Ghostly Numbers
(Published on 13. March 2025, 17:35 by Tprecht)
Rules:
Fill the puzzle grid with numbers from 1 to 9. Each possible number may only occur once per row and column.
All the lowest and highest numbers (1 and 9) and all so-called ‘ghostly numbers’ are not given. Ghostly numbers stand within a row or column between a number with a lower value and a number with a higher value. All numbers already given are not ghostly numbers.
Examples, based on a puzzle grid with numbers from 1 to 9:
• In a sequence ‘5-6-8’, the 6 would be missing as a ghostly number.
• In a sequence ‘9-6-2-1’, the 6 and the 2 would be missing as ghostly numbers would be missing, as would the 9 and the 1 as the highest and lowest numbers respectively.
• In a sequence ‘5-6-2-4’, no number would be missing.
4x4 example puzzle and solution:
Solution code: Row 7
Comments
on 16. March 2025, 17:48 by logik66
Fantastisch
on 15. March 2025, 22:01 by Freegerator
Fun puzzle!
on 15. March 2025, 15:41 by Tprecht
@RockyRoer: Thanks for your input & for setting the puzzle up in sudoku pad :)
on 15. March 2025, 12:27 by RockyRoer
I will admit, I was a little unclear on the rules - I initially though the 6 and 2 in your 9621 example were ghostly because they were between 1 and 9, but later realized that the 'between' rule was only for cells directly next to them. So the 6 is ghostly because it's between 9 and 2. If the numbers were 9261, then neither the 2 nor the 6 would be ghostly. But looking at your example 4x4 puzzle clarified that.
on 15. March 2025, 12:00 by RockyRoer
Fun new rule - I hope that many will try it. Here's a link to the puzzle in Sven's sudoku pad: https://sudokupad.app/yltjgwul0t
I made the puzzle using Sirxemics Sudokumaker - it's pretty intuitive and powerful to make sudoku and sudoku-like puzzles if you want to give it a try: www.sudokumaker.app
on 14. March 2025, 12:04 by Luigi
Gefällt mir wirklich gut!
