Sketch Picross2 (Nonogram)

To complete the whole picture, you may solve nonogram puzzle one by one. - O button: Find the square Touch or drag. - [X] button: Touch or drag, you can search for empty space. - [Delete] button: I will erase the O and X. - Undo button: I will restore the O and X to its previous state. I will remember before the 100 times. - Tips button: me looking for something square. - When you exit the game, even out on the map, will the current state is "auto-save". - Map Type : 5X5 , 10X10, 15X15, 20X20