An entry in Fortnightly Topic Challenge #33: Surface Geometry Mazes



  • 5
    $\begingroup$ Whoever VTC 'unclear what you are asking' - its perfectly clear. The instructions are given, you just have to read them $\endgroup$ Commented Jul 4, 2017 at 17:02
  • 6
    $\begingroup$ To be fair, I don't really get it either, but a comment would have been sufficient. I personally would appreciate a clearly explained standalone step-by-step mini example. $\endgroup$ Commented Jul 4, 2017 at 18:27
  • 7
    $\begingroup$ @BeastlyGerbil, if you think it's perfectly clear then please supplement the instructions with an unambiguous textual explanation. $\endgroup$ Commented Jul 4, 2017 at 20:53
  • 5
    $\begingroup$ @PeterTaylor instructionless/instruction-lite puzzles are actually quite popular. In the case of this puzzle, I don't think anything would be lost with clearer instructions, but I think it's clear enough as is. $\endgroup$ Commented Jul 4, 2017 at 23:39
  • 2
    $\begingroup$ Looks like a great puzzle, but I've gotta agree with others above that the rules are pretty difficult to parse (though not to the point of "unclear what you are asking" IMO). Am I right in my interpretation, that you must turn on every circle (thus implying that circles on edges must be on changes in slope)? And further, that said turn must be exactly one turn (so you can't have a double slope change on a circle?) Also, it's not explicit, but I assume a 90° turn through a quadrilateral is "1 turn" and that you can't "cross over" a wormhole, and must teleport through it? $\endgroup$
    – Alconja
    Commented Jul 5, 2017 at 3:20

1 Answer 1


That was a fun maze!


solved maze
I have colored the upward slopes red and the downward slopes green.

It would take too long to go through every step but it was possible to complete it without guessing. Here are some steps along the way:


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