Summon
(Published on 28. December 2025, 14:26 by KNT)
Place the numbers from 1 to 4 in each room exactly once such that no number touches itself, even diagonally.
Connected blocks of numbers in a row or column form numbers by reading left to right or downwards, respectively. Clues outside the grid are equal to the sum of all such numbers within the corresponding row or column.
SudokuPad
penpa+
Solution code: The last row, then the first column, with X for empty cell.
Last changed on on 1. January 2026, 19:23
Solved by cyddrdrd, Jesper, Nick Smirnov, Myxo, zuzanina, Piatato, JustinTucker, r45, PixelPlucker, Taeqle, biasedcog, widjo, CutieRainbow, kdwji, smckinley, SFP, jkuo7, misko, han233ing, Clara123, Tom-dz, oskode, Mr_tn
Comments
on 10. January 2026, 13:54 by oskode
Took me 3 hours, worth every second of my time. What a masterpiece!
on 29. December 2025, 11:31 by Piatato
Awesome!
on 28. December 2025, 23:07 by Myxo
i have been summonde
on 28. December 2025, 22:30 by Jesper
Very cool!
Last changed on 28. December 2025, 21:43on 28. December 2025, 21:43 by cyddrdrd
Require a lot of arithmetics but it’s so brilliant!