Chess puzzle (Checkmate)
Opening: Indian_Defense, Indian_Defense_Other_variations
Moves: 1. d4 Nf6 2. Bf4 g6 3. e3 Bg7 4. Bd3 O-O 5. Nf3 d6 6. Nbd2 Re8 7. Qe2 Nc6 8.
O-O-O Nb4 9. Bc4 a5 10. a3 Bf5 11. e4 d5 12. exf5 dxc4 13. fxg6 hxg6 14. axb4
axb4 15. Nxc4 Nd5 16. Bd2 *
Position (FEN): r2qr1k1/1pp1ppb1/6p1/3n4/1pNP4/5N2/1PPBQPPP/2KR3R b - - 2 16
Black to move.
Themes:  Middlegame Back Rank Mate, Mate in 1 
Puzzle rating: 851
Best move: Ra1#