Logic Masters Deutschland e.V.

Double, Double, Toil and Trouble

(Published on 11. February 2026, 13:27 by gincal)

THE RULES

Normal 6X6 Sudoku rules apply: The grid must be filled with the numbers 1-6, such that every digit appears exactly once in every row, column, and box.

Arrows: Digits along an arrow's path sum to the value indicated on said arrow's circled cell.

Thermometers: Digits must increase in value along a thermometer, starting from the bulb end.

Parity Lines: Digits along a red line alternate between odd and even.

Quadruples: Digits appearing in circles placed on grid intersections must appear in the surrounding cells. If a digit appears in a circle more than once, it appears in the surrounding cells more than once.

Play it at Sven's SudokuPad here

THE SCOTTISH PLAY

Double, double toil and trouble;
Fire burn and caldron bubble.
Fillet of a fenny snake,
In the caldron boil and bake;
Eye of newt and toe of frog,
Wool of bat and tongue of dog,
Adder's fork and blind-worm's sting,
Lizard's leg and howlet's wing,
For a charm of powerful trouble,
Like a hell-broth boil and bubble.

Double, double toil and trouble;
Fire burn and caldron bubble.
Cool it with a baboon's blood,
Then the charm is firm and good.

William Shakespeare

I welcome each and every comment or suggestion.

Solution code: Last Row

Last changed on on 13. February 2026, 13:13

Solved by ThePedallingPianist, anton_anton, 28righthand, L00ping007, PinkNickels, Fizz, cygne, jalebc, doomedmageknight, zonny, vrcngtrx_, davew, RailMan, pookster, rcg, Wlam, Fisherman, milxqueen, abadx, ... Tompzini, Wenir, Raistlen, Blackophelia, moss, DetroitPiston, CarnacTheMagnificent, sme, Titatovenoor, Pioooooo, samking, david.woitkowski, CitrusGremlin, InterestingAlgae, Statistica, IMAY1990
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Comments

on 12. February 2026, 02:54 by puzzlelad
Really enjoyed this puzzle! The sudoku is easy but I think the parity logic is worthy of inching into 2*.

Difficulty:1
Rating:91 %
Solved:134 times
Observed:1 times
ID:000RFC

Puzzle variant Variant combination Beginners

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