Chess puzzle (Checkmate)
Opening: English_Opening, English_Opening_Kings_English_Variation
Moves: 1. c4 e5 2. e3 Bc5 3. Ne2 Nf6 4. g3 d5 5. cxd5 Qxd5 6. Rg1 Bg4 7. Bg2 Qd3 8.
Bxb7 Na6 9. Bxa8 Nb4 10. Na3 e4 11. Bxe4 Nxe4 12. Rf1 Qxa3 13. bxa3 *
Position (FEN): 4k2r/p1p2ppp/8/2b5/1n2n1b1/P3P1P1/P2PNP1P/R1BQKR2 b Qk - 0 13
Black to move.
Themes:  Middlegame Mate in 1, Smothered Mate 
Puzzle rating: 938
Best move: Nd3#