Challenge #391: Which Combinations of Pokémon Types Do Not Exist?

[lwolfie]

This way of thinking, tends to get me.

[Shifty]

Your cruel device, your blood like ice, one look could kill, my pain - your thrill.... ☠️

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[A_Sho]

For my study

[KodyKlein]

This was really fun! I was so pleased that I got the right answer without looking at the solution. 

[cmoussa]

[MelGibson]

wow - this was harder than I thought it would be. Good Challenge

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[robert-headington]

#391

[martinson]

Attempt 1.

[GGGDias]

Nice puzzle like challenge.  I seldom use Append fields to generate cartesian products but this was an interesting use case.

I used base 2 exponentials to create unique pair IDs to exclude pairs in different orders.

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[jfissel]

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