SudokuGGagi

## Description

. Difficulties range from beginner to expert
. You can solve difficult problems by using various auxiliary features.
\- Note function: The possible number can be written in small size.
\- Simulation: You can write down expected numbers in advance to see if they violate the rules.
\- Choice of various modes: Shaded display and auto-limit of input numbers are applied differently with three modes selected.
. The higher the difficulty, the higher the acquisition score. Getting five stars is harder than picking the stars in the sky.
Challenge yourself to the highest degree of difficulty.
You can check your ranking