If traveling through a white circle takes that many minutes, and black circles represent backwards jumps in time that save 5 minutes, what's the shortest trip through this map?
From the spanish MENSA site.
(In reply to
re: try this by Tristan)
It took a couple of minutes to figure out what Tristan was doing.
Now that I see it, it's a great way to solve this. Looking at
each diagnol seperately really makes the solution obvious.