In view of Black's plan, White improves his queen.

4...fxe6 5.Qc3+ , preparing Rxe6 with a strong initiative.

Intending a4-a5 with a second front. White is clearly better.

Restricting the knight on b8.

In order to double rooks at some moment. Black can hardly undertake anything.

A key move that keeps up the pressure.

Exploiting the fresh protected square. Meanwhile, Black still can't develop his knight or queen's rook.

Swapping the defender on e6.

Black resigned.