X-Terior
(Published on 21. December 2025, 11:03 by oskode)
Rules:
- Sudoku: Fill all rows, columns and marked 3x3 regions in the central 9x9 grid with the digits 1-9 without any repeats.
- X-Sums: Numbers outside the grid indicate the sum of the first X digits in that row or column, where X is the first digit seen in the direction of the clue.
- Palindromes: Cells an equal distance from a grey line's center (indicated with a small square) contain the same number.
Click here to play online!
Ratings and comments are very much appreciated. Thank you for playing!
Solution code: The digits in row 5 of the central 9x9 grid, from left to right
Last changed on on 21. December 2025, 12:24
Solved by tuturitu, mihel111, efnenu, Andrewsarchus, sorryimLate, jordanza, by81996672, mellowrobinson, Piff, redgecko, marcmees, Crul, TripleABattery, gdc, jmw, farodin64, SKORP17, thoughtbyte, abihummel, ... DanishDynamite, Ragna, TaeChi, h5663454, PuzzBmcg, Nagesh, scushuaishuai, xiaozhu, caiogi, lcy.30, LehanLehan, orsonwu840, Tompzini, dkfan9, Exigus, SimiC, DPigeon, LabRat, Kino, cqq, paranoid
Comments
on 23. December 2025, 12:58 by Exigus
Very cool, thanks!
on 22. December 2025, 00:05 by Ragna
Wow!!!
Thank you. :-)
on 21. December 2025, 22:28 by sujoyku
What a lovely, thought-inspiring puzzle! Thank you, oskode!
on 21. December 2025, 20:11 by thoughtbyte
Great puzzle, thanks!
on 21. December 2025, 16:21 by marcmees
Fun & smooth. Thanks
on 21. December 2025, 12:39 by Andrewsarchus
lovely interactions!
Last changed on 21. December 2025, 12:29
on 21. December 2025, 12:24 by oskode
Fixed incorrect rule name
