How do I prepare for the competition?

First of all, before a competition, you need to think about your health.
I start my chess training by reading the literature.
Next, I prepare the opening schemes that I intend to use in the upcoming competition.
I have to play practice games and pay attention to the clock first and foremost.
And finally, five days before the tournament, I have to stop all chess practice.

What is the art of a chess master?
Mostly in the ability to analyze chess positions; however, a master, sitting at the board, must be able to analyze quite quickly and without moving pieces, but in the end, calculating options for assessing a position is the art of analysis.

What distinguishes a combination from a maneuver? - Sacrifice.
What is a combination? A combination is a forced option with a sacrifice.
A combination should not be confused with a forced maneuver.
What is the difference between a combination and a forced maneuver?
A forced maneuver is a forced option without a sacrifice.