Number placement (sudoku) is a puzzle which object is to fill all grids with numbers so that each column, each row, and each of the 3×3 sub-grids contains all of the numbers from 1 to 9.
In this application, you can play 5 puzzle types (the 9x9 grid, the 8x8 grid, the 6x6 grid, CROSS and GEO) in all.
As the name suggests, the 8x8 grid fill a number of 1-8, and the 6x6 grid fill a number of 1-6.
CROSS fill the diagonal lines.
GEO is different in shape of sub-grid from usual number placement.
"Num-Pure!Vol.3" include 100 puzzles (emphasis on hard level) in each type, a total of 500 puzzles.

[Features]
1. Include 5 puzzle types (the 9x9 grid, the 8x8 grid, the 6x6 grid, CROSS and GEO)
2. Note the multiple numbers in one grid
3. Save or load each puzzle
4. Highlight number individually (you can change the color at option)
5. The operation log (up to 100 times)
6. Search the duplicated numbers
7. Show the relationship of the number