- Posts: 172
- Joined: Mon 09 Aug, 2010 1:53 pm
Potential issue: again the lack of regions. Authors are free to chose which part of the grid has a third constraint. This constraint being only to be "deficit" regions (of any size).
Source: 2015 WSC, Sofia
- Posts: 2
- Joined: Sat 06 Nov, 2010 11:43 am
It's a dangerous variant. I would say that you can make this variant with only one region with 2 cells. I wouldn't say it's a sudoku.