We had artist Matt Lyon design the pieces for this one, with a good dose of Spanish city themed people whimsies and unique hexagonal connectors.
Here's a couple cell phone snaps from the alpha-test - you can see the hexagonal connectors are unique, but easily confused, and the colors are actually really hard to sort, so this is a toughie!
The edge is straight, and it does have quite a few whimsies, so this isn't one of our hardest puzzles ever, but we are still rating it really hard to signal this one if for serious puzzlers only!
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