How to Start

  The aim is to spin all the tumblers to horizontal so that the key can slide out. Click on the tumbler you want to turn and it will slide to the turn position (if it can) and turn (if it can). You can either choose a random setup position or set up a position using Edit and setting tumblers up or across as you like.

Random setup does simply what it says.

Edit / Play allows you to set up any position by clicking the tumblers until they have the desired orientation. Click or tap on the button again to resume normal play.

Solve solves the puzzle continuously performing moves. Tap the button again to stop the animation.

Reset returns the puzzle to the fully locked start position.

It may help if you have a look at  Strategy.


  The right-hand tumbler can always turn one way.  Looking along the line to the left, it’s the first upright tumbler that stops the slide to the right. The tumbler to the left of the upright one will line up at the turn area and will always be able to turn.

  • Click on the the far right tumbler so it is turns sideways.
  • Click on the tumbler to the left of the first upright tumber from the right hand end.
  • Click on the the far right tumbler so it turns to face the opposite way from its current position.
  • Repeat last two steps, clicking left and right tumblers, sliding forward and backward until the puzzle is solved. Simples!

    This puzzle is recommended by that            
               erudite meerkat, Aleksandr Orlov.
    meerkat photo

    Back to the puzzle.

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