Chess puzzle (Checkmate)
Opening: Slav_Defense, Slav_Defense_Exchange_Variation
Moves: 1. d4 c6 2. c4 d5 3. cxd5 cxd5 4. Nc3 Nc6 5. Nf3 Bf5 6. e3 e6 7. Bd3 Bg6 8. O-O
Bd6 9. Bxg6 hxg6 10. Qb3 Qc7 11. Nb5 Bxh2+ 12. Nxh2 *
Position (FEN): r3k1nr/ppq2pp1/2n1p1p1/1N1p4/3P4/1Q2P3/PP3PPN/R1B2RK1 b kq - 0 12
Black to move.
Themes: Kingside Attack Opening Mate in 1 
Puzzle rating: 508
Best move: Qxh2#