Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Chigorin_Variation
Moves: 1. d4 d5 2. Nf3 Nc6 3. Nc3 Bg4 4. Ne5 Nxe5 5. dxe5 e6 6. Qd4 Bh5 7. Nb5 b6 8.
e4 dxe4 9. Qxd8+ Rxd8 10. Nxc7+ Ke7 11. Na6 *
Position (FEN): 3r1bnr/p3kppp/Np2p3/4P2b/4p3/8/PPP2PPP/R1B1KB1R b KQ - 2 11
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 633
Best move: Rd1#