Chess puzzle (Checkmate)
Opening: Blackmar-Diemer_Gambit, Blackmar-Diemer_Gambit_Other_variations
Moves: 1. e4 Nf6 2. Nc3 d5 3. d4 dxe4 4. Bc4 Bf5 5. Bg5 e6 6. Qe2 Qxd4 7. Rd1 Qb6 8.
Nxe4 Nxe4 *
Position (FEN): rn2kb1r/ppp2ppp/1q2p3/5bB1/2B1n3/8/PPP1QPPP/3RK1NR w Kkq - 0 9
White to move.
Themes:  Opening Mate in 1 
Puzzle rating: 1343
Best move: Rd8#