What is a color sorting puzzle?

A color sorting puzzle hands you a beautiful thing that has been quietly broken. The board is a gradient — hues flowing from one corner to another the way a sunset flows into dusk — except most of the tiles have been shuffled out of position. Your job is to put the flow back. No timer chasing you, no enemies, no text to read: just the growing sense that some tiles are wrong and the specific, almost physical pleasure of setting each one right. It is one of the purest puzzle mechanics ever designed, because the win condition lives in your own visual system: you don't check whether you solved it — you see it.

The core loop, in one paragraph

Every board starts from a few anchor colors — typically the four corners — with everything between them interpolated into a smooth two-dimensional gradient. A handful of tiles stay locked as fixed reference points, marked with a small dot; the rest are lifted off the board and scattered. You swap free tiles, two at a time, until every hue sits where the gradient says it must. Early boards make the errors obvious: a warm orange stranded in a field of teal shouts at you. Late boards whisper — two neighboring tiles differing by a step of chroma so small you have to trust your eye at the edge of what it can do.

Why it satisfies so deeply

Three ingredients combine. First, the goal is self-evident: no tutorial can teach you what a smooth gradient looks like better than your own visual cortex, which has been processing gradients — skies, shadows, skin — since birth. Second, the error signal is continuous: a wrong tile doesn't just fail, it visibly disturbs the field around it, and each correct swap produces a little local wave of rightness. Third, the finish is a gestalt event: the last tile clicks in and the entire board suddenly reads as one object instead of many — an actual perceptual shift you can feel happen. Puzzle designers spend careers chasing that moment; color boards get it for free.

What separates a good board from a bad one

The craft is in the gradient itself. A good board is built in a perceptually uniform color space — one where each step the math takes matches a step your eye actually sees. Boards built in naive RGB drift: some regions change too fast, others compress into near-duplicates, and the puzzle becomes guesswork instead of perception. Anchor choice matters just as much: corners too similar make a mushy, low-contrast field; corners too far apart make every tile trivially distinct. And the locked-tile pattern sets the difficulty curve — a frame of locked edges is gentle, a sparse cross of pins is cruel, because long unsupported spans force you to interpolate across distance in your head.

Where TINT fits

TINT builds every board with OKLab interpolation — a modern perceptually uniform color space — so each step across the board is a fair step for your eye, from the first easy sunrise to the final monochrome ramps. Seven chapters escalate the challenge in different directions: vivid neon fields where chroma runs hot, milky pastels where the differences are whisper-quiet, dusk boards where low light flattens contrast, and mono ramps where hue stops helping entirely and only lightness remains. Locked pins shift pattern by chapter, a move counter and star ratings give the replayer something to chase, and a hint button un-strands one tile when you're honestly stuck.