Galaxies Symmetry Puzzle
Galaxies Symmetry Puzzle is a grid of squares scattered with dots, and your task is to slice it into pieces. Every piece gets exactly one dot, and the dot must be its center: spin the piece 180 degrees around it and the outline lands right back on itself.
The dots can sit in the middle of a square, on a line, or where lines cross, which is what makes each board different. It loads straight into a browser tab, so there is nothing to install on a laptop or phone.
How to play Galaxies Symmetry Puzzle
You build the answer by placing walls on the lines between squares. Click a line to add a wall and click again to remove it. When a fully walled area contains just one dot, sits evenly around that dot and has no loose walls inside, the game shades it to confirm it is valid.
The board is solved once every square belongs to a valid piece and the only walls left are the borders between pieces. Reminder arrows help with bookkeeping. Drag one out of a dot and drop it on a square you know belongs to that dot.
The Type menu offers 7x7, 10x10 and 15x15 boards, each at Normal or Unreasonable. Custom lets you pick any size.
Controls
| Action | Keyboard | Mouse | Touch |
|---|---|---|---|
| Add or remove a wall | Arrow keys to a line, then Enter | Left-click the line | Tap the line |
| Pull a reminder arrow from a dot | Enter on a dot, then Enter again where it goes | Right-drag from the dot | Hold the dot, then drag |
| Move or remove an arrow | — | Right-drag it, or drag it off the board | Hold it, then drag |
| New game, undo, redo | N, U, R | Menu bar buttons | Menu bar buttons |
Tips
- Think in pairs. Any square you give to a dot has a twin on the exact opposite side of that dot, and the twin must join the same piece.
- If two dots sit at the centers of side-by-side squares, a wall always runs between those two squares.
- Hunt for squares that only one dot could claim while keeping symmetry. Those are certain, so wall them in first.
- A closed area that stays unshaded has a problem. Check for a stray wall inside it or a side that does not mirror the other.
- Leave the Unreasonable setting for later. Those boards may force you to try a guess and back out.
If you like Galaxies Symmetry Puzzle, try these
Five-Square Tiling PuzzleIf carving a grid into exact regions is your thing, try packing twelve lettered shapes so every cell is covered once.
TangramShape logic without a grid: you turn and flip seven geometric pieces until they fill a target silhouette.
Questions
What counts as symmetric in Galaxies Symmetry Puzzle?
A piece is symmetric when a half turn around its dot maps it onto itself exactly. Mirror symmetry left to right does not count; only the 180 degree rotation matters.
What are the arrows for?
They are notes for you and do not affect the solution. Each arrow points back at its dot, so you can mark which piece a square belongs to before you draw its walls.
Is there a way to see the answer?
Yes. Pick Solve from the menu bar and every wall gets drawn for you. Undo and Restart are there too if you would rather keep working on your own.
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