Black resigned.

Restricting the knight on h6.

1.e6? Nf5! 2.Qc2 g6 with counterplay for Black, whose knight has an excellent destiny on d4.

Preparing ...Rd4.

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.