Frequently Asked Questions (FAQ)

Here are answers to the most frequently asked questions about the TTW rating, the calculation system, and connection.

How does the rating change? expand_more

In short

Ratings change only after completed, valid games. A win gives a boost, while a loss removes part of that same value. Beating a stronger opponent changes the rating more noticeably. Technical results do not count toward rating.

If you want the exact math, there is a “Details” block below.

Details: how is the rating calculated? expand_more

The idea is simple: a win over a stronger opponent is worth more, and a win over a weaker opponent is worth less. A loss does not cancel the full amount, only part of it. This keeps the rating both motivating and sensitive to the quality of wins.

Exact formula:

  • RatingWonNew = RatingWonCurrent + Delta
  • RatingLostNew = RatingLostCurrent - Delta / 2
  • Delta = max(0, 100 - RatingWonCurrent + RatingLostCurrent) / 10 * KT
  • KT = max(0.2, round(R.avg / 200) / 10), where R.avg is the average rating of the tournament participants.

If the winner's rating is more than 100 points higher than the loser's rating, the delta becomes zero.

How do I connect my club to the TTW rating? expand_more

To connect a club, you must complete the official application on the "Connect Club" page. Applications are accepted only from club administrators.

After reviewing your application, we will provide access to the admin panel.

I noticed an error in my information (name, club, results). How do I fix this? expand_more

Only the organizer of the tournament where the error occurred, or your club administrator, can edit personal data and tournament results in the TTW system.

Please contact them directly. This will ensure the changes are correct and confirmed.

Is the rating updated immediately after the tournament? expand_more

Yes, instantly. As soon as the tournament organizer enters and confirms the final result in the system, the algorithm Automatically recalculates the ratings of all involved players. Changes are displayed on the website immediately after saving.