Chess puzzle (Checkmate)
Opening: Kings_Indian_Defense, Kings_Indian_Defense_Makogonov_Variation
Moves: 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. h3 O-O 6. Qf3 Nc6 7. Be3 e5 8. d5 Ne7
9. Bd3 Ne8 10. Nge2 f5 11. exf5 Nxf5 12. Qe4 Nxe3 13. Qxe3 Nf6 14. O-O-O a5 15.
f4 e4 16. Nxe4 Bf5 17. Nxf6+ Qxf6 18. Bxf5 *
Position (FEN): r4rk1/1pp3bp/3p1qp1/p2P1B2/2P2P2/4Q2P/PP2N1P1/2KR3R b - - 0 18
Black to move.
Themes: Queenside Attack Middlegame Mate in 1 
Puzzle rating: 771
Best move: Qxb2#