Chess puzzle (Equality)
Moves: 1. d4 d5 2. c4 Bf5 3. Nc3 e6 4. Nf3 f6 5. cxd5 exd5 6. Qb3 Ne7 7. Qxb7 Nbc6 8.
Qb3 Rb8 9. Qd1 *
Position (FEN): 1r1qkb1r/p1p1n1pp/2n2p2/3p1b2/3P4/2N2N2/PP2PPPP/R1BQKB1R b KQk - 4 9
Black to move.
Themes:  Opening  
Puzzle rating: 1799
Best move: Nb4