The penalty for making an error in a puzzle is 1 minute for your first mistake, which doubles every error until you hit 8 minutes for each mistake max. Considering they expect you to finish the levels between 1 and 5 minutes total, this is incredibly harsh, and basically requires you to not make any errors if you want to beat par. This patch lowers this penalty - now your first mistake only costs 10 seconds, and it doubles in the same fashion until you hit 40 seconds maximum.
ROM / ISO Information:
Database match: Pokemon Picross (Japan) (Proto)
Database: No-Intro: Game Boy/Color (v. 20210227-015730)