Chess puzzle (Checkmate)
Opening: Rat_Defense, Rat_Defense_Small_Center_Defense
Moves: 1. e4 e6 2. d4 d6 3. c4 c5 4. dxc5 dxc5 5. Qxd8+ Kxd8 6. Nc3 Nc6 7. Nf3 Nf6 8.
Be3 g6 9. Rd1+ Ke8 10. Nb5 Ke7 11. Bg5 Bg7 12. e5 Nxe5 13. Nxe5 Kf8 14. Ng4
Nxg4 *
Position (FEN): r1b2k1r/pp3pbp/4p1p1/1Np3B1/2P3n1/8/PP3PPP/3RKB1R w K - 0 15
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 710
Best move: Rd8#