Chess Puzzle #X2KEU — Expert, Black to move, middlegame

Position

White: king g5; pawns a3/b2/c3/g3/h4. Black: king e6; pawns a5/b5/c4/c6/g7/h5. Black is ahead by 1 point of material. Black to move.

Solution (3 moves)

1. Opponent setup: Kxh5 — king g5→h5, captures pawn. Now Black to move.
2. Best move: Kf5 — king e6→f5. Opponent replies g4+ (pawn g3→g4, gives check).
3. Best move: Kf6 — king f5→f6. Opponent replies g5+ (pawn g4→g5, gives check).
4. Best move: Kf5 — king f6→f5.

Why this works

Black's king maneuver 1...Kf5 initiates a zugzwang strategy in a race where Black's passed pawns on the queenside (a5, b5, c4) are far more advanced than White's kingside pawns. After 2.g4+ Kf6 3.g5+ Kf5, Black has forced White's pawns to advance and block their own progress. The critical point: White's king on h5 is too far from the queenside to stop Black's pawns. Black's king, though momentarily harassed by checks, will pivot to support the c4, b5, and a5 pawns' advance down the board. White cannot create a second passed pawn fast enough — the h-pawn is stopped by Black's h5 pawn, and the a3 pawn is blocked by Black's a5 pawn. Black's three connected passed pawns will queen while White's king remains stranded on the kingside.

What to practice

In pawn endgames with passed pawns on opposite flanks, calculate whether your king can abandon one sector to blockade the opponent's pawns while your own pawns race. The key is a tempo calculation: count how many moves each side needs to promote. Black's king doesn't need to defend h5 immediately — it only needs to shepherd the queenside majority to the promotion square. Recognize when checks buy time without preventing the inevitable: each forcing move White makes actually advances Black's plan by pushing the kingside pawns further from the action.

Tactical themes

crushing, defensive move, endgame, long, pawn endgame. The key move is Kf5.

Position data

FEN: 8/6p1/2p1k3/pp4Kp/2p4P/P1P3P1/1P6/8 w - - 0 36

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