| 1. It was Grandmaster Anand Viswanathan (India) who proposed to use the rule of 350 points in rating difference.
2. FIDE considers the rule of 350 points in rating difference to be more fair in Elo calculation.
3. The following is a simple example when the rule is used:
- Case 1: Player C is rated 2000 (weaker) and his opponent 2420. The rating difference is 420 (2420-2000), more than 350 points.
- Case 2: Player C is rated 2000 (stronger) and his opponent 1600. The rating difference is 400 (2000-1600), more than 350 points.
4. FIDE will calculate Elo results for Player C:
- in Case 1: As though the opponent of Player C was rated 2350.
- in Case 2: As though the opponent of Player C was rated 1650.
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