Normal Sudoku rules apply. Adjacent digits on a green whisper line have a difference of 5 or more. The grey palindrome line contains a sequence of digits that is the same forwards and backwards. Digits connected by a V sum to 5.
Reading "Das Kapital" by Karl Marx is not absolutely necessary (but highly recommended) to solve the puzzle.
Solution code: row 9
on 16. June 2024, 16:59 by snuuba
Very nice coloring puzzle, deserves higher rating. Lower rating might be caused by the name of the puzzle…
on 9. June 2024, 02:56 by fractalminding
Interesting and challenging Sudoku. A long palindrome. At the end, beautiful things happen with pairs of numbers 6-7, 2-3, 5-8. By the way, greetings from the Sov... Russia
on 8. June 2024, 23:59 by OkiePal
Jokes about communism aren't funny unless everyone gets them. :)
I appreciated the use of the palindrome line to rule out some possibilities. Thank you for the puzzle!