ZELO Explanations

How do I compute my ZELO score?

Each player starts with a score of 1000 ZELO points.
After a game the new ZELO score for the winner and the new ZELO score for the looser (denoted by newW(elo) and newL(elo) respectively) are computed by the formula:
and int[x] stands for the integer part of the number x.


Match: root (1000) vs Zongo (1000),
Result: root wins 10-7
Thus we have: score=7, A=3, W(elo)=1000, L(elo)=1000 (before the game)
Formula now gives: root's new elo: 1000+12=1012; Zongo's new elo: 1000-12=988