Chess puzzle (Crushing)
Opening: Blackmar-Diemer_Gambit_Declined, Blackmar-Diemer_Gambit_Declined_Lamb_Defense
Moves: 1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 Nc6 5. Bf4 Nxd4 6. fxe4 Bg4 7. Nf3 Nxf3+
8. gxf3 Qxd1+ 9. Rxd1 Bh5 10. Rg1 e6 11. Bxc7 Bxf3 *
Position (FEN): r3kb1r/ppB2ppp/4pn2/8/4P3/2N2b2/PPP4P/3RKBR1 w kq - 0 12
White to move.
Themes:  Middlegame  
Puzzle rating: 1234
Best move: Bb5+