Cave (Product) 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: Powers of Two
Author/Opus: This is the 411th puzzle from Thomas Snyder, aka Dr. Sudoku.
Rules: Variation of Cave rules. Each clue represents the product of the number of row cells visible (including the cell itself) with the number of column cells visible (including the cell itself).
Difficulty: 3 stars
Time Standards (highlight to view): Grandmaster = 4:00, Master = 5:45, Expert = 11:30
Solution: PDF and solving video.
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.
İ Sony understand how solve
ı dont understand for how solve
I made 3 attempts, every time finished with another contradiction. Maybe I need to sleep and try again tomorrow
Tricky one! Harder than 3 stars, I think.
quite tricky at the start, but it is not difficult after the break-in.
I made a forcing guess near the beginning and the whole puzzle fell into place very quickly. Had to go back over it knowing the right answer to find a logical path. Tricky one!
Fourth attempt after the night was finally successful, now I noticed things that I hadn’t seen before
Can you explain the logic of solvers?
Great puzzle, very clever!