Chess puzzle (Advantage)
Opening: Reti_Opening, Reti_Opening_Advance_Variation
Moves: 1. Nf3 d5 2. c4 d4 3. b4 g5 4. Bb2 Bg7 5. Nxg5 e5 6. Ne4 f5 7. Nc5 Ne7 8. g3
O-O 9. Bg2 e4 10. d3 b6 11. dxe4 *
Position (FEN): rnbq1rk1/p1p1n1bp/1p6/2N2p2/1PPpP3/6P1/PB2PPBP/RN1QK2R b KQ - 0 11
Black to move.
Themes:  Middlegame  
Puzzle rating: 1140
Best move: bxc5