Unlucky Killers
(Eingestellt am 9. Mai 2023, 03:02 Uhr von bodemeister)
Rules:
- Normal Sudoku Rules Apply.
- Dashed rectangles are killer cages. Digits in a killer cage must sum to the number in the top left corner of the cage (if given).
- Killer Indexing: Digits in killer cages also reference the position of a digit in it's corresponding row and column. If cell RxCy is in a killer cage and contains digit k, then cell RxCk contains digit y and cell RkCy contains digit x.
|
Example: The image on the right is an example of the Killer Indexing rule, showing the digits in blue that must be placed as a result of the given killer cage digits. Digit 5 in R4C2 says that 5 is the position of digit 2 in row 4 and that 5 is the position of digit 4 in column 2. |
|
Below is the main puzzle. It is also available at F-Puzzles and CTC-App
Lösungscode: Row 1
Kommentare
am 11. Mai 2024, 13:17 Uhr von The Book Wyrm
Fun puzzle!
More neat interactions with the indexing - some pretty interesting stuff comes from having the cells be both row and column indexing.
Not too difficult either.
-------------
Yeah it's not hard. I think the only reason it is rated 4-star is solvers who have not experienced the indexing rule before.
am 13. Mai 2023, 03:04 Uhr von billybobo445
Fun solve!
--------------------------
Happy to hear. Thanks!
am 12. Mai 2023, 22:45 Uhr von VitP
scary hard until you can wrap your head around the indexing.
--------------------------
Yeah the puzzle does require a specific approach. Parity is important. Low=1-3, Middle=4-6, and High=7-9. Two adjacent killer cells in the same 3x3 box must have different parity, otherwise the common digit they index would appear twice in a 3x3 box, resulting in a contradiction.
am 9. Mai 2023, 12:15 Uhr von MonsieurTRISTE
A dance between rows and columns.
--------------------------
Yes lots of row/column interactions. Thank you for solving my puzzle!
am 9. Mai 2023, 08:48 Uhr von tryote
Very nice!!!
--------------------------
Thanks! Glad you enjoyed the puzzle.
