A Bob Ross Doppelganger
(Published on 2. December 2025, 23:29 by Kafkapharnaum)
Everybody can do this.
Seeing the
Scojo prompt but not having enough time to really come up with something truly new, I figured I'd still propose a quick redux of a puzzle I had made in the style of
Azireo's awesome series of puzzles teaching the mechanics of all kinds of rulesets. So if any of the new ones that have been posted somehow still don't quite feel approachable enough, this one should give you the basics needed to then go and tackle them.
And here is again the dynamic link listing
most of the Doppelganger puzzles –
most as a handful are not represented due to some differences in the rules or wording, so check out all of these setters' catalogs!
RULES
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 a 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.
KILLER
– In cages, digit may not repeat and must sum to the total indicated in the top left corner of the cage.
SOLVING LINKS
Solve on Sudokupad
Solve on Penpa
Solution code: Column 7 of the main grid (top to bottom)
Last changed on on 4. December 2025, 01:31
Solved by jordanza, gdc, johnreid, bodemeister, mlgunicorn22, h5663454, jalebc, Fizz, marcmees, SKORP17, Piatato, robokong, josemadre, MaxSmartable, tuturitu, DaleVandermeer, steperlich, Elizy, dzamie, ... wullemuus, Strawbunny, Tompzini, zrbakhtiar, Shmartus, curunir22, gfoot, Uhu, brimmy, Crul, GorgeousNicko, FischmitFahrrad, KenGlue, Drewpacabra, amb, jgarber, Frank Puzzles, tim_vermeulen, SennyK
Comments
on 10. January 2026, 07:25 by SennyK
Lovely easy doppelgänger, thank you for setting!
Last changed on 21. December 2025, 21:01on 20. December 2025, 16:07 by KenGlue
Nice approachable puzzle!
I'll try the other one when I have the time :)
.................
Hey, it had been while! Thanks a lot for the kind words, much appreciated, and no hurry for the other one, it's not going anywhere -- enjoy your year-end/holiday time! :D
Last changed on 4. December 2025, 01:11on 3. December 2025, 23:19 by Piatato
Nice and easy indeed!
.....................
Thanks a lot Piatato, glad to hear you enjoyed and to have your seal of approval on that tutorial! :D
Last changed on 4. December 2025, 01:10on 3. December 2025, 23:03 by VitP
an actually "approachable" doppelganger puzzle - legitimate level 2.
it looks like this variant has no actual strong rules similar to "no 5 on a gw line"
...............
Thank you for the comment, glad to hear that this tutorial-like puzzle fulfilled its purpose -- and yep, much like with the 'Schrödinger Cells' variant, having access to the 0 opens up a whole lot of new possibilities!