About Underpromotion
Underpromotion is choosing to promote a pawn to something other than a queen — usually a knight, occasionally a rook or bishop — because that piece does the job better. A knight underpromotion can deliver an immediate fork or checkmate that a queen cannot; a rook can avoid stalemating the enemy king; a bishop is rarest of all. These brilliant, counter-intuitive moves are among the most satisfying in chess. These {count} underpromotion puzzles train you to see the moment when a smaller piece is the strongest choice.
Frequently asked questions
What is underpromotion?
Underpromotion is promoting a pawn to a knight, rook or bishop instead of a queen, because the lesser piece is more effective in that specific position.
Why promote to a knight instead of a queen?
A knight reaches squares a queen cannot, so a knight promotion can give an immediate check, fork or checkmate that a new queen would miss.
When is a rook underpromotion useful?
Occasionally a queen would stalemate the enemy king; promoting to a rook keeps the king in check-free but still lost, avoiding the draw.
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