Chess puzzle (Advantage)
Opening: Kings_Gambit_Declined, Kings_Gambit_Declined_Falkbeer_Countergambit
Moves: 1. e4 e5 2. f4 d5 3. exd5 e4 4. d3 Nf6 5. dxe4 Bc5 6. Nc3 a6 7. Nf3 O-O 8. a4
Ng4 9. Nd4 c6 10. h3 *
Position (FEN): rnbq1rk1/1p3ppp/p1p5/2bP4/P2NPPn1/2N4P/1PP3P1/R1BQKB1R b KQ - 0 10
Black to move.
Themes:  Opening  
Puzzle rating: 1470
Best move: Qh4+