Chess puzzle (Checkmate)
Opening: Reti_Opening, Reti_Opening_Advance_Variation
Moves: 1. Nf3 d5 2. c4 d4 3. d3 Nc6 4. Bf4 f6 5. Nbd2 e5 6. Bg3 Nh6 7. Ne4 Nf5 8. Bh4
Bb4+ 9. Ned2 g5 10. Bg3 h5 11. h3 Nxg3 12. fxg3 Bf5 13. a3 Bd6 14. b4 e4 15.
dxe4 *
Position (FEN): r2qk2r/ppp5/2nb1p2/5bpp/1PPpP3/P4NPP/3NP1P1/R2QKB1R b KQkq - 0 15
Black to move.
Themes:  Middlegame Double Bishop Mate, Mate in 1 
Puzzle rating: 1015
Best move: Bxg3#