Logic Masters Deutschland e.V.

flash in the extancy

(Published on 12. June 2026, 03:11 by aqjhs)

I made this puzzle following Scojo's prompt to use lot clues in a chaos construction puzzle.

  • Divide the grid into nine orthogonally connected regions and place the digits 1 to 9 once each in every row, column and region.
  • Region Lots:
    • A digit on a diamond counts the number of cells in the (up to) 3x3 area centered at the cell that are in its own region, including itself.
    • Also, a digit on a diamond indicates how many times that digit appears on diamonds.
  • Cells joined by a white dot have consecutive digits and belong to the same region.
  • Cells joined by a green dot have digits with a difference of at least 5.

Online in Sudokupad

See also:

Solution code: Row 3 with a / for each region border (ex. 123/456/789)

Last changed on on 12. June 2026, 04:40

Solved by mellowrobinson, tuturitu, Chaossudokusplease, tryote, LegoKingo, qoala, palpot, soenlit, jkuo7, snowbaby, damo_89, SPOU1, Zzzzz..., marcmees, emoney1374, avishai, Wahaj, haoju, Jesper, zlotnleo, ... monaters, DragonEgg, garage, misko, ChinStrap, DubiousMobius, ThePedallingPianist, earthpuzzles, Agent, linyuanruo, Black_Doom, zakkai, lsw770770, irq, feverlute, Fenn, toxicfig, BeeBoi, einalem
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Comments

on 14. June 2026, 13:01 by wuc
Has to restart. It was worth it not giving up. Beautiful. 4* to me. Thx.

on 14. June 2026, 02:39 by Crusader175
Fun puzzle!

on 13. June 2026, 16:38 by Franjo
Thank you very much for creating and sharing this wonderful CC-puzzle. Maybe it’s a 3*-puzzle, but for me the Sudoku part towards the end got quite tricky.

on 13. June 2026, 03:04 by Exigus
A bit tricky but very cool setup. Thanks!

Last changed on 12. June 2026, 05:55

on 12. June 2026, 05:54 by Chaossudokusplease
Another great CC puzzle, we've been having lots of good ones lately! Depending on familiarity with CC, it might still be 3.5-4 stars, but I found it quite smooth and interesting throughout the solve.

Last changed on 12. June 2026, 04:40

on 12. June 2026, 04:07 by qoala
For the diamond clues: when counting orthogonally or diagonally adjacent cells in its own region, you specify "up to 9" in a parenthetical. But the way I would normally define "adjacency", there are only 8 such cells.

Are these digits meant to count themselves? Or is the parenthetical unintentionally claiming an excessively high bound.

***

it does include itself, i'll add a clarification

Difficulty:4
Rating:98 %
Solved:108 times
Observed:0 times
ID:000RUI

Variant combination Dissection puzzle

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