Chess puzzle (Checkmate)
Moves: 1. e4 e5 2. b3 Bc5 3. Bc4 Nf6 4. Qe2 O-O 5. Nf3 d5 6. Bxd5 Nxd5 7. exd5 e4 8.
Ng1 c6 9. dxc6 Qf6 10. Nc3 Nxc6 11. Bb2 Bg4 12. Qf1 Nb4 13. Rc1 Rfd8 14. Nge2
Rxd2 15. Kxd2 Qh6+ 16. Ke1 Rd8 17. Qg1 Qd2+ 18. Kf1 Bxe2+ 19. Nxe2 Qd1+ 20.
Rxd1 *
Position (FEN): 3r2k1/pp3ppp/8/2b5/1n2p3/1P6/PBP1NPPP/3R1KQR b - - 0 20
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 454
Best move: Rxd1#