Chess puzzle (Advantage)
Opening: Horwitz_Defense, Horwitz_Defense_Other_variations
Moves: 1. d4 e6 2. d5 exd5 3. e4 dxe4 4. Nc3 g6 5. Bc4 Qe7 6. Nge2 Bg7 7. O-O f5 8.
Nd5 Qd6 9. Bf4 Be5 10. Bxe5 Qxe5 11. Qd4 Qxd4 12. Nxd4 Kd8 13. Rad1 c6 14. Nf4
Nf6 15. Nde6+ Ke7 16. Nc7 b5 17. Bb3 g5 18. Nh3 a5 *
Position (FEN): rnb4r/2Npk2p/2p2n2/pp3pp1/4p3/1B5N/PPP2PPP/3R1RK1 w - - 0 19
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 1122
Best move: Nxa8