Cave (Even Rows/Columns) by Murat Can Tonta
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 and Logic
Author/Opus: This is the 49th puzzle from our contributing puzzlemaster Murat Can Tonta.
Rules: Standard Cave rules. Also, an even number of cells in each row and in each column must be inside the cave.
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 = 3:15, Master = 6:30, Expert = 13:00
Solution: PDF
Note: Follow this link for other Cave variations and this link for other classic Caves. If you are new to this puzzle type, here are our easiest Cave Puzzles to get started on.
16:30, ugh. I spent too long at the end.
15:58.
Penpa: [EDIT: Removed as we added our own official link to post]