Phantom Killer 9x9
(Published on 10. May 2020, 18:37 by Mondestrunken)
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As in a standard 9x9 sudoku, no block, row or column may contain a duplicate of any number from 1-9. The sum of the digits in a cage corresponds to the number in the corner. Numbers cannot repeat in a cage.
Some cells are blank; they once held numbers that completed the sudoku in a standard way. The number at the end of a row or column in a white cell indicate how many cells in that row or column contain numbers. The number at the end of a row or column in a grey cell indicate the longest chain of consecutive cells containing a number in that row or column. Every edge cell must contain a number greater than zero. E.G.:
Solution code: The fourth, fifth and sixth rows of the sudoku, from left to right, without end cells (use * for blank cells)
Comments
on 25. June 2022, 22:31 by Mondestrunken
Changed one word in EN and DE description
on 11. March 2021, 11:54 by cdwg2000
Very nice!
on 4. June 2020, 17:10 by Mody
Großartig, obwohl ich jeden, aber auch wirklich jeden Denkfehler begangen habe :)
on 14. May 2020, 20:53 by Mondestrunken
edited typos out of descriptions
on 13. May 2020, 18:05 by Mondestrunken
edited the suggested difficulty :)
on 13. May 2020, 18:04 by Mondestrunken
@sfumato: thank you! :)
on 12. May 2020, 20:20 by sfumato
Takes a while to get used to the rules, but luckily I had solved the 6x6 phantom you posted, so it was a little easier for me. The rules work well together. Great construction!
on 12. May 2020, 01:05 by Mondestrunken
edited the English description to remove a typo
on 11. May 2020, 21:02 by Mondestrunken
@marcmees: thank you for your kind words!
on 11. May 2020, 19:02 by marcmees
phantom looks meaner tha he/she is. Solves smoothly .. very nice, enjoyed that.
on 11. May 2020, 02:31 by Mondestrunken
@sf2l: Apologies - I had asked for the wrong rows in the description of the solution code (but it looks like you had the right answer!)
on 11. May 2020, 02:29 by Mondestrunken
edited the solution code description
