This is sorta like How to ship the new Slurm 7-pack efficiently by Matt Malone but instead of 7, it's the 9 pack! It's basically a 2 by 4 pack with a piece sticking out, like in the above link. What's the smallest version rectangle that you can make with the described shape, solution with the least packs gets best solution.
I thihk this is the 6x6 solution
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$\begingroup$ @Joe Although it isn't, it looks smaller. $\endgroup$ – warspyking Oct 11 '14 at 16:10
Just 4 packs are needed (sorry if the picture is too tall):
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$\begingroup$ Nice! I'll give the others a few hours to find something smaller before I mark this as accepted (although I bet this is the smallest) $\endgroup$ – warspyking Oct 10 '14 at 20:50
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$\begingroup$ You can do a 6x6 square too, but it also uses 4. $\endgroup$ – Joel Rondeau Oct 10 '14 at 22:46
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$\begingroup$ I'm pretty sure you can reason out why you can't beat 4 $\endgroup$ – Dennis Meng Oct 10 '14 at 23:32
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$\begingroup$ I would actually accept 6x6 first. Someone post it. $\endgroup$ – warspyking Oct 11 '14 at 1:35
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