Negative And A Half Puzzle #1
(Published on 10. June 2020, 02:52 by RockyRoer)
The Rules:
- Standard sudoku rules apply.
- In addition, in every row, column and block there are three special cells. Two cells have 'halves' added to them: e.g. 7 1/2. The other special cell has been made negative.
- Standard killer sudoku rules apply. The cages contain the sum of the cells inside, including their special effects. (e.g. 1 1/2 + 7 1/2 = 9 or 5 + 4 + -7 = 2).
- If a cage contains special cells, it either be a single negative sign, or two halves. The cages will not contain a number and its opposite, nor it's 'and a half'.
For example:
- A cage can not contain 3, 3 1/2, and 5.
- A cage can not contain 3, -3 and 8
- A cage can not contain -4, 2 1/2 and 8 1/2.
- The numbers on the outside of the grid are the sum of the cells "sandwiched" in between but not including the halves. For example:
- The row 1 2 3H 4 5 6H 7 -8 9 could have a 9 outside.
- The row 1 2 3H 4 -5 6 7H 8 9 could have a 5 outside.
The Puzzle:
Solution code: Enter the third row, using - for negative and H for halves, with no spaces: e.g. 34H2-1987H56
Comments
on 29. March 2023, 21:54 by StephenR
Nice puzzle, thanks. Perhaps the first instance of what is now known as negators and similar variants?
on 16. July 2021, 14:54 by Mody
Lustige Idee und toll umgesetzt. Es hat viel Spaß gemacht.
Fun idea and great implementation. It was a lot of fun.
on 26. January 2021, 14:37 by SirWoezel
Nice. The last few weeks I've occasionally been looking for puzzles with less than 15 solves just to try them out. This was one of them. It's not always as good as this one though...
*** I do the same... advanced search for 13, or 14, 15, solves and no rating... :-) Thanks!
on 26. January 2021, 12:17 by RockyRoer
Wow... my first puzzle finally got rated! Added F-puzzles link and reformatted.
on 10. June 2020, 14:49 by RockyRoer
added link to printer friendly version
on 10. June 2020, 02:55 by RockyRoer
Changed a few typos
