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Underpromotion

Pawns may not become queens.

A rook, a bishop or a knight, and nothing else. Promoting to a knight for a fork stops being a curiosity and becomes the plan. Endgames that depend on a new queen simply do not arrive.

Category
Endgame
Rarity
3
Runs on
Standard

Stars set how often an augment shows up, not how strong it is. Rare ones swing the game, and that is the point.

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Dashed squares are where the legal moves differ from ordinary chess. Click one.

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