Chess puzzle (Advantage)
Opening: Russian_Game, Russian_Game_Other_variations
Moves: 1. e4 e5 2. Nf3 Nf6 3. d3 Bc5 4. g3 Nc6 5. Bg2 h6 6. O-O a6 7. Re1 d6 8. c3 O-O
9. d4 exd4 10. cxd4 Bb6 11. h3 Nxd4 *
Position (FEN): r1bq1rk1/1pp2pp1/pb1p1n1p/8/3nP3/5NPP/PP3PB1/RNBQR1K1 w - - 0 12
White to move.
Themes:  Opening  
Puzzle rating: 890
Best move: Nxd4