Chess puzzle (Checkmate)
Opening: Benoni_Defense, Benoni_Defense_Other_variations
Moves: 1. d4 Nf6 2. c4 c5 3. e3 cxd4 4. exd4 g6 5. Bf4 Bg7 6. Nf3 O-O 7. Qd2 d5 8. Be2
dxc4 9. Nc3 Nc6 10. d5 Nb4 11. O-O-O Qa5 12. Bxc4 Bf5 13. Nd4 Rac8 14. Nb3 Rxc4
15. Nxa5 *
Position (FEN): 5rk1/pp2ppbp/5np1/N2P1b2/1nr2B2/2N5/PP1Q1PPP/2KR3R b - - 0 15
Black to move.
Themes: Pin, Queenside Attack Middlegame Mate in 1 
Puzzle rating: 884
Best move: Nxa2#