Tents and Trees Puzzle
Tents and Trees Puzzle is a campsite planning job on a grid. Trees are already standing, and you must pitch exactly one tent for each of them while following a few strict spacing rules.
It is the Tents puzzle from Simon Tatham's Portable Puzzle Collection. Since it runs in a plain browser tab, it opens fine on school Chromebooks and phones alike.
How to play Tents and Trees Puzzle
Every tent goes in a square that shares a side with a tree. A tree that only touches it at a corner does not count. Each tree pairs off with its own tent, so the number of tents always equals the number of trees.
Tents need room. No two may touch in any of the eight directions, corners included. Numbers on the right edge and the bottom say exactly how many tents go in each row and column.
Click a blank square to pitch a tent. Right-click to mark grass, your note that no tent fits there. Right-dragging along a line marks a whole stretch as grass. Broken rules are highlighted, and the grid flashes when the campsite is done. If a board feels too hard, the Type menu also has Easy versions of each size.
Controls
| Action | Keyboard | Mouse | Touch |
|---|---|---|---|
| Place a tent or clear | Arrow keys, then Enter | Left-click a square | Tap a square |
| Mark grass | Space | Right-click | Press and hold |
| Grass a whole stretch | Shift + arrows | Right-drag along a line | Hold, then drag |
| Grass over squares, tents included | Ctrl + arrows | — | — |
| New puzzle, undo, redo | N, U, R | Buttons in the menu bar | Buttons in the menu bar |
Tips
- Mark grass on every square that has no tree beside it. Those can never hold a tent, and clearing them makes the board much easier to read.
- Rows and columns with a 0 are pure grass. One right-drag fills them.
- After each tent, grass all eight squares around it. Nothing else can go there.
- A tree with only one open side has to put its tent on that side.
- If a row needs two tents and only two separate spots remain, both are tents.
- Use the Shift and arrow keys to sweep grass along a line quickly when you play on a keyboard.
If you like Tents and Trees Puzzle, try these
Light Up Lamp PuzzlePlacing objects by neighbor rules carries over, setting bulbs so the room lights up without two facing each other.
Magnet DominoesRow and column counts guide placement in this one too, with plus and minus poles to balance.
Questions
Can a tent touch two trees?
Yes, a tent may sit beside more than one tree. It still counts as the partner of only one, so every tree needs its own tent somewhere.
How big are the Tents and Trees boards?
The Type menu offers 8x8, 10x10 and 15x15 grids at Easy or Tricky. Custom lets you pick any size.
Is there a way to check my work?
Rule breaks such as touching tents or wrong counts are highlighted as you play. The Solve button shows the full answer, and Undo lets you return to your own attempt.
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