What is Country Road?
Country Road is a Japanese loop puzzle published by Nikoli, the Tokyo puzzle house that also gave the world Slitherlink, Masyu and Yajilin. The grid is divided into bold-bordered rooms, and your goal is to draw a single closed loop through cell centres so that the road drives through every room exactly once: in through one border, out through another, never returning. A number in a room tells you exactly how many of that room's cells the road uses.
One more rule does quiet, powerful work in the background: when two cells sit side by side on opposite sides of a room border, they cannot both be left empty. Inside a room the road can skip as many cells as it likes, but along every border the countryside must stay connected to the road. Spotting what this rule forces is the heart of the puzzle.
- Draw one closed loop that travels horizontally and vertically through cell centres.
- The loop visits every room exactly once - it never re-enters a room it has left.
- A number shows how many cells of that room the loop passes through.
- Rooms without numbers can hold any number of road cells, as long as the loop still visits them once.
- Two empty cells may never touch across a room border.
- The loop never crosses or overlaps itself.
How to play Country Road online
Click or tap the gap between two neighbouring cells to lay a piece of road, and click it again to remove it. The coloured patches show the rooms; the small number in a room's corner is its cell count for the loop. Keep connecting segments until they close into one loop that obeys all three rules - the board congratulates you the moment your road works, even if it differs from the one the generator built.
Check marks anything that already breaks a rule, without giving the answer away. Hint repairs or extends your road with one segment from the generated solution, Undo steps backwards, and Solution lays down the full route when you want to study a finished road instead of building one.
- Tap between two cells to draw or erase a road segment.
- Check highlights rule conflicts; it never spoils the route.
- Hint removes a stray line first, then adds a correct one.
- Backspace or Delete erases the segment you placed last.
- New puzzle builds a fresh board for the selected size and difficulty.
Why the one-visit rule changes everything
Most loop puzzles give you local clues: a pearl forces a turn, an edge count caps a square. Country Road is different because its main constraint is regional. Once the loop enters a room it must do all of its business there in a single stay, so each room behaves like a corridor with exactly one doorway in and one doorway out. Counting doorways is the most reliable habit in the game: every room's border is crossed exactly twice, no matter how large or strangely shaped the room is.
That crossing count turns geography into logic. A room that touches the rest of the grid along only two short walls has very few candidate doors, and once a door is fixed, the path inside the room often has just one way to gather the required number of cells. Long, thin rooms are especially talkative: a 1xN room with a high number forces the road to run straight down its length.
- Every room border is crossed by the loop exactly twice.
- Treat each room as a corridor: one way in, one way out.
- Rooms with few border cells have few possible doors - start there.
- A full-number room (clue equals room size) uses every one of its cells.
- A clue of 1 means the road clips just one cell, so both doors share that cell.
The forgotten rule is your sharpest tool
Newcomers usually lose to the border rule, not to the loop itself. Because two empty cells can never face each other across a room boundary, every cell you mark as 'road-free' immediately commits its neighbour on the other side of the wall to carrying road. Strong players use this constantly: deciding where the road does not go is often faster than deciding where it goes.
The rule also explains why Country Road boards feel so alive. Empty space cannot pool along walls; it has to hide in room interiors. When a numbered room forces several empty cells, look at which of them are pressed against a border - each one fires a road cell into the neighbouring room, frequently fixing that room's doors for free.
- Marking a cell empty forces every cross-border neighbour to be used.
- Empty cells can only cluster inside a room, never across a wall.
- Low clues in big rooms create empty cells - check which walls they touch.
- A border cell whose cross-wall partner is empty must carry road.
- Chains of these deductions often solve whole corners before the loop closes.
Strategy: read the numbers like road signs
Start with extremes. A clue that equals the room's size floods the whole room with road, instantly fixing long stretches of the route and both doors. A clue of 1 in a multi-cell room is just as loud: the road touches a single cell, so that cell must sit on the room's border twice over - it needs both an entrance and an exit wall. Rooms whose clue equals their width or height often force a straight crossing.
Then think about parity and flow. The loop is one continuous circuit, so rooms cannot be visited in isolation: the exit of one room is the entrance of its neighbour. Follow forced segments across borders and let the road grow in both directions. If a partial road would have to re-enter a room it already visited to keep going, you have found a contradiction - back up and close that option off.
Finally, respect the closed-loop basics that Country Road shares with every loop puzzle: each used cell has exactly two road connections, dead ends are illegal, and a small premature circle that does not visit every room is wrong even though it looks tidy. The fun of the hard levels is that all three rule systems - numbers, doors and borders - must be juggled at once.
- Full rooms and 1-clue rooms give the strongest openings.
- Track entrance and exit pairs - exits feed the next room's entrance.
- Never close a small loop while unvisited rooms remain.
- Each road cell needs exactly two connections; no branches, no dead ends.
- When stuck, hunt for empty cells against walls and apply the border rule.
A name borrowed from a song
Nikoli has a tradition of playful names - Masyu means 'evil influence' thanks to a misreading, and Yajilin fuses 'arrow' with 'link'. Country Road wears its name in plain English, and most puzzle fans assume it tips its hat to 'Take Me Home, Country Roads', a song that is enormously popular in Japan and even anchors the Studio Ghibli film Whisper of the Heart. The image fits the rules beautifully: one quiet road winding through a patchwork of fields and villages, visiting each one exactly once before circling home.
Whatever the true inspiration, the puzzle first reached solvers through Nikoli's magazine Puzzle Communication Nikoli, the same proving ground that launched Sudoku toward the wider world. It remains less famous than its siblings, which is part of its charm - learning Country Road today feels like discovering a back road the crowds have not found yet.
Country Road vs Slitherlink, Masyu and Yajilin
All four are single-loop puzzles, but they reward different instincts. Slitherlink draws its loop along cell edges and reasons about how many sides of a square are used. Masyu runs through cell centres like Country Road, but its pearls are purely local clues about turning and going straight. Yajilin adds shaded cells and arrows that count them. Country Road is the regional thinker of the family: its rooms make you reason about territories, doors and crossings rather than individual cells.
If you enjoy the room logic here, Heyawake and LITS apply similar region thinking to shading instead of loops, and Simple Loop is the gentlest cousin - a loop through every cell with no clues at all. Moving between these puzzles trains transferable skills: the corridor counting you learn on this page will quietly improve your Slitherlink endgames too.
- Slitherlink: loop on edges, numeric edge counts, no rooms.
- Masyu: loop through cells, local pearl clues, no rooms.
- Yajilin: loop plus shaded cells counted by arrows.
- Country Road: loop through rooms, one visit each, border rule.
- Heyawake and LITS: the same regional logic applied to shading.
Grid sizes and difficulty levels
The 6x6 boards are a friendly classroom: rooms are small, most carry numbers, and the border rule shows its teeth in miniature. On 8x8 the loop grows longer, rooms get more varied shapes, and you will need entrance-exit counting to keep the road honest. The 10x10 boards are proper countryside - long routes, large quiet rooms and clue numbers spread thinner.
Difficulty changes more than size. Easy boards number almost every room and keep rooms compact, so each step has a nearby justification. Medium drops more numbers and stretches the rooms. Hard boards leave many rooms silent, which pushes the weight onto the two structural rules - one visit per room and no empty pairs across borders. The generator builds every board around a hand-crafted-feeling loop, and any road that satisfies all the rules is accepted as a win.
- 6x6 - learn the rules and the border-rule reflexes.
- 8x8 - balanced boards with real route planning.
- 10x10 - long roads and sparse numbers for experienced solvers.
- Easy, medium and hard change room shapes and clue density.
- Any loop that satisfies every rule counts as a solution.