Chess Puzzle #BE9Ru — Master, White to move, opening

Position

White: king g1; queen h3; rooks a1/e1; bishops e2/h6; knights c3/f7; pawns a2/b2/c2/d4/f2/g2/h2. Black: king g8; queen d8; rooks a8/e8; bishops c8/e7; knights d7/f6; pawns a7/b7/c6/e6/g6/h7. White is ahead by 1 point of material. White to move.

Solution (4 moves)

1. Opponent setup: Kxf7 — king g8→f7, captures knight. Now White to move.
2. Best move: Qxe6+ — queen h3→e6, captures pawn, gives check. Opponent replies Kxe6 (king f7→e6, captures queen).
3. Best move: Bg4+ — bishop e2→g4, gives check. Opponent replies Kd6 (king e6→d6).
4. Best move: Bf4+ — bishop h6→f4, gives check. Opponent replies Ne5 (knight d7→e5).
5. Best move: Bxe5# — bishop f4→e5, captures knight, delivers checkmate.

Tactical themes

attraction, double check, mate, mate in 4, middlegame, sacrifice, very long. The combination ends with Bxe5# delivering checkmate.

Position data

FEN: r1bqr1k1/pp1nbN1p/2p1pnpB/8/3P4/2N4Q/PPP1BPPP/R3R1K1 b - - 0 14

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