How to start
The aim is to restore the red and blue discs. Click or tap on the coloured dot to
turn the disc beside it by
one-sixth of a circle - the left hand disc turns left, the right hand to the right. This is a modern puzzle
invented by Douglas A. Engel in 1983.
Mix produces a random puzzle to solve
Reset sets the puzzle to back to the start position
Hint shows the next step to solving the puzzle
Solve solves the puzzle, playing through the whole solution automatically; press it again to pause the solving.
On to the more colourful and intriguing version called the
Turnstile Puzzle