A tree with only one square left beside it that could hold a tent gets its tent there. Look for trees whose other neighbours are grass, other trees, or the edge of the grid.
This is one of the Tents techniques. Each page shows its technique on the same 10×10 from the game, Hard level 3.
The rule
- Pick a tree that doesn’t have a tent beside it yet.
- Check its four neighbours. Cross off grass, other trees and the edge of the grid.
- If only one square is left, put its tent there.
In a real puzzle
On the 10×10, it’s first needed at step 7. The tree in row 2, column 7 has only one square left beside it: row 1, column 7, above it. Its tent goes there.
How often you’ll need it
On 4 of the 50 Easy levels, 21 Medium and 43 Hard: 0.1 times per Easy level on average, 0.6 on Medium and 2.4 on Hard. It’s 1 of the 22 moves on the 10×10 here.