Chess puzzle (Advantage)
Opening: Center_Game, Center_Game_Normal_Variation
Moves: 1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qa4 Bc5 5. Nf3 d6 6. Nbd2 Bd7 7. Bb5 Qf6 8.
O-O O-O-O 9. Nc4 a6 10. Bg5 axb5 *
Position (FEN): 2kr2nr/1ppb1ppp/2np1q2/1pb3B1/Q1N1P3/5N2/PPP2PPP/R4RK1 w - - 0 11
White to move.
Themes:  Middlegame  
Puzzle rating: 854
Best move: Qa8+