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.