Chess puzzle (Checkmate)
Opening: Blumenfeld_Countergambit, Blumenfeld_Countergambit_Other_variations
Moves: 1. d4 Nf6 2. Nf3 e6 3. c4 c5 4. e3 a6 5. Nc3 d5 6. cxd5 exd5 7. b3 Nc6 8. Bb2
cxd4 9. Nxd4 Bd6 10. Be2 O-O 11. O-O Qe7 12. Rc1 Rd8 13. Na4 Nxd4 14. Qxd4 Bf5
15. Nb6 Rab8 16. Nxd5 Nxd5 *
Position (FEN): 1r1r2k1/1p2qppp/p2b4/3n1b2/3Q4/1P2P3/PB2BPPP/2R2RK1 w - - 0 17
White to move.
Themes: Kingside Attack Middlegame Mate in 1 
Puzzle rating: 972
Best move: Qxg7#