```Ruby Quiz schrieb:

>The three rules of Ruby Quiz:
>
>1.  Please do not post any solutions or spoiler discussion for this quiz until
>48 hours have passed from the time on this message.
>
>2.  Support Ruby Quiz by submitting ideas as often as you can:
>
>http://www.rubyquiz.com/
>
>3.  Enjoy!
>
>-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>
>by Christer Nilsson
>
>You have a starting point and a target, say 2 and 9.
>
>You have a set of three operations:
>
>	double
>	halve    (Odd numbers cannot be halved.)
>
>Problem: Move from the starting point to the target, minimizing the number of
>operations.
>
>	Examples:
>
>	solve(2,9)  # => [2,4,8,16,18,9]
>	solve(9,2)  # => [9,18,20,10,12,6,8,4,2]
>
>
>
>
This was really a nice riddle.
I learned much about understanding and implementing a BFS algo.
Thank you for that.

But I waited for the new riddle to appear :\
I guess I have to wait another few days.
But please don't say 'Tomorrow\'s quiz is about..' and similar.
Well I was bored today :>

I get an 403, when I try to touch /quiz61.html from rubyquiz.com
Maybe it's is correct that I get that response, maybe not.

Don't let us wait too long for that dice riddle :>

-
With kind regards from Duesseldorf, Germany
Robert "Mr. Overheadman" Retzbach

```