Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Staunton-Cochrane_Variation
Moves: 1. e4 c5 2. c4 Nc6 3. Nc3 Nf6 4. d3 d6 5. Be2 Nd4 6. Nd5 Nxd5 7. cxd5 g6 8. Nf3
Bg4 9. O-O Bg7 *
Position (FEN): r2qk2r/pp2ppbp/3p2p1/2pP4/3nP1b1/3P1N2/PP2BPPP/R1BQ1RK1 w kq - 4 10
White to move.
Themes:  Opening  
Puzzle rating: 1395
Best move: Nxd4