[Welcome to Sensei's Library!]

StartingPoints
ReferenceSection
About


Aliases (info)
InternetGoServer

Referenced by
GoServers
Shogi
SGFFile
RuiNaiwei
Tartrate
YangYilun
CGoban1
GGo
JiangZhujiu
IGSScoringModeTip
KGSWishlist
Yahoo
RankWorldwideComp...
FischerAndBronste...
GoServerDiscussion
NorthAmericanMast...
SixKyuNoseki
PandaEgg
CommunicatingWith...
SafetyPlay

Homepages
Barthoze
Bombay
EIKENHEIN
FredStrauss
Frs
Gernotti
Gimpf

 

IGS
    Keywords: Software

[ext] IGS, the Internet Go Server, is a real-time go server.

Connect your Go client (or telnet) to igs.joyjoy.net port 6969 or port 7777.

Temporary note: The IP address of IGS will be changed to 210.155.158.200 some time during the first two weeks of October 2003.


[ext] ratingstats lists 22,000 users:

    rank       users
  ---------  --------
   5+  dan     1,500
   4-1 dan     6,500
   1-9 kyu    10,000
   10- kyu     4,000


Tips (wanted)

What are IGS' conditions to increase the rated games counter of "stats <user ID>" ? I am not sure, if either a) only one (random) game within a 24h period counts (no matter how many games have been played within this period) or b) games against opponents below 26k do not count for the "rated game counter". Unfortunately IGS' help does not provide clear information about it. -- Frs, Jan 2003


Alex Weldon: The help files on IGS say that for a game to be rated, it must be played with someone who has a starred (*) rating, and the players must be within 3 ranks of one another (or play with a handicap high enough to bring them within 3 ranks).

I have a question of my own, though. Does anyone know what criteria IGS uses for determining whether you go up a rank, down a rank or stay the same? It seems to update your rank every 24 hours, but I fail to find any pattern to how it decides whether to change your rank, or not.

Sometimes I've played 5 games on a day, won 4 and lost 1 and had no change. Other times I've played 2, won 1 and lost 1, and gone up (or down) a rank. Is it taking several days worth of results into account?

Is it randomized in some way in order to prevent people who are overly concerted with ratings from choosing to stop playing on a given day at a time favorable to their rating (ie, after winning enough games to go up, stop playing for the day, and if losing enough to go down, keep playing until you get into the "no change" bracket, then stop)?


chtito: Everything is explained in this [ext] rating page of IGS.

To answer some of your questions: 1. the rating system is not randomized. It is the result of an optimization procedure and is thus completely deterministic. 2. games are taken into account during one cycle, which is said to be a week.


Nacho: I had an interesting (yeah, let's call it that) experience today on IGS. I sent match requests to two people, and both accepted!! I thought that it was not possible. Anyway, I had to play both games simultaneously (I didn't want to be rude to anyone), which obviously resulted in a 20 point loss in each game. Well, I think it was good practice, but my nerves can't resist another day like this. So, my question... how can avoid that happening again? Any tips? Thanks in advance! Well, now I think, I could add this to that page with the excuses for losing... what was the name?

Answer : Your command is: toggle singlegame on (or just resign one of the match, games within 20 moves won't count to your rating).



This is a copy of the living page "IGS" at Sensei's Library.
(OC) 2003 the Authors, published under the OpenContent License V1.0.