Funny Box

This is a fun box entertainment software with rich playing methods.
There are three different and wonderful modes.
1. We will generate a Sudoku game for you. You can try to complete it. If you think the difficulty is not appropriate, you can also adjust the difficulty in the settings in the upper right corner.
2. We generate two different color squares for you. The two colors are very similar. You need to find more different color squares in the specified time.
3. We will generate four different color squares, but there are two kinds of squares that only occupy one square. You need to find them in the specified time.