Chess puzzle (Crushing)
Opening: Alekhine_Defense, Alekhine_Defense_Two_Pawn_Attack
Moves: 1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. Nf3 Nc6 6. exd6 cxd6 7. d5 Ne5 8.
Nxe5 dxe5 9. Bd3 e6 10. Nc3 Bb4 11. Qa4+ *
Position (FEN): r1bqk2r/pp3ppp/1n2p3/3Pp3/QbP5/2NB4/PP3PPP/R1B1K2R b KQkq - 3 11
Black to move.
Themes: Pin Opening  
Puzzle rating: 1036
Best move: Nxa4