This looks familiar because you saw it in Good Will Hunting - in the scene where Will is explain to Skylar that he can "see" math problems the way that Beethoven can "see" the music. Just to the right of this is where there are a handful of chess tables that are constantly occupied when the weather is warm. (I was there on a cold day with intermittent snow squalls, so no outside diners!)
Unfortunately, sitting at these tables does not allow you to "see" the solutions to complicated math problems like Will Hunting. I know because I've tried. ;) You can, however, "see" some delicious pumpkin soup at Au Bon Pain every fall!