Round Trip
Draw one closed loop and match the edge clues for the nearest run in every row and column.
Controls
Draw a single closed loop through cell centres. The loop may cross itself straight through a cell, but it cannot branch, dead-end or reuse an edge. Numbers outside the grid give the length of the nearest unbroken run of loop cells in that row or column, counting inward from that side. Drag across cells to draw or erase edges, then use Clear to start over; the answer button reveals or hides the full loop.
Brain training · PuzGo