Chess puzzle (Checkmate)
Opening: Elephant_Gambit, Elephant_Gambit_Paulsen_Countergambit
Moves: 1. e4 e5 2. Nf3 d5 3. exd5 e4 4. Nd4 Qxd5 5. Nb3 Nf6 6. Nc3 Qe5 7. Be2 Bd6 8.
d4 exd3 9. Qxd3 O-O 10. O-O *
Position (FEN): rnb2rk1/ppp2ppp/3b1n2/4q3/8/1NNQ4/PPP1BPPP/R1B2RK1 b - - 2 10
Black to move.
Themes: Kingside Attack Opening Mate in 1 
Puzzle rating: 548
Best move: Qxh2#