beat yourself!

[Hefemeister]

print up 2 copies of it. cut out the a and b from one. that way you can show someone. then put the cutouts on so they can see. then pull them off and put them together. I have been a god at work today.

 

[Meithan]

Alright, here's the proof for the unbelievers.



Still don't believe it? Then the only solution is to do it yourself.

 

[Chazzer3]

Also, I find put your hands over the checkerboards (on screen), and it is much clearer, a bit like the crop above ^^^

Charlie -