user21840: I have heard many times that while you're doing endgame studies,you should write your calculations,like candidate moves,variations.Is it really necessary?Can't i just check each variation one at a time in my head without having to write it down.

user24152: No.  You could do it if it helps you.
I would not waste the time writing it down when I could be using it to learn something else.

21840: <p>I have heard many times that while you're doing endgame studies,you should write your calculations,like candidate moves,variations.Is it really necessary?Can't i just check each variation one at a time in my head without having to write it down.</p>
 24152: <p>No.  You could do it if it helps you.<br />
I would not waste the time writing it down when I could be using it to learn something else.</p>
