Underground Topography (Entropy + Cavern Crawl Sudoku)
(Published on 10. January 2022, 23:32 by Nordy)
This puzzle combines Entropy and Cavern Crawl logic. Special thanks to the pioneer of Entropy, Mad-Tyas, for inspiration, testing, and feedback. I highly recommend checking out his puzzles!
Rules:
Normal Sudoku: Place the digits 1 to 9 in every row, column, and 3x3 box.
Entropy: the low digits (1, 2, 3), the middle digits (4, 5, 6), and the high digits (7, 8, 9) form three distinct groups. Every 2x2 region within the cage must contain at least one digit from each group.
Climbing Ropes: adjacent digits along brown lines must have a difference of 3 or less.
You can solve online:
Solution code: Row 1 then Row 9
Comments
on 31. January 2022, 17:34 by Nordy
Added Entropy tag
on 11. January 2022, 23:05 by rhodri
Really good. Never seen the climbing ropes ruleset before and really enjoyed it,
on 11. January 2022, 16:48 by rhodri
Really good. Never seen the climbing ropes ruleset before and really enjoyed it,
on 11. January 2022, 10:29 by Dweezy
I discovered these 2 rules with your puzzle and I really enjoyed it, thanks!
on 11. January 2022, 01:02 by Mad-Tyas
A very nice combination of the two constraints. It's a pleasure to see the family of entropy puzzles grow.
