from:
Quoted from IB_Agilulfus:
P = 1/(1+10^(-D/100))
where D is the difference in ratings: winner-loser
Score earned is K(1-P)where K are the points at stake, the winners gains the points the loser loses them.
Hope this helps.
This is a table showing showing some figures calculated for 1v1:
The first colum is the rating points difference, the second shows the points gained and lost if the higher rated player wins. The third shows the points gained and lost if the lower rated player wins.
Rating Diff________Points Gained / Lost
0___________20.00000000__________20.00000000
10__________17.70753465__________22.29246535
20__________15.47452719__________24.52547281
30__________13.35442302__________26.64557698
40__________11.38988996__________28.61011004
50__________9.610122934__________30.38987707
60__________8.030400357__________31.96959964
70__________6.653501233__________33.34649877
80__________5.472275544__________34.52772446
90__________4.472630791__________35.52736921
100_________3.636363636__________36.36363636
110_________2.943502245__________37.05649776
120_________2.374037724__________37.62596228
130_________1.909068841__________38.09093116
140_________1.531460155__________38.46853984
150_________1.226137201__________38.77386280
PS How do I enter a table which looks better than this monster?
"There is no such thing as 'right'" - Sir Simon Rattle
" ... but there is such a thing as 'wrong'" - Norman[This message has been edited by Dr_Do_Nothing (edited 01-23-2003 @ 07:44 AM).]