200 Looking Back
(Published on 3. May 2025, 10:01 by sujoyku)
- Normal sudoku rules apply, i.e. each row, column, and 3x3 box has to contain the digits from 1 to 9 once each.
- German Whispers: Adjacent digits on a green line must have a difference of at least 5.
- 200 Lines: Each blue line (top right and bottom) is split by box borders into segments such that the product of its segment sums equals exactly 200. For example, a valid line could read 26-7891 since (2+6)x(7+8+9+1)=8x25=200.
- Kropki: Digits joined by a black dot are in a 1:2 ratio. (Not all dots are given.)
Here you can solve the puzzle online:
Solution code: Row 1 from left to right (9 digits in total)
Comments
on 9. August 2025, 08:30 by jon48
Your 200th puzzle for my 300th solve! And one with German Whispers as well, which are part of my favorites. A well designed grid, which seems a bit perplexing for the first few minutes until you realise the power of the constraints.
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Thank you for your comment, jon48! It is great to hear that our setting/solving milestones met in this puzzle. :) I am glad that you enjoyed it.
Kind regards, sujoyku
on 9. May 2025, 07:55 by Lovejoy
Many many congratulations and sincere thanks for your contribution to this place.
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Thank you for your congratulations, Lovejoy! I hope that I can contribute more in the future.
Kind regards, sujoyku
on 6. May 2025, 05:30 by MSDOS
Great to see this milestone! Thanks for all the wonderful puzzles you've created all the way up to 200! Looking forward to the next 200 and more!
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Thank you for your kind words, MSDOS! It is great to hear that you appreciate my puzzles.
Kind regards, sujoyku
on 5. May 2025, 11:38 by Franjo
Wow! 200 Stück, und alle von hoher bis höchster Qualität (dies Jubiläumsrätsel eingeschlossen), das ist wahrlich bemerkenswert! Ganz herzlichen Glückwunsch dazu - aber bitte weitermachen!
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Vielen Dank für die Glückwünsche, Franjo! Es freut mich, dass Dir meine bisherigen Rätsel gut gefallen haben. Und ich bin zuversichtlich, dass da noch einige hinzukommen werden. :)
Herzliche Grüße, sujoyku
on 4. May 2025, 16:00 by ChinStrap
Congratulations on your 200th published puzzle sujoyku. You deserve every ounce of congratulations for such a solid and prolific catalog!
Enjoyed this one a lot once I finally acknowledged how powerful the lines were.
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Thank you for your comment, ChinStrap! It is great to hear that you appreciate my puzzles.
Kind regards, sujoyku
on 4. May 2025, 11:41 by VitP
completely intractable ...
until you realize that the lower blue line (which you ABSOLUTELY REFUSED to even look at) is almost completely forced.
and so it goes, and then you get stuck again, because you were never in a million years going to even consider the UPPER blue line, except that one is also almost completely forced.
then it's just a matter of diligent sujoyku scanning.
astonishing concept, brilliant execution.
**
Thank you for your comment, VitP! I think I understand where you are pointing. The puzzle is not hard, but it might be surprising how strong some of the clues really are. I am glad that you enjoyed it.
Kind regards, sujoyku
p.s. Was "sujoyku scanning" a typo or written intentionally? In either case, it made me smile. :)
on 4. May 2025, 11:24 by wilsig
Congratulation! Again nice puzzle. At most 2*
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Thank you for your comment, wilsig! I am glad that you liked the puzzle.
Kind regards, sujoyku
on 3. May 2025, 17:00 by farodin64
Can't wait to solve the next 200! Thx for the joy.
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Thank you for your kind comment, farodin64! I am glad that you enjoyed the puzzle.
Kind regards, sujoyku
on 3. May 2025, 14:42 by ViKingPrime
A wonderful way to celebrate a milestone; flows incredibly well. Here's to 200 more!
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Thank you for your comment, ViKingPrime! I am glad you enjoyed the flow of this puzzle.
Kind regards, sujoyku
on 3. May 2025, 14:00 by Calvinball
Congrats on this remarkable milestone my friend! It's one thing to set a lot of puzzles, but to set so many puzzles of consitent quality is truly something worth celebrating.
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Thank you for your kind words, Calvinball! I am glad that you liked the puzzles that I have set so far. :)
Kind regards, sujoyku
on 3. May 2025, 13:40 by Lenivaya_Joppa
Congratulations to your 200. puzzle, dear sujoyku! Like always, it was very pleasant and I enjoyed it very much! Thank you! :)
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You are much welcome, Lenivaya_Joppa, thank you for your comment! I am glad that you enjoy my puzzles, I always enjoy reading your comments as well. :)
Kind regards, sujoyku
on 3. May 2025, 13:27 by Tinnifer
Excellent puzzle as always! I found this to be quite tricky for 2* but it could be that I'm slightly rusty:)
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Thank you for your comment, Tinnifer! I am glad you liked it. Concerning difficulty: Testers had it between 2 and 3 stars. I thought it was closer to 2 stars. So let us see where it settles.
Kind regards, sujoyku
on 3. May 2025, 13:07 by nunc
Thank you for this lovely puzzle, and congrats! You're one of my favourite setters!
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You are much welcome, nunc, thank you for kind words! I am glad you enjoyed the puzzle.
Kind regards, sujoyku
on 3. May 2025, 11:41 by Chaka
Wow, congrats! And please keep going! Looking forward to the 400 line puzzle :)
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Thank you, Chaka! I hope I can keep going so we get to celebrate my 400th in a couple of years. :)
Kind regards, sujoyku
on 3. May 2025, 11:30 by chameleon
Congratulations on that milestone! :)
200 puzzles is a lot...
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Thank you, chameleon!
Kind regards, sujoyku
