- Make a single loop with lines passing through the centers of cells, horizontally, vertically, or changing direction. The loop never crosses itself, branches off, or goes through the same cell twice.
- The continuous dotted lines between black cells or to the outer frame are “Gates.” The loop must pass all Gates, but a Gate can only be passed once.
- The loop starts from the cell with the open numbered circle and returns to this cell. The number in the open circle shows the number of Gates to go through.
- Numbers at the ends of Gates – in the black cells – show when the loop crosses the Gate. A Gate without a number may be crossed at any point in the loop. For example, a Gate with a “1” must be the first crossed (in one of the directions) from the cell with the open circle.
List of puzzles
- Double Choco
- Five Cells
- Ripple Effect
- Tentai Show