Twin Arrows
A pure logic puzzle about arrows that must find their twins. Put one arrow in every region so that each arrow points straight at a partner pointing back, never in a touching region. Pairs light up with a dashed line, so the lonely arrows stand out.
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Controls
TapDragKeyboard←→↑↓- The grid is split into coloured regions. Every region needs exactly one arrow (up, right, down or left).
- Each arrow must point at another arrow that points straight back at it: the first arrow it meets along its line has to face it. The two arrows of a pair must sit in regions that do not share an edge.
- Drag from a square in a direction to draw an arrow there, or tap a square to cycle its direction. Drawing a new arrow in a region replaces the old one.
- Dark arrows are given and cannot be changed. Correct pairs are joined by a green dashed line; arrows still without a partner glow orange.
- HINT fixes a wrong arrow or reveals a correct one; solve without hints for three stars. Every puzzle has exactly one solution.
About the game
Twin Arrows is a quiet grid logic puzzle in the tradition of pencil puzzles where every rule is simple and the challenge is in how the rules lock together. The board is cut into coloured regions, and each region must hold exactly one arrow. Every arrow is looking for its twin: the first arrow it meets in the direction it points must point straight back. And twins are shy of their neighbours, so a pair can never sit in two regions that touch.
Those three rules are enough to make every puzzle solvable by reasoning alone. A region in a corner with only one useful direction often starts the chain, a long empty row tells you that two arrows have to face along it, and a region boxed in by its neighbours can only pair with something far away. To make the board easy to read, every correct pair is joined by a moving green dashed line as soon as you draw it, and every arrow that is still alone glows orange, so you always see what is left to fix. Drawing a new arrow in a region quietly replaces the old one, which keeps experiments fast. Twenty-four puzzles grow from a 4 by 4 warm-up to 8 by 10 boards with twenty-two regions, and each one was checked by a solver to have a single answer.
Free to play in your browser. No download, no sign-up. Works on phones, tablets and computers. Your progress is saved on this device.