Chess Puzzle #jdCKd — Master, Black to move, endgame

Position

White: king e1; queen f7; pawn h3. Black: king e3; rook a3; pawns e4/f3. White is ahead by 3 points of material. Black to move.

Solution (4 moves)

1. Opponent setup: Kd1 — king e1→d1. Now Black to move.
2. Best move: f2 — pawn f3→f2. Opponent replies Kc2 (king d1→c2).
3. Best move: Ra2+ — rook a3→a2, gives check. Opponent replies Qxa2 (queen f7→a2, captures rook).
4. Best move: f1=Q — pawn f2→f1, promotes to queen. Opponent replies Qa7+ (queen a2→a7, gives check).
5. Best move: Ke2 — king e3→e2.

Tactical themes

advanced pawn, crushing, defensive move, deflection, endgame, exposed king, promotion, queen rook endgame, very long. The key move is f2.

Position data

FEN: 8/5Q2/8/8/4p3/r3kp1P/8/4K3 w - - 5 55

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