Arrows rules
How to play Arrows
Shade some cells that are not arrow clues so they never share an edge. Draw one loop through every remaining open non-clue cell. Each arrow counts shaded cells along its line to the border.
Worked example
Use Next to follow each deduction from the starting clues to the finished board.
Arrow cells stay unshaded and outside the loop. Each number counts shades in the arrow's direction to the border. Every other unshaded cell needs two loop connections.
- Arrow cells stay unshaded and outside the loop. Each number counts shades in the arrow's direction to the border. Every other unshaded cell needs two loop connections.
- Each 1-arrow has two possible cells. Shading the outer one would leave the inner cell with only one loop exit, so shade the four inner cells. The 0-arrow also marks the far-right cell clear.
- Every clear non-clue cell needs two loop neighbors. Along the top and right border, only the neighboring border cells are available, so those segments are forced.
- Close the loop along the bottom and left. Shaded cells and arrow cells stay outside it.
Rules
- Arrow cells are unshaded clue cells. The loop never enters them.
- Every other cell is either shaded or visited by the loop.
- Shaded cells may touch at corners, but never share an edge.
- The loop moves up, down, left, or right through cell centers. It does not branch or cross, and it forms one closed loop.
- An arrow counts all shaded cells along its row or column in the pointed direction, continuing to the border. Other clue cells do not stop the count.
Common mistake
An arrow counts shaded cells in its pointed direction, continuing to the border. Another arrow does not stop the count, and the loop never enters a clue cell.
Controls
Drag through playable cell centers to place several loop segments in one stroke. Tap near a segment midpoint to cycle empty, line, and marker on that edge. Tap a non-clue cell body to cycle empty, shade, and marker. Arrow cells cannot be shaded or joined to the loop. On a keyboard, Shift-click places or clears a marker only.