Chess puzzle (Advantage)
Opening: Slav_Defense, Slav_Defense_Three_Knights_Variation
Moves: 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 Bf5 5. e3 e6 6. Bd3 Bxd3 7. Qxd3 Bb4 8. O-O
O-O 9. a3 Bxc3 10. bxc3 Nbd7 11. cxd5 cxd5 12. Rb1 Nb6 13. Re1 Re8 14. e4 e5
15. exd5 *
Position (FEN): r2qr1k1/pp3ppp/1n3n2/3Pp3/3P4/P1PQ1N2/5PPP/1RB1R1K1 b - - 0 15
Black to move.
Themes:  Middlegame  
Puzzle rating: 1357
Best move: e4