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A target wants an exact set of colours, so too much light fails it. A red target hit by red and blue is not a red target — it is a magenta one, and it stays dark. Look for a stray beam arriving that you did not intend.
You get exactly the number of mirrors the solution needs, and no more. The count is information: it tells you roughly what shape the answer is. If you are at the limit, undo or move one you have already placed — flipping a mirror you already own is free.
Two things are scored. Mirrors: any you placed that light never touches. Taps: any that did not survive into your final board — placing something and removing it, or cycling past the orientation you wanted. The weaker of the two decides the rating, so a tidy board cannot rescue a lot of flailing, and vice versa.
Consecutive days solved at three stars. It breaks two ways: missing a day, and solving a day imperfectly. Your ordinary streak survives an imperfect solve — that one only asks that you showed up.
Yes, as often as you like. Your first result is the one that is recorded and shared — replays are for enjoying the board, not for improving the score.
Yes. Turn on Colourblind assist in Settings and every emitter and target is labelled with its colour's letters, so nothing depends on telling hues apart.
Reduce glow in Settings gives thinner, flatter beams — easier on the eyes and on battery. Sound and haptics each have their own switch, and the game honours Reduce Motion if you have it on system-wide.
Settings → Remind me, then pick a time. Trichrome sends one notification a day, and none on a day you have already played.
Progress is stored on your device and is not synced, so it does not follow you to a new phone. If you restored from an encrypted backup it should come with you; otherwise it starts fresh. Sync is something we would like to add.
Please write: trichromegame@gmail.com. Telling us the puzzle number from the top of the board helps enormously.