White is trying to weaken the dark squares in the opponent’s camp, so as to organise an attack on the king. But, the weakening of his own construction is something he has not noticed, and Black begins to land counterblows on the light squares:

After 18.Nc3, White has to lose precious time to regain the central pawn: 18...fxe5! 19.Rd1 Be8! (the right square to keep the d5-pawn under attack) 20.Ne4 Rc8 21.Qxe5 Rf5!, and ...Rf5xd5.

This move is not so easy to spot from a distance, when playing 17.e5.

White resigned.

The white Nd4 is clearly loose. It is not hard to see that it covers the f3-square. Thus, Black found the idea...

The most tenacious.
If the sacrifice is accepted, then after 21.gxh3 Rad8 22.f4 Rxd4 23.fxe5 Qxe5 24.Re2 Re6, followed by ...Rg6+ and ...Ne6, all Black’s pieces are attacking, and this attack assumes a decisive character.

As a result of the tactical operation, Black has won a pawn without any compensation. In addition, the white king is weak.

Unfortunately, Black lost a significant part of his advantage in time-trouble, by choosing the prophylactic 29...Kh7. Later, after mutual time-trouble mistakes, White missed a chance to win, and the game was eventually drawn.

With a winning position.

The battle is mainly taking place on the light squares. At the same time, the black king finds himself in an unpleasant opposition on the diagonal, and there are also checks threatened on e7 or h6. Checks against the white king get nowhere, and so a strong move is...