Chess Puzzle #0p1CU — Beginner, Black to move, middlegame

Position

White: king e4; rook c7; bishop c6; pawns a7/f2/g2. Black: king f6; rook c2; bishop c4; pawns d4/e5/g4/h5. Black is ahead by 1 point of material. Black to move.

Solution (1 move)

1. Opponent setup: a8=Q — pawn a7→a8, promotes to queen. Now Black to move.
2. Best move: Re2# — rook c2→e2, delivers checkmate.

Why this works

After White's pawn promotes to a8, Black delivers checkmate with 1...Re2. The rook on e2 gives check to the White king on e4, and the king has no escape squares: d3 is controlled by Black's bishop on c4, d5 is also controlled by the bishop, f3 is controlled by the rook on e2, f5 is controlled by Black's king on f6, and e3 is controlled by the rook. White cannot interpose (no piece can block on e3 or e4), and the rook cannot be captured. This is Pillsbury's mate — the characteristic pattern where a rook on the fifth rank delivers mate to a centralized king when a bishop controls key escape squares.

What to practice

Recognize the geometry of Pillsbury's mate in rook-and-bishop endgames: a rook on the second or fifth rank can deliver mate to a king in the center if a bishop controls two escape squares on adjacent files. The pattern is most common when the defending king tries to advance aggressively into the center. Drill the key squares: if your rook reaches the second rank with a bishop backing up the escape squares, the opponent's centralized king is often lost.

Tactical themes

endgame, mate, mate in 1, one move, pillsburys mate. The combination ends with Re2# delivering checkmate.

Position data

FEN: 8/P1R5/2B2k2/4p2p/2bpK1p1/8/2r2PP1/8 w - - 1 43

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