Chess puzzle (Advantage)
Opening: Sicilian_Defense, Sicilian_Defense_Kveinis_Variation
Moves: 1. e4 e6 2. d4 c5 3. Nf3 cxd4 4. Nxd4 Qb6 5. c3 Nc6 6. Be3 Qxb2 *
Position (FEN): r1b1kbnr/pp1p1ppp/2n1p3/8/3NP3/2P1B3/Pq3PPP/RN1QKB1R w KQkq - 0 7
White to move.
Themes: Defensive Move Opening  
Puzzle rating: 1860
Best move: Nb3