Chess strategy according to Karpov

things to consider before making a move:

1) what is the material balance

2) are there any threats

3) how are the kings safety

4) pawn structure:

A) where are the open lines and diagonals

B) are there strong squares

C) who is controlling the center

D) who has most space on the board and where is it

5) which pieces are active and which are not