6.gxf3 would be better, although after 6...a4 White is also suffering, but now he loses on the spot.

White resigned.

Initiating a series of exchanges that will facilitate the advance of the passed pawn.

4...Ra8 5.Qxd3 Qxd3 6.Rxd3 Be7 7.Re3! +-

Black resigned.

Preparing ...Nc4-d6 with a firm blockade of the passed pawn.

Now Black gets considerable activity.

Black's clever knight regrouping has enabled the idea of a central break with ...e5-e4.

With a strong initiative thanks to the excellent knights. In contrast, the passed pawn on d5 has completely lost its potential.