Chess puzzle (Checkmate)
Opening: Polish_Opening, Polish_Opening_Czech_Defense
Moves: 1. b4 e5 2. Bb2 d6 3. c4 Nf6 4. b5 Be6 5. e3 Nbd7 6. a4 Be7 7. Nf3 O-O 8. Ng5
Nc5 9. d4 Nce4 10. Nxe6 fxe6 11. Bd3 exd4 12. exd4 Nxf2 13. Kxf2 Ne4+ 14. Kg1
Bg5 15. Bxe4 *
Position (FEN): r2q1rk1/ppp3pp/3pp3/1P4b1/P1PPB3/8/1B4PP/RN1Q2KR b - - 0 15
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 815
Best move: Be3#