Circle Gets The Square

(Published on 18. May 2026, 17:09 by Duarte-Carvalho)

Normal sudoku rules apply. Quadruplets: every digit in a circle must be assigned to one of the four surrounding cells.

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Solution code: box 5

Solved by Reisen, Jodelbanane, vrcngtrx_, bloodhovnds, FischProf, benvegmond, rictech, Jayem, maria.pllr, arteful, hige, jeffrey.l.byrd19, Big Tiger, fuxia, NicolajN, Rearden, SKORP17, Roberto, Frank Huang, ... jalebc, sabotager, Docbes, paranoid, BlackApolloX, eripsa, matthew.v, snuuba, pepe74287, Kirra, Manitary, flaemmchen, carsten, Montikulum, IMAY1990, Csmith928, ly_ra17, jkl, me and the paws, Krisz

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Comments

on 19. May 2026, 17:26 by NeeBats
I was stuck because I thought that the digit in the circle must be assigned to only one of the four surrounding cells. But then I tried with more than one and it went smoothly

on 19. May 2026, 03:59 by Bruce Carter
Being retired, I have time to solve several puzzles a day. This one delighted me with some bewildering notation. You just picked and picked and then you'd get ten digits in a row. Then back to picking. Delightful! Just plain fun to solve.

on 18. May 2026, 20:36 by Big Tiger
I think an experienced Quad solver will find this to be 1 star, someone new to the concept and strategies will face a puzzle that is a bit challenging and a good introduction to this particular rule.

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Difficulty:
Rating:	89 %
Solved:	185 times
Observed:	0 times
ID:	000ST2

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