Here are two tips for beginners in a tiny font. (Copy them into a text editor and enlarge the font size if you want to read.)
1. Prime = odd!
2. Sum R5C4+R5C6 = 3; Sum R4C5+R6C5 = 13; R5C5 = 9
Solve online in Penpa+ (thx Nick Smirnov!)
Solution code: Row 2, followed by column 2.
on 27. August 2024, 12:45 by mezkur7
Sudokupad: https://sudokupad.app/71xyn17n0p
on 20. November 2022, 07:00 by Richard
Added tag and link for online solving.
Thx Nick!
on 19. November 2022, 14:54 by Nick Smirnov
Penpa:
https://tinyurl.com/2zfh4tf4
on 10. February 2012, 16:16 by Statistica
Tolle Idee und wunderbar logisch lösbar. Bin gespannt auf Nr. 2!!
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