Chess puzzle (Equality)
Moves: 1. c4 Nf6 2. Nc3 d5 3. d4 c6 4. Nf3 Bf5 5. Qb3 Qb6 6. c5 Qc7 7. Bf4 Qc8 8. Qa4
e6 9. h3 Be7 10. e3 O-O 11. Be2 b6 12. b4 b5 13. Nxb5 *
Position (FEN): rnq2rk1/p3bppp/2p1pn2/1NPp1b2/QP1P1B2/4PN1P/P3BPP1/R3K2R b KQ - 0 13
Black to move.
Themes:  Middlegame  
Puzzle rating: 1731
Best move: cxb5