Chess puzzle (Advantage)
Opening: Pirc_Defense, Pirc_Defense_Other_variations
Moves: 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. d5 Bg7 5. Bb5+ Bd7 6. Bxd7+ Nbxd7 7. Nf3 Nc5 8.
Qe2 O-O 9. O-O e6 10. dxe6 fxe6 11. Bg5 Qe8 12. Nb5 Qc6 13. e5 Nd5 14. exd6
cxd6 15. c4 Nf4 16. Bxf4 Rxf4 17. Ng5 Rb8 18. Nxe6 *
Position (FEN): 1r4k1/pp4bp/2qpN1p1/1Nn5/2P2r2/8/PP2QPPP/R4RK1 b - - 0 18
Black to move.
Themes:  Middlegame  
Puzzle rating: 1834
Best move: Re4