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

Position

White: king g1; queen h5; rook f4; pawns a2/b3/c2/e4/g3/h2. Black: king h8; queen g7; rook f8; pawns a7/c6/c7/d6/e6/h6. Material is balanced. Black to move.

Solution (2 moves)

1. Opponent setup: Rg4 — rook f4→g4. Now Black to move.
2. Best move: Qa1+ — queen g7→a1, gives check. Opponent replies Kg2 (king g1→g2).
3. Best move: Qf1# — queen a1→f1, delivers checkmate.

Tactical themes

endgame, mate, mate in 2, short. The combination ends with Qf1# delivering checkmate.

Position data

FEN: 5r1k/p1p3q1/2ppp2p/7Q/4PR2/1P4P1/P1P4P/6K1 w - - 1 29

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