Chess puzzle (Checkmate)
Opening: Nimzowitsch_Defense, Nimzowitsch_Defense_Colorado_Countergambit
Moves: 1. e4 Nc6 2. Nf3 f5 3. Nc3 fxe4 4. Nxe4 d5 5. Ng3 e5 6. Bb5 e4 7. Nd4 Bd7 8.
Nxc6 bxc6 9. Ba4 Nf6 10. O-O Bd6 11. d3 O-O 12. dxe4 Bxg3 13. fxg3 Nxe4 14.
Rxf8+ Qxf8 15. Qf3 Qb4 16. Qb3 *
Position (FEN): r5k1/p1pb2pp/2p5/3p4/Bq2n3/1Q4P1/PPP3PP/R1B3K1 b - - 3 16
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1102
Best move: Qe1#