What changes on Friday?
| Skill | Normal | Friday |
|---|---|---|
| Count | A stationary field flashes briefly. | The dots move while visible. Estimate the number, not the movement. |
| Track | Predict a disappearing ball’s landing. | The trajectory reflects from the side walls before landing. |
| Angle | Set a direction around one circle. | Keep track of full turns. 450° is different from 90°. |
| Tempo | Continue the pulse after four reference beats. | Tap halfway between the imagined beats after the reference. |
| Split | Mark a proportion inside a line. | The requested fraction can continue beyond an endpoint. |
How do Friday offbeats work?
Keep the interval between taps, but shift the continuation halfway between the imagined reference beats. At 100 BPM a beat lasts 600 ms, so Friday’s first continuation tap belongs 300 ms after the final loud beat, then 900, 1,500 and so on. Do not double your tapping speed.
To repeat this one task, open Custom rounds, keep only Tempo checked, select Friday and choose your set count. For a baseline, compare with Normal Unlimited on the same device. Read timing offset, jitter and scoring to interpret a miss.
Read the full instruction
Friday keeps the five-skill structure, but changes what counts as an answer. For Angle, one full turn plus 90° is 450°. For Split, 3/2 of a line from the left means one and a half line lengths from the left endpoint; from the right, it goes beyond the left endpoint.
Friday uses wider scoring tolerances for these harder tasks. Our own seeds and fixed-reference rhythm implementation are independent practice, not a replay of the original’s Friday puzzle. See both tolerance tables and worked examples →
For the original date-based Friday puzzle, open the original game and choose a Friday in its Archive. To practice only one variation here, make a Friday custom set.