Chess puzzle (Advantage)
Opening: Semi-Slav_Defense, Semi-Slav_Defense_Chigorin_Defense
Moves: 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 c6 5. e3 Nbd7 6. Bd3 Bd6 7. O-O O-O 8. cxd5
exd5 9. b3 Re8 10. Re1 Ne4 11. Bb2 Qf6 12. Qc2 Qg6 13. Nxe4 *
Position (FEN): r1b1r1k1/pp1n1ppp/2pb2q1/3p4/3PN3/1P1BPN2/PBQ2PPP/R3R1K1 b - - 0 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 1118
Best move: dxe4