# Numerical rating system

Please explain the numerical rating system. Thank you.

It is a rating system that uses numbers to represent relative likelihood of victory.

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Itâ€™s roughly the glicko-2 (as opposed to glicko-1) rating system as outlined by a pdf on this page: http://www.glicko.net/glicko.html

Itâ€™s essentially a modified ELO system with a few bits and bobs to make it more accurate (the most important being the existence of a Ratings Deviation variable).

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In go, rank numbers are estimates for finding a proper handicap for an even game. So if two players have ranks that are 5 numbers apart from each others, they should have pretty much the equal chances on winning when weaker player gets 5 handicap stones.
The actual ranks start from 30 kyu to 1 kyu, after which comes 1 dan to 9 dan.
You can think that 30kyu â€śknows the rules of the gameâ€ť and 1kyu being â€śalmost a strong amateurâ€ť where dan players are â€śstrong amateursâ€ť.

So ranks are basically just a tool to help players find balanced games.

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Or maybe you are just looking for more â€śliteralâ€ť answer?

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I should point out that this would display in a game, review, chat column etc. as 10k. Thatâ€™s because â€ś9.3kâ€ť is considered as â€ś0.3k weaker than 9k.â€ť

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