Picross 20X20 [ Nonogram]

Picross are picture logic puzzles in which cells in a grid must be colored or left blank according to numbers at the side of the grid to reveal a hidden picture.

**Game Rule**

The numbers are a form of discrete tomography that measures how many unbroken lines of filled-in squares there are in any given row or column. For example, a clue of "3 8 4" would mean there are sets of three, eight, and four filled squares, in that order, with at least one blank square between successive groups.

Features :

- All puzzles are free.

- Black and White and colored puzzle

- Auto fill line with'X' when you mark last number

- Hints

- Save game

- Tablet support