Sudoku Variants Series (348) - Line Differences Sudoku
(Published on 24. November 2021, 00:00 by Richard)
Line Differences Sudoku
Inspiration for this type comes from Old Miles.
Solve online in Penpa+ (thanks henrypijames!)
Apply classic sudoku rules.
Each pair of neighbouring digits on a grey line between two circles has the same difference as the two digits in the circles at the ends of the corresponding line. Digits may be repeated on a line.
Solution code: Row 5, followed by column 5.
Comments
on 17. March 2022, 15:38 by Nick Smirnov
F-puzzles:
https://f-puzzles.com/?id=ybwpw2rd
CTC App:
https://tinyurl.com/27h9243v
on 30. November 2021, 17:59 by philb
Very nice, solved it quickly on a second attempt
on 24. November 2021, 11:33 by marcmees
very nice. some beautiful logic, easily overlooked.
on 24. November 2021, 08:20 by Richard
Emphasized the word 'between'.
on 24. November 2021, 08:16 by Richard
@cdwg2000: Henry is not able (yet) to read your hidden comment.
@Henry: one of the test solvers overlooked a trivial opening step too!
on 24. November 2021, 08:15 by Richard
Added link for online solving. Thanks Henry!
on 24. November 2021, 07:30 by henrypijames
Penpa+: https://git.io/JMe8M
Arrrg! I keep breaking it - where's the mistake in my logic?!
Edit: Oh, I get it now!
on 24. November 2021, 06:13 by henrypijames
Just to be clear: "Each pair of digits on a line" does *not* include a circled digits and its neighbor on the line, right?
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Exactly!
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Additional note: Including the digits in the circles in the sequences is never possible when the line+circles are all within the same box like here in boxes 7 and 9. :-)
