Domino Dino
(Published on 7. November 2021, 01:02 by Raumplaner)
Rules:
- Normal Sudoku rules apply.
- Digits connected by a white dot must be consecutive.
- Digits connected by a black dot must have a ratio of 2:1.
- Domino Pruducts rules apply:
All pairs of orthogonally connected coloured cells form a two-digit domino. Dominoes will overlap each other if more than two coloured cells are connected.
The two-digit number within any domino of coloured cells must be a product of the digits 1-9, while the top/left digit of the domino is the tens-digit of that product. For the product any combination of X*Y where X and Y are from the digits 1-9 is possible.
Not all possibe dominoes are given.
Examples of valid domino product numbers: 18; 21; 25 (5*5 is a valid combination).
Examples of non-valid domino product numbers: 6; 10; 23 (products have to be a two-digit number, can not contain a 0 or have to be a possible product of two of the digits 1-9).
A training puzzle is available here:
Domino Training 4x4 (F-Puzzles)
Credit: Domino Products ruleset by sandini.
Solution code: Row 1 (from left) and column 9 (from top - 18 digits in total):
Comments
on 30. March 2022, 15:04 by XeonRisq
Very nice puzzle and constraint idea. Once you wrap your mind around what the dominoes consist of, and how they chain together, it makes for quite interesting deductions.
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Many thanks. The constraint is really cool once you found some restrictions on possible combinations of digits in dominoes.
on 13. November 2021, 14:07 by uvo_mod
Labels angepasst.
on 9. November 2021, 21:11 by StefanSch
Süßer Dino, schönes Rätsel.
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Vielen Dank für den Kommentar! (Raumplaner)
on 7. November 2021, 12:46 by StefanSch
Im Lösungscode sollte es heißen: "Zeile 1 (von links) gefolgt von Spalte 9 (von oben)."
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Vielen Dank für den Hinweis!
