Rules of Yajirin

• Draw a line to make a single loop.
• Squares with numbers and arrows tell you how many black squares are between that square and the edge of the grid.
• Other squares must either have a line running through it, or be blacked out.
• The loop cannot branch or cross over itself.
• You cannot have two black squares touching each other. (Diagonal is OK)

Controls

• Click in the middle of a square to toggle between blank, black and 'dot'
• 'Dot' can be used as a hint to indicate which squares must contain a line and cannot be blacked out.
• Click between squares to add or remove a line.