Originally posted by Phlabibit
Well, I guess any calculator could do it.
You need to know the win expentancy and the constant for your rating range. (Mine Constant is 32 since I am below 2100). If you know the formula, you can calculate easily yourself.
I am playing Korch 2288 rated player. 2288-1550=738 is our rating difference. So plug this into the formula to get the win expentancy.
1 / (10^(738/400)+1) = 0.0140876421. Let's say 0.014 for our purposes.
If I win (1-.014)*32 =31.552, so almost the full 32 points possible.
If I draw (.5-.014)*32 =15.552, nice points for a draw.
If I lose (0-0.014)*32 = -.448, my rating remains same.
It looks lokng but it takes a minute in a graphing calculator.