Simple Loop
Loop by u ndefined is a puzzle game where you draw a single loop that passes through all unshaded cells.
How to Play
Draw lines by dragging between unshaded cells. To win, these criterias must be met:
- There are no intersecting, branching, or dead-end lines.
- The loop must pass through all unshaded cells.
- There is only one loop.
The game will mark errors when found.
Tips and Tricks
In every solved Simple loop puzzle, there are always 2 lines going through a cell. Therefore these basic deductions can be made:
Using the only one loop rule, this basic deduction can also be made:
In solving harder Simple Loop puzzles, a bit of visualization must be made. Take a look at this common pattern:
Basic deductions are shown.
Now imagine there was no line (indicated by ×) in the above picture. Then, this is forced to be a single loop. Therefore there must be a line here:
You can do chains of deductions using this logic:
Imagine there was no line here. Then it is forced to be a single loop once again:
Similarly:
Basic deductions shown.
With the cross mark shown above, the loop is forced to close with incomplete cells.
Another pattern that might show:
Basic deductions applied.
With cross mark shown, lines get forced like this, and the marked cell (in red) can only have dead-end lines, giving this:
Lastly:
Basic deductions.
Without a line here (×), the marked cell becomes a dead-end:
