NumberPlace1000！

Are you on the way to your office or school? Time to play “NumberPlace”!
We’ve prepared four full-scale difficulty levels: Easy, Usual, Hard and Insane.

▼So, what the “NumberPlace” is?▼
It is a puzzle game, which contains a 9x9 grid with lines and rows of square fields also formed into 3×3 blocks.
All fields are needed to be filled with numbers from 1 to 9 so that the numbers will never duplicate in rows, lines and 3x3 blocks.
The rules are following:
① Fill into the blank fields numbers from 1 to 9.
② Each number can only appear once in a row or column.
③ 3×3 Block surrounded with a thick line may contain numbers from 1 to 9 only once with no duplication.

▼Useful features▼
・Save
・Notes
・Number duplication check
・Sound effects
・Music ON/OFF

※Problem of this application is the same content as the free version