Headache but still fun

It's amazing that you're concentrating so hard it's giving you a headache! It's so cool to see you so immersed that you lose track of time. I'm cheering you on to conquer today's difficulty as well!🍀

I can't really do more than two Sudoku puzzles before I'm done.

Sudoku is a really brain-intensive game, isn't it? Seeing as even parents who block games allow Sudoku.