To play blindfold, go to your live chess settings (at the top right corner of your screen in live chess) and select blindfold as your pieces style.
To play against one of our computers, go to the Games tab, then to players, find Computer1-Easy (or whichever difficulty you'd like) and click play :)
i saw in live streams and youtubes people playing in live chess blindfold chess and chess against computers, how can i do that too?