Did you solve it? Attack the (sliding) block!

Blockhead at the Minecraft convention Photograph: Katherine Anne Rose for the Observer

Earlier today I set you the following sliding-block puzzle: Can you get T to the bottom right-hand corner in five moves. A move takes any single piece to another position by sliding it between the others.

T time Photograph: Alex Bellos

Solution:

1. Move 1 to the lower left hand corner
   
2. Move T to the right
   
3. Move 2 to the upper left corner
   
4. Move 3 to below 2
   
5. Move T to the lower right corner

Thanks again to Dick Hess, author of The Population Explosion and other Mathematical Puzzles.

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I post a puzzle here on a Monday every two weeks. If you are reading this on the Guardian app, click where it says ‘Follow Alex Bellos’ and you’ll get an alert when the next puzzle appears.

I’m the author of three popular maths books including Alex’s Adventures in Numberland and the maths colouring book Snowflake Seashell Star.

You can check me out on Twitter, Facebook, Google+, my personal website or my Guardian maths blog.