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Tile flipping (Posted on 2015-04-08) Difficulty: 3 of 5
A puzzle consists of a number of tiles, T, colored red on one side and blue on the other.

Start with all red side up. The goal is to get them all blue side up in the fewest number of rounds.
A round consists of flipping exactly N of them.

Find a rule for when the puzzle is impossible for given values of (T,N) with N≤T.

Find a rule for the number of rounds it will take when the puzzle is possible.

No Solution Yet Submitted by Jer    
Rating: 4.0000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(2): Thoughts - a counterexample for you | Comment 3 of 12 |
(In reply to re: Thoughts - a counterexample for you by Jer)

Thanks for that help.

The latest guess (it's really no more than that) is now in my original post.

  Posted by broll on 2015-04-09 09:59:00
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