speaking of the algebraic notation, i would like to suggest some css tweaks to make it clearer that the plys are clickable.
cursor:pointer comes to mind.
another css change i request: please replace the bike and ped icons for fast/slow with dear/snail, as in the prototype. turtle would be even better.

peace.

Change #1019944 had a related patch set uploaded (by Wugapodes; author: Wugapodes):

[mediawiki/extensions/ChessBrowser@master] Add game result to end of notation

https://gerrit.wikimedia.org/r/1019944