Chess puzzle (Equality)
Moves: 1. Nf3 d5 2. d4 Nf6 3. Bf4 c5 4. dxc5 Nc6 5. a3 Bf5 6. c3 e6 7. b4 a5 8. e3
axb4 9. Qb3 bxc3 *
Position (FEN): r2qkb1r/1p3ppp/2n1pn2/2Pp1b2/5B2/PQp1PN2/5PPP/RN2KB1R w KQkq - 0 10
White to move.
Themes:  Middlegame  
Puzzle rating: 1564
Best move: Qxb7