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comment by thundara
thundara  ·  1757 days ago  ·  link  ·    ·  parent  ·  post: Hubski quiz: a math puzzle

Got it. Instead of going in a curve / spiral, you go out a ways, circle away to maximal distance from the monster, then go out again. There's a distance where you can still circle the lake faster than the monster. That head start lets you win.

flagamuffin  ·  1756 days ago  ·  link  ·  

Turns out I told it correctly:

wasoxygen found it on StackExchange.

thundara  ·  1756 days ago  ·  link  ·  

Psh, symbols. I spew the ideas and leave it to others to work out if they're actually sane.

flagamuffin  ·  1757 days ago  ·  link  ·  

Wow, okay, so I didn't even tell the question right but you still got the answer. The gist of it, I think, is that you can row 1 radius and the monster can run 4r and so you need to "shorten the circle" by rowing to r/4, whereupon you can move around the circle faster than the monster can run. I believe. That was roughly my solution (after I sugged 8bit's everlasting spiral) and my friend said I got it, but I may be mixing up the details. I'll try to get back to you with the actual question.