Read left → right, or top → bottom. A → B and B → A are different pairs. The last tile loops to the first.
How to play & keyboard
Select a tile, then choose a pigment. Small dots mark the fixed starting tiles.
Every possible ordered color pair must occur exactly once in each row and, for woven grids, each column. Same-color pairs count too. Edges wrap around.
Ribbon tiles follow their numbers: the end of one visual line continues at the next numbered tile. The final tile closes the loop.
Arrows select tiles. 1–4 paint A–D. Space cycles colors. Backspace erases. Ctrl/⌘ Z undoes.
Hints paint one tile toward a sample solution, sometimes replacing a different valid idea. Any valid complete arrangement wins. Progress saves on this device.