ELO System

[Naviary2]

Discussion on what algorithm we should use is here.

The ELO system is waiting on these features:

• Infinite move distance. "Truly infinite move distance" #25 (We can't have players moving so far to break the game in rated matches)

• Highlighting squares, line drawing, and snapping. Add square highlights and arrow drawing on the chessboard #149 (To make it easy to line up attacks from extremely far away without having to spend 2 minutes locating the exact square you need. With a leaderboard system, I personally do not want the only reason "extremely far" moves are strong to be because your opponent simply does not have time to find the exact square to line up an attack on it.

Optional: A proper database setup #7, with a table for storing players' elos in various variants.

And then a required feature for releasing elo ranked mode is a new leaderboard page that displays the top ~100 rankings or so, and displays what place you are in across all members! This page needs to be compatible with showing multiple leaderboards for several variants.

The functionality for ranked matches I may merge first, if it is completed first, but actually enabling ranked we should have this page made before then.