Logic Masters Deutschland e.V.

Primal Chaos Sudoku

(Published on 18. September 2022, 11:20 by floppseynova)

Rules:

-The digits 1-9 appear once each within the center digits of the boxes.

-In boxes with a composite number (1,4,6,8,9) in the center (Hereafter CN boxes), normal sudoku rules apply.

-In boxes with a prime number (2,3,5,7) in the center (Hereafter PN boxes), normal sudoku rules do not apply, but must not prevent CN boxes from working properly.

-White dots in a CN box signify a difference of 1. In a PN box, they signify a difference of either 2,3,5, or 7.

-Black dots always signify a ratio of 2:1 between digits.

-Gray dots are where both a black and white dot apply.

-All dots within boxes are given, none of the dots between boxes are given.

-Digits that lie on an arrow sum to the digit in the circle.

-All prime digits are orthogonally connected.

-PN boxes have a prime number of prime digits not equal to the center value (ie the center digit is 2 therefore there are 3,5, or 7 prime digits in the box).

-The sum of digits contained within a PN box is a prime.

-The number of boxes containing all the prime digits is prime.

Play on Penpa: https://tinyurl.com/yufghn4z

Play on SudokuPad: https://tinypuz.com/yl2fyr8h

Example grid:

Solution code: row 5 and row 6 digits from left to right an equal sign and the sum of all the digits in the puzzle For Example: if row 5 is 1,2,3,4,5,6,7,8,9 and row 6 is 2,3,4,5,6,7,8,9,1 and the sum of all the digits in the puzzle is 375, the solution code would be: 123456789234567891=375

Last changed on on 14. September 2023, 11:45

Solved by ugly2333
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Comments

on 14. September 2023, 11:45 by floppseynova
updated ruleset in linked play methods

on 14. September 2023, 11:24 by floppseynova
added sudokupad option

on 30. September 2022, 08:29 by floppseynova
rules clarity

on 30. September 2022, 08:28 by floppseynova
rules clarity

on 30. September 2022, 08:28 by floppseynova
fixed error in example

on 30. September 2022, 07:00 by floppseynova
Clarity in ruleset

on 19. September 2022, 23:00 by floppseynova
"new puzzle" tag

on 19. September 2022, 02:32 by floppseynova
fixed error in example

on 19. September 2022, 02:30 by floppseynova
further updated example

on 19. September 2022, 01:45 by floppseynova
improved the example

on 18. September 2022, 19:56 by floppseynova
fixed error in example

on 18. September 2022, 19:54 by floppseynova
Added an example grid

on 18. September 2022, 11:54 by lsw770770
Can you give an example to explain it?

on 18. September 2022, 11:25 by floppseynova
link to play

Difficulty:4
Rating:N/A
Solved:1 times
Observed:9 times
ID:000BA4

Puzzle variant Variant combination Math knowledge

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Solution code:

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