Some people think that the art of chess master is only that they can calculate a large number of variations and many moves in advance. The distance and the exact budget is something that is indisputably important, moving parts from one square to the other in thought.
Experienced gamers move these moves in their minds to adjust the theory to themselves.
No one, but no one can calculate all the variants.
If the game does not have a forced character, it is a positional game. If after a successful position game, one of the opponents will probably enter into the opponents camp, and then the game takes on a forced character. There are favorable conditions for combinations, narrowing possible variations and a chaotic position for someone from the opponents, and this surrenders because of big material losses or even the mate.