Chess puzzle (Advantage)
Opening: Queens_Gambit_Declined, Queens_Gambit_Declined_Other_variations
Moves: 1. d4 d5 2. c4 Nf6 3. Nc3 e6 4. Bg5 Be7 5. Nf3 c5 6. e3 O-O 7. dxc5 Bxc5 8. e4
dxe4 9. Ne5 Qb6 10. Qe2 Na6 11. a3 Nh5 12. Nxe4 Bxf2+ *
Position (FEN): r1b2rk1/pp3ppp/nq2p3/4N1Bn/2P1N3/P7/1P2QbPP/R3KB1R w KQ - 0 13
White to move.
Themes:  Middlegame  
Puzzle rating: 1450
Best move: Nxf2