Lesser Doppelganger
(Eingestellt am 19. Januar 2022, 04:44 Uhr von Kafkapharnaum)
If you enjoyed this puzzle, please consider checking out the much more recent Discord Line Squadron pack (4x4, 5x5 and 6x6)
Solve on Penpa
Solve on the CTC app
RULES
– Every row, column, and box contains the digit 0 always, as well as five out of the six digits from 1 to 6 (ie, it's missing one digit that is not 0)
– No two row, no two column, and no two box may be missing the same digit
– For each 0 in the grid, the digits missing in its row, its column, and its box must be three different digits
*** Also, note that a zero always acts as itself (ie, the lowest possible value), regardless of what digits it's replacing in its box, row and column
ARROWS: Digits along an arrow line must sum to the digit in the connected circle. Digits may repeat along an arrow line if allowed by the other rules. The 0's count for nothing (null) in the sums
Here’s a 4x4 example of what a completed grid might look like; the strips and the box outside the actual grid are there to keep track of the digits that have been replaced by a zero in the three different contexts (box, row, column):
Lösungscode: ON THE PENPA PAGE, the digits in the VERTICAL strip outside the grid first, top to bottom, followed by those in the HORIZONTAL strip, from left to right (12 digits total, no space)
Kommentare
am 24. Dezember 2024, 14:50 Uhr von skuntsel
This is easily on the harder spectrum of puzzles with cell modifiers. And most definitely this is a complete mind-twister. You will probably have to restart the puzzle all over again mid-solve just to understand how the restrictions work and how you’re (not) supposed to do sudoku. Many revelations and aha moments along the way with unexpected and intricate logics and ramifications thereof. An absolutely brilliant puzzle and a fantastic implementation! Thank you for this wonderful setting, Kafkapharnaum! By the way, this might be a good candidate for one of the future editions on our respected channel (at the very least fewer sudoku twitch this puzzle)!
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Thank you so much for the interest and support in the ruleset, and for all the kind words! I see you already solved the 'big brother' one though, so I'm going to go and reply over there :D
am 10. Februar 2024, 23:40 Uhr von chrisj50
Great fun - solved it in the CTC app (but no tracker cells) so had to hold the tracker cells in my head for once! Got there despite this - very nice flow :)
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Thank you so much once again for the solve and kind words! Super appreciated to see that steady flow of solves. Plus well done solving it without track cells, and thank you for alerting me about this as it wasn't exactly intended XD (it's an old one, from before Mark's amazing Penpa-Sudokupad converter, so now that I know, I'll be adding new links :-)
am 1. Februar 2024, 20:39 Uhr von The Book Wyrm
Nice little puzzle.
Good introduction to this variant; not too hard, but still some interesting deductions.
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You're on a roll! Thank you so much for supporting the ruleset like that, this really means a lot, and I'm thrilled that you've been enjoying the journey so far :-)
am 2. September 2023, 14:57 Uhr von Yann
Smooth !
am 27. Mai 2023, 08:09 Uhr von marcmees
interesting ruleset. enjoyed that. thanks
am 21. Juni 2022, 08:52 Uhr von PrimeWeasel
Just a little research pompidompidom...
am 22. März 2022, 01:24 Uhr von Piatato
Very nice puzzle! Quite a lot easier than the other doppelganger puzzles, but fun and interesting all the same. :-)
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Thank you so very much for the crazy streak of solves on my puzzles, the kind words, and especially the interest towards these Doppelganger puzzles!
This is extremely appreciated, and I am very eager to see what monstrous mix you'll come up with this ruleset hehe ;-)
am 27. Januar 2022, 06:00 Uhr von jgreenfield
This is a very nice puzzle to introduce people to the doppelganger constraint. It really takes advantage of the logic specific to this rule set, and yet it's much more approachable than the other two puzzles (which are definitely worth solving once you've finished this one).
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Thank you so much for your solve on this one too and for your time and interest in these puzzles! Encouragement like that is everything, and now I'm all the more eager to present a quad 4x4 pack that hopefully will be even more approachable (and fun too I hope) than this one :-)
am 19. Januar 2022, 20:47 Uhr von filuta
I must say the original Doppelganger is still one of my most favourite puzzles, so I was really happy to see the new super hard instalment in the series, and now this pretty cool easier (but certainly not easy) warm up. I really enjoyed the solve, thanks.
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That comment is really heartwarming, I'm very happy to hear you like these puzzles so much, thanks a thousand!
am 19. Januar 2022, 18:56 Uhr von TheCaretaker
Loved the rule set. Difficult to wrap my head around
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Thank you for your solve and comment! Yes, I think I might have underestimated how counterintuitive it can be, hmm... Anyway, glad you like the rule set :D
