WIM norm

A WIM norm is a tournament performance that satisfies the requirements of FIDE, the International Chess Federation, for the Woman International Master title, abbreviated WIM. Like any title norm, it certifies a particular result; by itself it does not award the complete title. A FIDE rating is a number that estimates a player's competitive strength from her results.

FIDE measures the performance with a performance rating , a figure derived from the player's score percentage and the average rating of her opponents. For a WIM norm, the performance must be at least 2250 , and the opponents' average rating must be at least 2030 . The event must also satisfy conditions involving its format, number of games, federation representation, and the titles held by opponents.

Titled opponents

At least one third of the opponents, with a minimum of three, must be WIMs, WGMs, IMs, or GMs. WIM and WGM are the women-specific Woman International Master and Woman Grandmaster titles; IM and GM are open titles. FIDE also imposes a broader minimum proportion of recognized title holders in the opponent field.

Under the ordinary norm route, the WIM title requires norms covering at least 27 games and a FIDE rating of 2200 reached at some point. Some designated championship results can award direct titles or direct norms through a separate route. The formal title application is the record used to verify that the requirements have been satisfied.