this puzzle cube is for anyone and if you want to test someone's brain then here is the scale:

Less than a minute: AMAZING!!!

One minute: awesome!!

Two minutes: Great!

Three minutes: good.

four minutes: ok.

Five minutes: normal.

more than five: WOW you stuck to it that long with out giving up!(all the test subjects that didn't do it gave up after three minutes.)

doesn't complete without the guide (we've all been there): no problem.

SOLVE GUIDE:

step two:

step three:

step four:

FINAL STEP:

Yes you can sell these without any attribution whatsoever.