German Summing Doppelganger
(Published on 3. March 2024, 18:40 by feethy)
Solve on Sudokupad (with track cells)
GERMAN WHISPER LINES
• Along green lines, any pair of adjacent digits must have a difference of at least 5.
X-SUMS
• Clues outside the grid show the sum of the first X digits from that direction, where X is the first of those digits.
• Additionally the first X digits act like a straight german whisper line of length X (i.e. if an outside clue is 14 then 392 is valid but not 374 nor 329)
DOPPELGANGER
• Every row, column, and box contains the digit 0 always, as well as eight out of the nine digits from 1 to 9 (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 •
• Cells outside the grid are used to put the digit missing in the row/column/box (i.e. if the digit 2 was missing from box 1, there would be a 2 in the first cell of the box outside the grid)
Solution code: Row 1 and column 6 (from left to right and top to bottom) (Do not include digit in track cells)
Comments
on 8. August 2024, 16:49 by The Book Wyrm
Great puzzle!
Pretty interesting and not that hard break-in, figuring out how the x-sums working with the whispers. Still quite a lot of work after that, but the clues in the tracking cells and doppelganger ruleset led to some interesting deductions.
on 28. July 2024, 16:52 by chrisj50
Despite its intimidating appearance, the break-in wasn’t too tough and the X-sums fell fairly swiftly. Still took a bit of hard work after that, but a very enjoyable and smooth solve. The GW lines in the tracker cells were a nice touch!
on 4. March 2024, 14:24 by wullemuus
Congrats to your first Doppelganger puzzle! The combination of X-Sums and German whisper made the break-in easy. Also the doppelganger part leads to a smooth solving part. Overall very enjoyable. Looking forward to your next one!
on 3. March 2024, 20:40 by Kafkapharnaum
Thanks so much for adding this one to the LMD catalogue! It’s been quite pleasing lately to see it take shape like that, with more puzzles from more setters; it’s really great to see the ruleset used in all these different and creative ways, and now I feel like this definitely warrants adding, you know, that other one ;-) Anyhow, great work and thanks again!
