Chess puzzle (Checkmate)
Opening: Russian_Game, Russian_Game_Nimzowitsch_Attack
Moves: 1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. Nc3 Nxc3 6. dxc3 Be7 7. Be3 O-O
8. Qd2 Be6 9. O-O-O Bxa2 10. b3 a5 11. Kb2 a4 12. Kxa2 axb3+ 13. Kxb3 c5 14. c4
Qb6+ 15. Kc3 *
Position (FEN): rn3rk1/1p2bppp/1q1p4/2p5/2P5/2K1BN2/2PQ1PPP/3R1B1R b - - 2 15
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 1803
Best move: Ra3#