1. Start the board
Select Start / resume. Free pressing lets you toggle any of the sixteen numbered bubbles. Sound is optional.
Online
Press a bubble, clear the board or try a short memory sequence. Sound is optional.

Loading the interaction…
Select Start / resume. Free pressing lets you toggle any of the sixteen numbered bubbles. Sound is optional.
Choose Memory sequence, then Start sequence. Watch the numbered highlights and repeat their order. A different answer lets you retry the same sequence.
Tab between bubbles and use Enter or Space to press one. Each bubble has its own label and pressed state.
Pause stops an in-progress cue sequence. Start a new sequence when you return. Reset asks for confirmation and clears the board without leaving this page.
Use Restart interaction in the error panel. If it still fails, reload this page and retry. Instructions remain readable.
Continue silently or select Enable sound again. Audio starts only after your action; changing a volume setting does not grant browser audio permission.
Open an image to inspect it at full size. Each caption identifies its source and version.





This silent, original-speed screen recording shows the current interaction controls. Start the round, use the labelled actions, pause, and reset only after confirmation. It does not demonstrate a physical product or play the optional sound effects.