With the strong threat of 9 b6, which obliges Black to take radical measures.
8...Nxc5 9.b6 Qb7 10.Qb5! Ra8 11.Rxa8 Qxa8 12.dxc5 Qa1+ 13.Kh2 Qxe5+ 14.g3
A complex position has arisen, where Black's active pieces and the misplaced knight on a4 seem to compensate for the material deficit.
Tying the knight on b6 to the defence of the c4-pawn to prevent ...Nc8 and ...b7-b5.
6...Rd7 7.Nf1 Rfd8 8.Ne3 Kh8 9.Qb2 g5?! 10.Rf1 cxb3 11.axb3 Rg8 12.Bd3 Qf8 13.Ne2