Chess puzzle (Checkmate)
Opening: English_Opening, English_Opening_Carls-Bremen_System
Moves: 1. c4 Nf6 2. Nc3 e5 3. g3 Nc6 4. Bg2 Be7 5. e3 d6 6. d4 O-O 7. Nge2 Re8 8. dxe5
Nxe5 9. Qb3 Nd3+ 10. Kf1 Ng4 11. Nd1 Nc5 12. Qc2 Ne5 13. Nf4 Bg5 14. b4 Bxf4
15. exf4 Ned3 16. bxc5 *
Position (FEN): r1bqr1k1/ppp2ppp/3p4/2P5/2P2P2/3n2P1/P1Q2PBP/R1BN1K1R b - - 0 16
Black to move.
Themes:  Opening Mate in 1 
Puzzle rating: 1017
Best move: Re1#