If you're not sure about the rule set, try [159] Echo.
It's very easy and works well as a tutorial.
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Rules:Normal sudoku rules apply.
Normal killer rules apply: Cells in cages must sum to the clue given in the top left corner of the cage. Digits cannot repeat in a cage.
The digit in the 1 position of a box indexes the 1's location in that box.
The digit in the 5 position of a box indexes the 5's location in that box.
The digit in the 9 position of a box indexes the 9's location in that box.
The positions within a box being:
1 | 2 | 3 |
4 | 5 | 6 |
7 | 8 | 9 |
If you enjoyed this puzzle, here are a few custom searches for [159] puzzles.
If you are inspired by any of my [159] puzzles, I invite you to set a puzzle featuring the ruleset. You can do so with or without the, "[159]" moniker.
Thanks for playing!Lösungscode: The 4th column followed by the 6th column (no spaces)
am 5. März 2023, 16:22 Uhr von HumanBirdsong
Enjoyable constraint, thanks for setting!
am 20. November 2021, 07:30 Uhr von zegres
Love these 159 variations! This was a fun solve.
am 19. November 2021, 09:27 Uhr von Elliott810
Very nice puzzle(s;))! Thx:)