Chess puzzle (Checkmate)
Opening: Center_Game, Center_Game_Berger_Variation
Moves: 1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 Nf6 5. Bd2 b6 6. Nc3 Bc5 7. Qg3 O-O 8.
O-O-O Re8 9. Bd3 Nb4 10. f3 d5 11. exd5 Nxd3+ 12. cxd3 Nxd5 13. Nge2 Nb4 14. d4
Bf5 15. dxc5 Qd3 16. Nd4 Qb1+ 17. Nxb1 *
Position (FEN): r3r1k1/p1p2ppp/1p6/2P2b2/1n1N4/5PQ1/PP1B2PP/1NKR3R b - - 0 17
Black to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 1220
Best move: Nxa2#