Great game! The one thing is that being able to write notes of what cells might be is kind of useless if that makes all of your for-sure answers disappear
The change has been made.
The red flagged numbers will now remain visible even when answer-mode is selected. The only exception is that within an individual cell, if an answer has been entered the flagged numbers will be hidden. If the answer is deleted, the flagged numbers will be visible again.
Thanks for the input, and I hope this makes the game more enjoyable for you.