Signal
A hidden rule transforms a row of glyphs. Probe the machine, then predict what it does next.
Generated in your browser — nothing is sent anywhere
00:00 · today’s puzzle
How to play
The machine applies a hidden rule to a row of glyphs. Run a limited number of probes — feed it a row and watch the output — then predict its output for three new rows. A probe is a single experiment; par is the number of transformations in the rule. You can always show the rule, but that run does not count.
Feed the machine a row to see what it does.
0/3 predictions set
About today’s signal
Every day’s signal is generated from the date, so everyone who opens this page on the same day sees the same one. Nothing is fetched from a server and no account is involved. Every puzzle is verified to be fair before it ships, and the arrows above walk back through previous days at any level.