You need to score three GM 'norms' - I think in a set period of time (3 years, or something) - in slow play OTB tournaments.
A norm is achieved where you have:
- played 9 games against FIDE rated opposition
- At least three of whom were GMs
- And at least 50% of the opposition held FIDE titles (FM, IM, GM)
- Achieved a performance rating over the 9 games of 2601 or higher
In addition, I think you need a FIDE rating of over 2500 before applying for the title - though once you have the title, it is for life, even if your rating later falls.
I think these are the official rules:
The average rating of the players in a tournament was used to assign the event to a category. A title norm was earned whenever a minimum percentage score for that category was achieved. For example, in a category 10 event (with an average rating of the participants in the range of 2476 to 2500), a GM norm required a 67% score, an IM norm a 47% score, and a WGM norm a 40% score.
The current regulations require that a GM title can be obtained by achieving two or more GM results (norms) 'in events covering at least 24 games (30 games without a round robin or Olympiad) and a rating of at least 2500 in the FIDE Rating List current at the time the FIDE Congress considers the application, or within seven years of the first title result being achieved'. The IM title requires two or more IM results and a rating of at least 2400.
Sir Lot.
