Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Alapin_Variation
Moves: 1. e4 c5 2. c3 e6 3. d4 cxd4 4. cxd4 Bb4+ 5. Nc3 Qc7 6. Bd2 Nc6 7. a3 Ba5 8.
Nf3 Bb6 9. Be3 Nge7 10. Bc4 Na5 11. Bd3 Nc4 *
Position (FEN): r1b1k2r/ppqpnppp/1b2p3/8/2nPP3/P1NBBN2/1P3PPP/R2QK2R w KQkq - 9 12
White to move.
Themes:  Opening  
Puzzle rating: 1379
Best move: Nb5