There seems to be a bug where if A is held down before entering the menu then it is still possible to interact with the board.
And then further it is possible to exit the menu with the palette remaining dimmed and play the game that way.
I can’t always reproduce it exactly, but the sequence in the video is roughly:
In the video A -> Start -> Left/Right -> Left -> Down -> Right -> A Released -> Left -> Right A Pressed + Released
