Chess puzzle (Checkmate)
Opening: Nimzo-Indian_Defense, Nimzo-Indian_Defense_Classical_Variation
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 Na6 6. a3 Bxc3+ 7. Qxc3 Nxc5 8.
e3 O-O 9. Nf3 b6 10. b4 Nce4 11. Qc2 d5 12. Bd3 Ba6 13. cxd5 Rc8 14. Qe2 Nc3
15. Qf1 Qxd5 16. Ne5 Bxd3 17. Nxd3 Rfd8 18. Nb2 Qd1+ 19. Nxd1 *
Position (FEN): 2rr2k1/p4ppp/1p2pn2/8/1P6/P1n1P3/5PPP/R1BNKQ1R b KQ - 0 19
Black to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 839
Best move: Rxd1#