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.
Arrow Web
Author: Andrey Bogdanov
Blacken some cells in the grid so that each arrow (including blackened) shows to exactly one blackened cell.
Grid control: Click the mouse button at the selected cell to change the color of the cell. More details about grid control are at the help page.