Chess puzzle (Advantage)
Opening: Four_Knights_Game, Four_Knights_Game_Other_variations
Moves: 1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. g3 Bc5 5. Bg2 O-O 6. O-O a6 7. d3 h6 8. Be3
Bb4 9. Nd5 Be7 10. Nxe7+ Qxe7 11. Nd2 b6 12. f4 d6 13. f5 d5 *
Position (FEN): r1b2rk1/2p1qpp1/ppn2n1p/3ppP2/4P3/3PB1P1/PPPN2BP/R2Q1RK1 w - - 0 14
White to move.
Themes:  Opening  
Puzzle rating: 955
Best move: exd5