Question 1

Are the scrambles competition-legal?

Accepted Answer

The scrambles use random-move generation with the standard WCA move set (U D L R F B with 2 and ' modifiers) and avoid two consecutive moves on the same face. For official competitions WCA uses random-state solvers, but random-move scrambles of 20+ moves are functionally equivalent for practice.

Question 2

How does the timer work?

Accepted Answer

Click or tap the timer (or press Space) to start. Tap again to stop. The timer uses a high-resolution performance counter and stores your solves locally so you can see your best time, last time, and Ao5 / Ao12 averages.

Question 3

What is Ao5 and Ao12?

Accepted Answer

Ao5 (average of 5) drops your fastest and slowest solve of the last 5 and averages the middle three. Ao12 does the same over 12 solves. Both are the standard speedcubing metrics because they ignore lucky and bad solves.

Question 4

Is my solve history saved?

Accepted Answer

Yes — solves are saved in your browser's local storage so they persist between visits. Nothing is uploaded to any server, and you can clear the history any time.