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.
Tents
Author: Andrey Bogdanov
Place tents to some empty cells so that tents don't touch each other even diagonally. Pair each tent with a tree adjacent horizontally or vertically. This should be a 1 to 1 relation. The clues outside the grid indicate the number of tents in the corresponding row or column.
Grid control: Click the mouse button at the selected cell to add/remove a tent. Additionally you can connect tents and tree with lines which don't affect correctness check. More details about grid control are at the help page.