Chess puzzle (Checkmate)
Opening: Englund_Gambit, Englund_Gambit_Other_variations
Moves: 1. d4 e5 2. dxe5 Bb4+ 3. Bd2 Nc6 4. Bxb4 Nxb4 5. c3 Nc6 6. Nf3 Qe7 7. e3 Nxe5
8. Nbd2 Nf6 9. Nxe5 Qxe5 10. Nc4 Qd5 11. Qxd5 Nxd5 12. O-O-O c6 13. Nd6+ Ke7
14. Nf5+ Kf6 15. e4 Ne7 16. Rd6+ Ke5 17. f4+ Kxe4 18. Bd3+ Kxf4 19. g3+ Ke5 *
Position (FEN): r1b4r/pp1pnppp/2pR4/4kN2/8/2PB2P1/PP5P/2K4R w - - 1 20
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 872
Best move: Re1#