Logic Masters Deutschland e.V.

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.

Solve online here: SudokuPad Puzzle

If you like this puzzle you may enjoy some of my other puzzles too, click HERE to see the other puzzles I have made.

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, ... NeeBats, Kcafecalb, dskaff, thomamas, elkapparin0, rlg, dickey, synth, buzzard, Stargazing Albatross, NineK, Martl, crashkaths, beea, turtleducktess, anthe95, Nosferatu, Omnicole, misha, edwardio0
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Comments

yesterday, 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

yesterday, 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.

Difficulty:1
Rating:87 %
Solved:94 times
Observed:0 times
ID:000ST2

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Solution code:

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