MuseBlog Chess Ratings
Just for fun, we’ve decided to give players in our Chess Eternament numerical ratings based on the English Chess Federation (ECF) system. Whenever you finish a game, you get a new rating based on your pre-game rating, your opponent’s pre-game rating, and the outcome of the game. (Results below.)
It works like this:
0. Everybody who hasn’t completed any games yet starts with 100 points. When you finish a game:
1. Take whichever is less: your opponent’s pre-game rating, or your pre-game rating plus 40.
1. Take your opponent’s rating. If it’s more than 40 points higher or lower than yours, round it “toward” your rating so that it’s exactly 40 points higher or lower.
2. If the game was a draw, the number from (1) is your new rating. Otherwise,
3. Add 50 points if you won, or subtract 50 points if you lost.
4. If your new rating is a negative number, set it to zero.
For those of you who like formulas, it works like this:
for Rold < Ropponent:
Rnew = min(Ropponent, Rold+40) – 50 + 100*n or
for Rold > Ropponent:
Rnew = max(Ropponent, Rold-40) – 50 + 100*n
(where n = 1 for a win, 1/2 for a draw, 0 for a loss).
Here are MuseBlog’s ratings (for standard chess only) as of April 17, 2010:
Piggy: 160 points
bookgirl_me, Jakob Wonkychair, peary_moppins, cromwell, Purple Panda: 150 points
Ducky: 140 points
Keiffer, and anyone who is just starting out and hasn’t finished a game yet: 100 points
SudoRandom: 90 points
mas0n, TMFA, RoseQuartz, Tesseract, Pseudonym: 50 points
Kiga: 10 points
Date: April 17, 2010
Categories: Chess
