Colored Groups

(Published on 8. October 2025, 15:50 by Nahileon)

Normal Sudoku rules apply.

Color each cell in one of two different colors such that cells containing the same digit have the same color.

If an orthogonally connected group of cells of the same color has one or more circles in it, the circled cell(s) contain the size of that group.

Sudokupad

Solution code: Row 1 in the sudoku.

Solved by Clara123, lianarox, PierreTombal, SKORP17, Dentones, clock, lmdemasi, zeniko, Onyoubi, blueberrypug, bansalsaab, gigglingCaduceus, 379475229, Snookerfan, oskode, henrypijames, sehringdipity, goldpuffle, hurrdurr, Exigus, Blake Saligia, Malakree, dipiz, Franjo, bianbianPEI, Pedro Levi, CalvinM

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Comments

today, 18:31 by Franjo
Absolutely fascinating! And much easier than expected. (I gave 2.5* - normally it’s the other way round…) Thank you very much for creating and sharing this beautiful puzzle.

today, 13:28 by Exigus
Beautiful. I remember a puzzle that felt very similar but I think it was divided into odds/even. Anyway I loved this. Thanks!

yesterday, 13:51 by oskode
Really cool puzzle, thank you!

yesterday, 11:05 by Snookerfan
Sublime! Original puzzle wit a very enjoyable solve. Really fun how the digits in the circles resolved. Wonderful, thank you!

on 8. October 2025, 22:33 by lmdemasi
Very enjoyable.