Portugues
Tsunagi Line Puzzles
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About the game
Tsunagi means "joining, a link". The board is dotted with pairs of coloured marbles, and your job is to join each pair with a line. The lines may not cross, and when every pair is joined, every cell of the board must be filled. That last rule is what makes it a puzzle rather than a doodle: each level has exactly one answer, which you can reach by reasoning.
There are 2,368 classic levels in sizes from 4 x 4 through 5 x 5, 6 x 6, 7 x 7, 8 x 8, 9 x 9 up to 30 x 30, plus 256 more with portals, where a line goes into one ring and comes out of another. Levels come in blocks of sixteen: solve a whole block to open the next, and a map of the block shows what you have done. Walls, bridges, waypoints, wrap-around edges and hexagonal boards add twists, and Today gives the level of the day, the same for everybody.
Playing it here
Click Play. Choose Classic or Portals, then a board size and a level with the arrows or the level box; "16 of 256 levels open" tells you how far you have unlocked. Draw with a finger or the mouse: press on a marble and drag through the cells you want to cross, or start from the end of a line you drew earlier. Mistakes make the marbles explode, and the settings below let you soften that or switch it off, or allow a Cheat button that shows part of the answer (levels solved that way count as helped). Your solved levels and settings stay in this browser.
Controls
| Input | Action |
|---|---|
| press and drag | draw a line from a marble |
| drag from a line's end | extend it |
| arrows / level box | change level |
| Today | the level of the day |
| Cheat (if allowed) | show part of the answer |
A few things worth knowing
Start in the corners. A marble in a corner has only two ways out, which often decides its line for you.
Think about filling. A line that leaves a single cell cut off is a mistake even if no lines cross.
Use the small boards. 4 x 4 and 5 x 5 levels are a quick way to learn the patterns.
Questions
Is there a time limit? No. Take as long as you like.
What are portals? Rings that come in pairs: a line that goes into one ring comes out of the other.
Credits and licence
The code, the drawings and the puzzle levels are by John Morris, under the MIT licence; nothing else is bundled with the game.