Chess puzzle (Checkmate)
Opening: Semi-Slav_Defense, Semi-Slav_Defense_Other_variations
Moves: 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. Qc2 dxc4 6. a4 Bb4 7. e4 b5 8. Bg5 h6
9. Bh4 g5 10. Nxg5 hxg5 11. Bxg5 Qxd4 12. Rd1 Qxe4+ 13. Qxe4 Nxe4 *
Position (FEN): rnb1k2r/p4p2/2p1p3/1p4B1/Pbp1n3/2N5/1P3PPP/3RKB1R w Kkq - 0 14
White to move.
Themes:  Middlegame Mate in 1 
Puzzle rating: 451
Best move: Rd8#