Chess puzzle (Advantage)
Opening: Alekhine_Defense, Alekhine_Defense_Four_Pawns_Attack
Moves: 1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. f4 g5 6. Nf3 Bg4 7. Be2 gxf4 8. Bxf4
Bxf3 9. Bxf3 c6 10. e6 fxe6 11. Bh5+ Kd7 12. Qe2 Na6 13. Bf7 Nc7 14. Nc3 Bg7
15. c5 Nbd5 *
Position (FEN): r2q3r/ppnkpBbp/2ppp3/2Pn4/3P1B2/2N5/PP2Q1PP/R3K2R w KQ - 1 16
White to move.
Themes:  Middlegame  
Puzzle rating: 1540
Best move: Nxd5