Well… THAT was fun!
We started out the weekend with a bang, but ran into time and, well, privacy constraints… but still made a go of it. The overall rules (linked above) said I had to get to at least 12 tiles.
But you have to know, going in, that in my heart, I’m an engineer. So you know too that I would be working out that magical nexus of risk/reward in terms of reducing or extending my wait time. Of course it’s based on letters actually picked, but it certainly becomes an issue as you work through the challenge.