Chess puzzle (Checkmate)
Opening: Nimzo-Indian_Defense, Nimzo-Indian_Defense_Spielmann_Variation
Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qb3 Bxc3+ 5. Qxc3 d5 6. Bg5 dxc4 7. Qb4 Qxd4
8. Rd1 Qe5 9. f4 Qf5 10. Nf3 Nd5 11. Nh4 Nxb4 *
Position (FEN): rnb1k2r/ppp2ppp/4p3/5qB1/1np2P1N/8/PP2P1PP/3RKB1R w Kkq - 0 12
White to move.
Themes:  Opening Mate in 1 
Puzzle rating: 1161
Best move: Rd8#