Chess puzzle (Advantage)
Opening: Four_Knights_Game, Four_Knights_Game_Ranken_Variation
Moves: 1. e4 e5 2. Nc3 Nc6 3. Bb5 Nf6 4. Nf3 a6 5. Bxc6 dxc6 6. Nxe5 Bc5 7. Qf3 Qe7 8.
Qf4 O-O 9. O-O *
Position (FEN): r1b2rk1/1pp1qppp/p1p2n2/2b1N3/4PQ2/2N5/PPPP1PPP/R1B2RK1 b - - 6 9
Black to move.
Themes:  Opening  
Puzzle rating: 2091
Best move: Nh5