There is no defence against the Rf1 being brought in, so Black resigned.

The Bd5 is X-rayed by the Bg2, but defended by the Ne7. With the help of a piece currently standing on the edge of the board, White gets through to the target:

It should be noted that, in such positions, a knight on h4 has no other prospects than a possible jump to g6.

The light squares in Black’s camp are creaking, and so he is defenceless.

Black resigned.

Black has incautiously placed his queen on c7, which White exploits:

White has not only an extra pawn, but an active rook, which is no less important.

Now, the advance ...a6-a5 is impossible, and the black rook remains in a passive position.

This attempt to get active is doomed to failure, since he has no targets on the kingside – the f2-pawn is not only defended, but ensures an excellent post on e3 for the bishop.

With the help of a tactical blow, White ensures himself a pair of connected passed pawns on the queenside. However, even one passed pawn, supported by the bishop, should be enough to win.