The world's best AI cannot solve this simple question! Can you figure it out? Four glasses are in a row face up. What's the minimum number of moves to make them down, if you have to invert 3 glasses at a time? What if you have n glasses and you have to invert n - 1 glasses at a time? Special thanks this month to: Mike Robertson, Daniel Lewis, Kyle, Lee Redden. Thanks to all supporters on Patreon! www.patreon.com/mindyourdecisions

0:00 problems
1:23 solution
6:08 general 1
10:49 general 2

UKMT
twitter.com/UKMathsTrust/status/169895428532771236…
Puzzling StackExchange solution by Caleb Stanford
puzzling.stackexchange.com/questions/47105/6-water…

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