Chess Puzzle #C7nk5 — Intermediate, White to move, endgame

Position

White: king g1; rooks a7/e7; bishop d5. Black: king h8; rooks c8/f8; knight e5; pawns a5/g7/h6. Black is ahead by 3 points of material. White to move.

Solution (2 moves)

1. Opponent setup: Nc6 — knight e5→c6. Now White to move.
2. Best move: Bxc6 — bishop d5→c6, captures knight. Opponent replies Rxc6 (rook c8→c6, captures bishop).
3. Best move: Rxg7 — rook e7→g7, captures pawn.

Why this works

After Black's 40...Nc6, White faces a threat to the rook on e7, but 41.Bxc6 initiates a forcing sequence that holds the position. Black must recapture with 41...Rxc6 (the only legal move), and then 42.Rxg7 creates an immediate back-rank threat against the king on h8. The rook on g7 controls the escape square g8 and threatens Rg8#. Black's remaining rook on f8 is powerless to defend because it cannot reach the eighth rank in time, and the rook on c6 is too far away. The position stabilizes because White's rooks dominate the seventh and g-files while Black's pieces are uncoordinated. White has traded bishop for knight and pawn — a material swap that transforms a worse endgame into a drawable or even superior one.

What to practice

Recognize when a seemingly passive exchange (trading your active piece for an opponent's defender) buys you a tempo for a forcing follow-up. Here, Bxc6 looks like you're just trading pieces, but it's actually a disguised deflection: it forces Black's rook to recapture, removing it from the back rank and allowing your rook to seize control of the g-file with check motifs. Train yourself to calculate one move deeper when an exchange lands your piece on a square that creates a tactical follow-up.

Tactical themes

endgame, equality, master, short. The key move Bxc6 wins material.

Position data

FEN: 2r2r1k/R3R1p1/7p/p2Bn3/8/8/8/6K1 b - - 4 40

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