A clever attack on Black's pawn chain.

1...cxb4 2.c5! with similar consequences.

The simplest follow-up, in order to recover the pawn at once, after which the bishop pair becomes terrific.

With the decisive threat of 10.Qd4.

Black resigned.

A strong advance that will leave Black in command of the centre.

Heading for the protected square at d3.

5.Nxe4 Nxe4 6.Qxe4 Nf3+ 7.gxf3 Rxe4 8.Rxe4 Qd8 -+

A tactical slip in time trouble.
After 6.Nb5 Rd7 7.Bxe5 Rxe5 Black remains on top, but his strong knight is gone.