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: Mirror Cave
Author/Opus: This is the 386th puzzle from Thomas Snyder, aka Dr. Sudoku.
Rules: Standard Cave rules.
Difficulty: 3 stars
Time Standards (highlight to view): Grandmaster = 2:45, Master = 4:15, Expert = 8:30
Solution: PDF; a solution video is also available here.
Note: Follow this link for classic Caves and this link for Cave variations. 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 Roger Barkan’s Colossal Cave Collection, in The Art of Puzzles, and in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli.