Cave by Thomas Snyder
or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the linex mode where left click+drag draws lines and right click marks X’s)
Theme: Clue Symmetry & Logic (prepared for the 2017 Puzzle Grand Prix)
Author/Opus: This is the 279th puzzle from Thomas Snyder, aka Dr. Sudoku.
Rules: Standard Cave rules.
Answer String: Enter the length in cells of each of the cave segments from left to right for the marked rows, starting at the top. Separate each row’s entry with a comma.
Time Standards (highlight to view): Grandmaster = 6:00, Master = 18:00, Expert = 36:00 (*Estimates from competition scoring, not our usual process)
Solution: PDF
Note: Follow this link for other classic Caves. If you are new to this puzzle type, here are our easiest Cave Puzzles to get started on. More Cave puzzles can be found in The Art of Puzzles and in Roger Barkan’s Colossal Cave Collection.
I have a solution I have triple checked that I don’t see anything wrong with, that the checker says is incorrect. I am wondering if there are 2 ways this one can be solved or if I am just missing something.
As this was part of the Grand Prix competition, the solution is available here (but rotated). Without seeing your answer, I cannot comment on any issue with it but the puzzle has a unique solution.
Thanks, that is the solution I got, now to figure out why how I was inputting it was wrong.
It appears I misunderstood how to submit answers, I was putting in the widths of the unincluded space instead of the included space. Oops. Thanks a lot!
Sorry that the answer key description was the cause of the problem but glad you got this sorted out. We do show answer examples for this and other puzzles on the rules page, but I see how not having it appear on the post can cause problems.
20:13.