Unless you already know all of the openings, trying to follow a sequence of 3 to 5 moves in rapid succession is frustrating and not very useful to boot. I would love to be able to slow the action down and take my time with each move, so I can actually commit these openings and their lines to memory. Thanks Devs...

I cannot get the game to run on Windows 10. It always crashes and shows a dialog with exclamation mark then closes itself. I tried switching between integrated and NVIDIA graphics card but it doesn't help.

Is there a way to force windowed mode instead of full screen? thanks

What do the different colored checkmarks mean on the menu page after you've completed the lessons? (FYI, some of them appear bluish-purple and some appear pinkish-purple.)

it worked , and now it doesn't