Chess puzzle (Crushing)
Opening: Ruy_Lopez, Ruy_Lopez_Berlin_Defense
Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 h6 5. Bxc6 dxc6 6. Nxe5 Bd6 7. Nc4 b5 8.
Nxd6+ Qxd6 9. O-O O-O 10. Re1 Re8 11. Nc3 Ng4 12. f4 *
Position (FEN): r1b1r1k1/p1p2pp1/2pq3p/1p6/4PPn1/2NP4/PPP3PP/R1BQR1K1 b - - 0 12
Black to move.
Themes:  Middlegame  
Puzzle rating: 1277
Best move: Qd4+