Killer in a cold cave
(Published on 21. May 2023, 23:35 by Lutterot)
In my previous puzzle, Serpent with a lisp, I played around with hidden thermometers in a snake puzzle. I liked the idea enough to apply it again: this time in a cave puzzle and using some different logic.
Rules
Standard sudoku rules apply.
Cave: Shade some cells in the grid. These shaded cells are wall cells; the unshaded cells are cave cells. The cave cells form a single connected cave. Single and connected wall cells form walls that are connected to the edge of the grid. No 2x2 area is entirely wall or cave.
Dead ends: The white circles are all the dead ends of the cave: they are cave cells with only one adjacent cave cell. Digits in these circles indicate how many cave cells (including itself) can be seen from that cell. Walls obstruct vision.
Thermometers: In every straight line of connected cave cells the digits are in increasing order.
Killer cages: Digits do not repeat within cages. The cave cells in each cage sum to the given total.
Connection and adjacency in the above description is strictly orthogonal.
Link: Play on CtC
Rules
Standard sudoku rules apply.
Cave: Shade some cells in the grid. These shaded cells are wall cells; the unshaded cells are cave cells. The cave cells form a single connected cave. Single and connected wall cells form walls that are connected to the edge of the grid. No 2x2 area is entirely wall or cave.
Dead ends: The white circles are all the dead ends of the cave: they are cave cells with only one adjacent cave cell. Digits in these circles indicate how many cave cells (including itself) can be seen from that cell. Walls obstruct vision.
Thermometers: In every straight line of connected cave cells the digits are in increasing order.
Killer cages: Digits do not repeat within cages. The cave cells in each cage sum to the given total.
Connection and adjacency in the above description is strictly orthogonal.
Link: Play on CtC
Solution code: Row 1 from left to right as nine characters
Last changed on on 22. May 2023, 17:32
Solved by Gryllulus, sanabas, Tamuha, madcyantist, jkuo7, Gab, codewizard, ascension
Comments
Last changed on 14. June 2023, 17:16
on 14. June 2023, 17:15 by codewizard
That was brutal (for me) :-) I really liked the rules, and in the end it came together really nicely. But the way there.... It helped once you had internalized the negative constraint. I noticed it but didn't pay enough attention to it at the start.
on 23. May 2023, 13:35 by Tamuha
The puzzle is not easy, but the really nice ruleset makes for a pleasant solve.
