Chess puzzle (Checkmate)
Opening: Blumenfeld_Countergambit, Blumenfeld_Countergambit_Other_variations
Moves: 1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. d5 exd5 5. cxd5 b5 6. e4 Nxe4 7. Bxb5 Qa5+ 8.
Nfd2 Nxd2 9. Qe2+ Ne4+ 10. Bd2 Qd8 11. Qxe4+ Qe7 12. Nc3 Bb7 13. O-O Qxe4 14.
Nxe4 Bxd5 15. Rfe1 Kd8 16. Ba5+ Kc8 17. Rac1 Bc6 18. Nxc5 Bxb5 *
Position (FEN): rnk2b1r/p2p1ppp/8/BbN5/8/8/PP3PPP/2R1R1K1 w - - 0 19
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 733
Best move: Re8#