Diagonal Indexing #1
(Published on 5. August 2023, 02:41 by EPH)
I haven’t seen a diagonal index sudoku before, so I thought I would try to make one.
Standard sudoku rules apply.
Green lines are German whispers lines.
The marked diagonal must have no repeat digits. In addition, the diagonal is an index line: a digit on the line gives the poisition in the row of the column number, and the position in the column of the row number. E.g. if R1C9 were 4, then R4C9=1 and R1C4=9.
Solution code: Enter column 5.
Comments
on 17. August 2023, 05:24 by marcmees
nice indexing pattern. thanks
on 8. August 2023, 21:42 by EPH
@giladooshlon That's one of the best things about indexing: you can have a perfectly visually symmetric grid that has a unique solution.
on 8. August 2023, 10:02 by giladooshlon
The indexing really messed with my head on this one, but it was great logic throughout and a lot of fun!
It's just so satisfying to have a completely symmetric grid evolve into a unique solution which has the same kind of symmetry.
on 6. August 2023, 23:11 by EPH
@Fisherman Lol. Thanks for the support, but people should be aware that Phisto is very hard, while Orchard Pair is very easy. Most of my puzzles fall in the middle.
on 6. August 2023, 19:58 by Fisherman
Another beautiful publication by EPH. No surprise. Please try his "Looking for Phisto", featured on CTC, and "Orchard Pair" if you missed those.
on 6. August 2023, 10:20 by wullemuus
Nice concept and not too tricky by using letters and colours in decoding. Thanks!
on 5. August 2023, 21:13 by EPH
Clarified the indexing rules.
on 5. August 2023, 18:42 by EPH
The example is correct; I may have worded wrong.
on 5. August 2023, 14:02 by pms_headache
Confused. Is the index giving the row in which the column number appears (as in the instructions) or the row in which the row number appears (as in the example R4C9=1, or should it be 9)
