drawing setups work only against them.
For the attacker, the most common error is pushing the pawn before cutting the king off and activating the rook. For the defender, it is leaving the rook passive on the back rank against a central or bishop pawn, which gives the attacker time to combine mating threats with the pawn's advance.
Compare it with Checking distance. Checking distance is the space a defending rook keeps from the enemy king, usually a long way off, so it can give a series of checks from the side or behind without being attacked.
A neighboring idea is Cutting off the king. Cutting off the king means placing a rook on a file or rank so that the enemy king cannot cross it, which keeps the king away from the pawns and often makes a rook ending easy to win.
Compare it with Second rank defense. Second rank defense is a rook-ending method in which the defender keeps the rook on its own second rank to stop the enemy king stepping up and to keep checking options open.
Endgame ideas like "Rook and pawn versus rook" are won or lost on small details, which a coach can check in your own games. The first lesson with George Li is where that review starts.
Related terms
The Lucena position is the key winning setup in rook and pawn against rook: the pawn stands on the seventh rank, its king sits on the promotion square, the enemy king is cut off, and building a bridge with the rook wins.
The Philidor position is the textbook draw for the side with the lone rook: the king blocks the pawn, the rook guards its own third rank, and once the pawn steps onto that rank the rook drops back to check from behind.
The Vancura position is a drawing setup against a rook pawn on the sixth rank with its rook in front: the defending rook attacks the pawn from the side, and the defending king waits on the far side of the board.
A rook endgame is an ending in which each side has a rook and some pawns and no other pieces, and it is the most common type of endgame, so its main ideas are worth learning early.
An active rook controls open lines, attacks enemy pawns or the king from behind or the side, and cannot easily be attacked, which makes it far stronger than a rook that merely sits and defends.
Checking distance is the space a defending rook keeps from the enemy king, usually a long way off, so it can give a series of checks from the side or behind without being attacked.
Guides that go further
What to decide first, the questions to ask, what a first lesson should show and the red flags to avoid.
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A game review, a read on your level and a written study plan from George Li.
Want to spot this in your own games?
A first lesson starts with your games: George reviews them and builds a study plan around what he finds.