Chess puzzle (Checkmate)
Opening: Russian_Game, Russian_Game_Stafford_Gambit
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6 4. Nxc6 dxc6 5. d3 Bc5 6. Be2 Ng4 7. Bxg4 Qh4
8. Qf3 Bxg4 9. Qg3 Qxg3 10. hxg3 O-O-O 11. c3 Rxd3 12. Bf4 *
Position (FEN): 2k4r/ppp2ppp/2p5/2b5/4PBb1/2Pr2P1/PP3PP1/RN2K2R b KQ - 1 12
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 993
Best move: Rd1#