Uploaded May 2023 | Updated September 2026, 1 day ago

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in summary:

there are 6 buttons. 5 will start as red, 1 will start as green. never touch that first green. you want all 6 buttons to be green

3 of the red buttons will function as expected: press them, and they will turn the opposite colour (red becomes green, green becomes red). these buttons affect themselves and only themselves

the last 2 red buttons function in relation to one another. let's call them button A and button B. button A is the special one that influences button B. at first, you don't know which is A and which is B - you'll need to find out

if B is red, pressing A will turn itself and B green. this is what you want
if B is already green, pressing A will turn itself green, but B red. this is NOT what you want, but if this happens to you, you now know which button is A and which is B, and you are guaranteed success in your next attempt