the cost of giving up
(Published on 21. December 2025, 05:05 by aqjhs)
I had this idea for a Doppelgänger puzzle, and then ThePedallingPianist told me (spoiler alert) there's already a very similar puzzle... 👀
- Doppelgänger Sudoku:
- Fill each cell of the main 9x9 grid such that every row, column and 3x3 box contains a 0 and eight different digits from 1-9.
- No two rows, no two columns and no two boxes may be missing the same digit.
- For each 0 in the grid, the digits missing in its row, column and region must be three different digits.
- Digits may not repeat inside a cage and must sum to the indicated total.
Online in Sudokupad (and with extra note space).
See also:
- the year of the dög
- huisgenoot gezocht (ft. ChinStrap)
- don't hurt yourself (ft. Calvinball)
- alte karte / ferneiland
- got too many pages stuck together + zuul with ThePedallingPianist
- split pearsonality / dopealgänger
Solution code: Digits on the column missing a 7, top to bottom.
Last changed on -
Solved by MathGuy_12, tuturitu, jmw, ThePedallingPianist, h5663454, steperlich, Isael, palpot, kodra22, zeniko, Clara123, SIGMA, MaxSmartable, harryb, laquartetfan, wullemuus, DaleVandermeer, paranoid, earthpuzzles, songch, Hazem-77, Zzzzz..., xiaoan, steeto, BlazingSnow, han233ing, bodemeister
Comments
on 9. August 2026, 10:56 by bodemeister
It's not surprising at all to hear more than one person came up with the foundational idea in your and my puzzles. The implications really are quite amazing! I'm glad you posted yours and I enjoyed solving it.
on 21. December 2025, 05:26 by MathGuy_12
Sucks when someone else has your great idea first, but it is still a great idea nonetheless!
