- Normal sudoku rules apply, i.e. each row, column and 3x3 region has to contain the digits from 1 to 9 once each.
- Index Lines: Each hollow turquoise line is an Index Line, i.e. the digit in the Nth cell along such a line (starting from the diamond) indicates the position along the line where the digit N appears. For example, if a diamond cell contains a 3, the third cell along that line must have a 1.
- Region Sum Lines: Box borders divide blue lines into segments with equal sums. (Different lines may have different segment totals.)
Here you can solve the puzzle online:
Solution code: Row 5 from left to right (9 digits in total)
on 27. February 2025, 12:00 by marty_sears
wooo! I got there in the end. I've been beavering away at this since before it was published. I did not find it easy at all and had to do extensive pencil marking to spot the required deductions. I think I probably missed some easier ways to think about things, but in any case it was always satisfying when I made another breakthrough. Couldn't give this anything less than 4 stars for difficulty. Chinstrap and Sujoyku make such a good team - probably one of the most productive double acts since Sandra and Nala :D
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Thank you for your comment, Marty! We are glad that you liked it. Setting with ChinStrap is always a joy. I hope we get to set many more puzzles together.
Kind regards, sujoyku
on 24. February 2025, 17:30 by PuzzlePatzer
Great puzzle!
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Thank you for your comment, PuzzlePatzer! We are glad that you liked it.
Kind regards, sujoyku
on 23. February 2025, 13:54 by Snookerfan
Sublime puzzle as always! Both of you never disappoint. Thank you so much
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You are much welcome, Snookerfan, thank you for your kind words! We are glad you enjoyed the solve.
Kind regards, sujoyku
on 23. February 2025, 04:09 by psninn
nice logic
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Thank you for your comment, psninn! We are glad you liked the puzzle's logic.
Kind regards, sujoyku
on 22. February 2025, 22:46 by Br1312te
The break-in was wonderful! After that it wasn't very challenging, but there were still fun and (for me) novel deductions to be made. I would rate it as a 2-star difficulty. The end was also very satisfying!
Thank you for the great puzzle <3
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You are much welcome, Br1312te, thank you for your comment! We are glad you liked the break-in and enjoyed the solve.
Kind regards, sujoyku
on 22. February 2025, 21:16 by samuel1997
I love the break-in and the end of the puzzle! Brilliant!
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Thank you for your comment, samuel1997! We are glad you liked the start and the finish of the puzzle.
Kind regards, sujoyku
on 22. February 2025, 21:13 by madhupt
A very smooth puzzle. Very very enjoyable.
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Thank you for your comment, madhupt! We are glad you had a smooth solve and found it to be enjoyable.
Kind regards, sujoyku
on 22. February 2025, 20:52 by ChinStrap
A pleasure as always. So grateful to get to set with you.
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Thank you, ChinStrap! Setting with you always is fun. I love our collab sessions and the puzzles that we have set in those.
on 22. February 2025, 20:16 by Chaka
Absolutely fabulous! Got to work hard on that report but it is so worth it!
Thank you for sharing this gem, I hope to see more collab puzzles from you two soon!
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You are much welcome, Chaka, thank you for your comment! We are glad that you liked the puzzle. Considering more collabs, we might come with good news rather soon. :)
Kind regards, sujoyku
on 22. February 2025, 17:07 by Visumation
Absolutely stunning puzzle. Thanks guys.
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You are much welcome, Visumation, thank you for commenting! We are glad that you liked it.
Kind regards, sujoyku
on 22. February 2025, 15:56 by Myxo
Lovely!
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Thank you, Myxo!
on 22. February 2025, 15:38 by mathpesto
Wow! Such a great variety of logic and lovely interactions between the two types of lines. It wasn't easy, but there was always somewhere to look next.
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Thank you for your comment, mathpesto! We had so much fun of figuring out these interactions while setting. So it is great to hear you enjoyed them as well.
Kind regards, sujoyku
Difficulty: | ![]() |
Rating: | 95 % |
Solved: | 84 times |
Observed: | 0 times |
ID: | 000M4J |