Chess Puzzle #22SA4 — Beginner, White to move, middlegame

Position

White: king b1; rook d1; bishop b5; pawns a3/b2/e5/f4/g3/h2. Black: king f8; rook c7; bishop g7; knight d5; pawns a5/b7/f5/f7/h6. Black is ahead by 2 points of material. White to move.

Solution (2 moves)

1. Opponent setup: Nb6 — knight d5→b6. Now White to move.
2. Best move: Rd8+ — rook d1→d8, gives check. Opponent replies Ke7 (king f8→e7).
3. Best move: Re8# — rook d8→e8, delivers checkmate.

Why this works

After 1.Rd8+, Black's king on f8 is in check and has only one legal move: 1...Ke7. The e8 square is controlled by the rook itself; d7 is also controlled by the rook; g8 is blocked by Black's own bishop on g7. Once the king lands on e7, 2.Re8 is checkmate because the king has no escape squares (d6, d7, d8, e6, f6, and f8 are all controlled by the rook on e8), the bishop on b5 controls d7, and no piece can interpose on the e-file. The rook dominates the entire eighth rank and cuts off all flight squares.

What to practice

Recognize back-rank and near-rank mating patterns where a rook delivers mate along a file the enemy king cannot escape. The key is forcing the king into a corridor with one move (here, the check on d8 narrows Black's options to a single square), then delivering mate on the next move along the same file. Look for positions where your rook controls multiple escape squares and your opponent's pieces cannot defend or block.

Tactical themes

endgame, mate, mate in 2, opera mate, short. The combination ends with Re8# delivering checkmate.

Position data

FEN: 5k2/1pr2pb1/7p/pB1nPp2/5P2/P5P1/1P5P/1K1R4 b - - 6 26

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