Example puzzle
This is an example puzzle. You can solve it the same way as you would solve competition puzzle, but result never stored. You can reveal an answer for the puzzle by clicking "Show answer" link.
Hungarian Pentomino
Author: Andrey Bogdanov
Place the given pentominoes into the grid. Pentominoes may be rotated and reflected. Elements can not touch each other, not even diagonally. All painted cells belong to pentominoes and indicate every third cell used by pentominoes scanning the grid row by row from left to right.
Grid control: Click the mouse button at the selected cell to change the color of the cell. You can also click on the given elements to mark them out. More details about grid control are at the help page.