Chess puzzle (Advantage)
Opening: Center_Game, Center_Game_Paulsen_Attack_Variation
Moves: 1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3 Nb4 5. Qe2 b6 6. a3 Ba6 7. c4 Nc6 8. Nf3
Qf6 9. b4 *
Position (FEN): r3kbnr/p1pp1ppp/bpn2q2/8/1PP1P3/P4N2/4QPPP/RNB1KB1R b KQkq - 0 9
Black to move.
Themes: Hanging Piece Opening  
Puzzle rating: 1289
Best move: Qxa1