Rules: Every row, column, box and given diagonal must include three 6’s. There are no 3’s or 9’s in the grid. The remaining numbers (1,2,4,5,7,8) follow normal sudoku rules, appearing once in each row, column and box. Also, every 6 in the grid must connect to at least one other 6 via a knight’s move.
Puzzle is also available on Penpa
Solution code: Enter rows 5 and 6.
on 5. August 2020, 23:06 by karen_birgitta
I really liked this idea! Frustrating always wanting to pencil mark 3's though, ahah
on 5. August 2020, 17:58 by Big Tiger
Oh, now, Geronimo, first attempts are inevitable. I understand the dismay over "flooding" the site, but don't begrudge the first attempts!
on 5. August 2020, 04:11 by Stavros96
Updated tag.