Underpromotion at the Car Lot: When the Smaller Piece Is the Only One That Fits the Position
The Pawn Reaches the Last Rank In chess, a pawn that reaches the farthest rank must be exchanged, as part of the same move, for a queen, rook, bishop, or knight of the same color. The FIDE Laws of Chess state this plainly in Article 3.7.e. The choice is not restricted to pieces that have…