Chess Puzzle #StNkK — Master, Black to move, middlegame

Position

White: king g1; queen g6; rooks e1/e7; pawns c7/d4/f2/g4/h3. Black: king h8; queen c3; rooks a8/g8; pawns a3/f3/f4/g7/h6. Material is balanced. Black to move.

Solution (4 moves)

1. Opponent setup: Qe6 — queen g6→e6. Now Black to move.
2. Best move: a2 — pawn a3→a2. Opponent replies Rxg7 (rook e7→g7, captures pawn).
3. Best move: Qxe1+ — queen c3→e1, captures rook, gives check. Opponent replies Qxe1 (queen e6→e1, captures queen).
4. Best move: Rxg7 — rook g8→g7, captures rook. Opponent replies Qe6 (queen e1→e6).
5. Best move: a1=Q+ — pawn a2→a1, promotes to queen, gives check.

Tactical themes

advanced pawn, advantage, endgame, promotion, very long. The key move Qxe1+ captures with check, forcing a response.

Position data

FEN: r5rk/2P1R1p1/6Qp/8/3P1pP1/p1q2p1P/5P2/4R1K1 w - - 0 37

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