Chess puzzle (Checkmate)
Opening: Benoni_Defense, Benoni_Defense_Benoni_Gambit_Accepted
Moves: 1. d4 c5 2. dxc5 Nc6 3. f4 Qa5+ 4. Bd2 Qxc5 5. Nf3 g6 6. e3 Bg7 7. Nc3 Nf6 8.
Bd3 O-O 9. O-O Ng4 10. Qe2 d5 11. h3 Nf6 12. Kh2 Nd7 13. a3 e5 14. b4 Qd6 15.
fxe5 Ndxe5 16. Nxe5 Nxe5 17. Nb5 Nf3+ 18. Kh1 *
Position (FEN): r1b2rk1/pp3pbp/3q2p1/1N1p4/1P6/P2BPn1P/2PBQ1P1/R4R1K b - - 3 18
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 506
Best move: Qh2#