Chess puzzle (Checkmate)
Opening: Queens_Pawn_Game, Queens_Pawn_Game_Steinitz_Countergambit
Moves: 1. d4 d5 2. Bf4 c5 3. e3 Nc6 4. dxc5 e5 5. Bg3 Bxc5 6. Nf3 e4 7. Nd4 Nf6 8. Bb5
O-O 9. Nxc6 Qb6 10. Nxa7 Bg4 11. Qd2 Rxa7 12. c4 dxc4 13. Bxc4 Rd8 14. Qc2 Qxb2
15. Qxb2 *
Position (FEN): 3r2k1/rp3ppp/5n2/2b5/2B1p1b1/4P1B1/PQ3PPP/RN2K2R b KQ - 0 15
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 889
Best move: Rd1#