Chess puzzle (Advantage)
Opening: Scotch_Game, Scotch_Game_Schmidt_Variation
Moves: 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Bc5 6. Be3 Nxd4 7. Bxd4 Bb4
8. Qd3 O-O 9. O-O-O c5 10. Be3 Bxc3 11. bxc3 Nxe4 *
Position (FEN): r1bq1rk1/pp1p1ppp/8/2p5/4n3/2PQB3/P1P2PPP/2KR1B1R w - - 0 12
White to move.
Themes: Hanging Piece Middlegame  
Puzzle rating: 828
Best move: Qxe4