how to use math in chess


There isnt really any math in chess.
The computer 'sort of' uses math, but not in any way you can learn.
what it mostly does is look at every possible position after a considered move from where it is now *** and apply a score (math, is 8+5 better than 8+3 when forking a rook and a bishop? Its more complex than that, but a simple example here) to the move based on the best outcome from that. It then picks the move with the best score (math, is 40 > 25?).
Normal humans cannot do that -- we can't look at every position after a move out to the next 20 moves, the number of positions is insane in the midgame.
*** it actually discards some moves as stupid before bothering to evaluate all the outcomes. If the move gets it mated in 4, looking at alternatives to that is pointless. ("yea he can mate in 4 if he sees it, but lets assume he does not?!")

GM Larry Evans' method of static analysis - Chess Forums - Chess.com
Read my posts on the first two or three pages.

Chess is too complicated a game, and has too many variables involved for you to be able to use mathematical formulas to solve positions.
The most maths you will probably use is when you are seeing who has the most material in a position by adding up the number of pawns each side has and how many pieces, beyond that it is more a matter of abstract judgement and manipulating images in your mind (calculation).