Mini Diagonals
This type was invented by Silke Berendes for the German Sudoku Championship 2009.
Solve online in Penpa+ (thx Nick Smirnov!)
Place the digits from 1 tot 9 in every row, column and 3x3-block. There are mini diagonals of three cells each drawn in the grid. The sum of the digits on each diagonal is given on the top of the diagonal.
Solution code: Row 3, followed by row 4.
on 14. July 2022, 10:37 by Richard
Added link and tag for online solving. Thx Nick!
on 18. December 2020, 10:54 by Nick Smirnov
Penpa:
https://git.io/JL4aI
on 1. August 2016, 14:43 by ohm0123
Thanks Richard.
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