Slitherlink App

Slitherlink is a puzzle where one, and only one, complete circuit (or loop) is to be completed whereby all cells with numbers must have exactly that number of its sides being part of that circuit.

CONTROLS:

EDIT MODE (red tinted background)

'up' or 'down' to resize grid
'x' clears all clues
click on cells to enter clues (rotates among options)
'enter' to proceed to solving mode

SOLVING MODE (blue-gray tinted background)

Click between nodes to change state:
- left-click: toggles trail on/off
- right-click: toggles blocker on/off
'r' resets puzzle to starting state
'backspace' undoes last click action
'escape' returns to edit mode