Chess puzzle (Checkmate)
Opening: Russian_Game, Russian_Game_Stafford_Gambit
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6 4. Nxc6 dxc6 5. Be2 Bc5 6. d3 Qd4 7. O-O O-O 8.
Nc3 Bd6 9. Be3 Qe5 10. d4 *
Position (FEN): r1b2rk1/ppp2ppp/2pb1n2/4q3/3PP3/2N1B3/PPP1BPPP/R2Q1RK1 b - - 0 10
Black to move.
Themes: Kingside Attack Opening Mate in 1 
Puzzle rating: 638
Best move: Qxh2#