Standard Palindrome Sudoku rules apply, except the regions are irregular in shape and are to be deduced. Given black demarcations in the grid between regions must be respected.
One extra rule in this - the sum of the digits on each grey line makes the same total. This total is also to be deduced.
Palindrome: Digits along each grey line read the same from both directions.
As ever, there's a logical solve from start to finish, but no matter how difficult you find this, it won't go down without a fight. Enjoy!
Lösungscode: Row 3, followed by the number of regions that don't cover any 2x2 region of space, in a 10-digit string.
am 2. August 2020, 16:20 Uhr von hamslice
@emmettcito thanks! Glad you enjoyed.
am 2. August 2020, 16:12 Uhr von emmettcito