Fencer: Thankyou for this enhancement. I look forward to seeing a game in which it applies. This will save a lot of unnecessary discussion about poor sportsmanship and the like, I'm sure.
Andersp: Well we have two of the four problems resolved, but until there is a more realistic rating system, people who chase ratings will clsuter at the top and play each other rather than risk losing a lot of points in a single game. But once this is fixed and the cube is implemented, ther will be a lot of very happy people, I know!
alanback: Yes, I've begun to do that with some of my regular opponents - we even play 10 wins matches. (It would still be better with the cube and a decent rating system though )
The rating system, while not the best, is not as bad as all that. Remember that the ratings have bunched up as a result of the luck in the game, and as such the expected winning %age between players of differing ratings should be accurate.
In other words if a player is still rated low with this system, they must be terrible indeed and you should lose points if they beat you.
And one more thing: In chess tournaments winner and players with same ammount of points as winner dont loose rating. So, in case BKR will be counted on the end of tournament (or section) this rule will be aplicable and higher rated players can play much more tournaments.
There was mentioned chess rating isnt good for backgammon. Chess rating is calculated after tournament. And winner (or whatever else w/ same ammount of points) cant lose his rating. Say, there is tournament where is playing player A w/ rating 2100 and thre other players w/ ratings around (B, C and D) 1900. Player A must earn 75% of points to save his rating. Say players ABC beat player D and rest of games are draw. Then player A has 2pts, so he is losing rating. But due to rule mentioned above he is losing nothing.
I suggest implement this rule to protect higher rated players.
lukulus: This is in effect for individual games I believe. This site calculates after each game, since tournaments can take years and it would render ratings meaningless if the site waited for the end to calculate.
I've looked around for precise definitions, but couldn't find any. But the jellyfish match format (*.mat) is very human readable, and could be learned by example. On http://www.nbgf.no/matches/ we have some matches in mat format. If anything is unclear, the matches are also available in html format with board images. If you need more, I'll send you some. If there is any situations unaccounted for, I'll send you some with those situations. gnubg is good for testing. And also for playing matches and exporting them in mat format for more examples.
Jellyfish .MAT format is the best of cource! For specification of it, don't try, i have looked in the past for one, without success.....
But it's very easy to understand the way it works, which is very simple, by looking some games. I will try to write the description of .MAT format if you are lazy.......
Any volunteers who would test this option with me? I don't want to release it until at least several games are played and most of the situations checked.