Chaos Construction Containing Circles Counting Correct Cave Clues
(Published on 9. June 2026, 00:00 by Scojo)
Rules:
- 0-4 Chaos Construction Sudoku: Divide the grid into 5 five-cell orthogonally connected regions. Place the digits 0-4 once each in every row, column, and region.
- Consider every cell of the grid to be a cave clue (which may be correct or incorrect). A digit in a correct cave clue counts the number of cells in its region seen orthogonally from that cell (including itself), where region borders and the edge of the grid block vision. A digit in a circle counts the number of correct cave clues that exist in its region.
Solve in SudokuPad

Solution code: Row 2
Last changed on -
Solved by mellowrobinson, ThePedallingPianist, tryote, dogfarts, Steven R, sehringdipity, MaizeGator, Zzzzz..., marcmees, Dcs, kskit, damo_89, SKORP17, HeyItsErin, yttrio, 3ColorTheorem, Myxo, madhupt, ... Fenn, QuiltyAsCharged, 379475229, Jesper, Lyouke, karlmortenlunna, Trinn, dorverbin, kasperd, DragonEgg, kangaroo, agedsaltwater, mocloud, PrincessSophia, elmers, haoju, Frank Puzzles, millie
Comments
on 11. July 2026, 20:52 by kasperd
Squeezing so much challenge into a 5x5 is quite brilliant. But possibly the title is even more brilliant.
on 9. June 2026, 22:09 by madhupt
Lovely flow of logic! Not very obvious, though. Thanks for sharing.
on 9. June 2026, 21:53 by Myxo
Lovely!
on 9. June 2026, 12:08 by Dcs
Love the unique logic here and how it resolves at the end!
on 9. June 2026, 00:55 by ThePedallingPianist
Love the ruleset! Once I actually trusted the puzzle enough to solve it, rather than wasting time investigating all possible cave clues in all twelve 5-cell regions, it was smooth sailing, well signposted and resolved beautifully!