Logic Masters Deutschland e.V.

Statera (159, Quad Sums)

(Published on 30. September 2025, 07:00 by Crusader175)

Rules:

Normal sudoku rules apply.

159: Digits in columns 1, 5, and 9 indicate the column in which the digit 1, 5, or 9 (respectively) appears in that row.

Quad Sums: A circle at a corner implies that one digit is the sum of the remaining three digits at that corner.

Even: Digits in grey squares must be even.
Puzzle Link: SudokuPad

My youtube channel on solving sudoku: Crusader Puzzle

Solution code: Row 9


Solved by Donatello_86 , by81996672, marcmees, SeveNateNine, tuturitu, Bjd, mathpesto, cryptique, Sotehr, jwsinclair, Joyofrandomness, SKORP17, mattnburris, Exigus, zrbakhtiar, AKernel, brandon_bot, Myxo, ... dzamie, ominit, Lion Crow, philolologue, Toxter, corrie, TrivialHomology, HonkIfYouLoveBeer, Simor, Epsiloneuclid, taniabn, Senjo, jonathanwolff, egglet, miranda_9, mackant1, Firmus, randall
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Comments

on 7. October 2025, 00:45 by dzamie
I found a 6/7 pair partway through and got really curious as to how it would eventually get eliminated, since all the clues that directly saw it eventually got filled out. Pretty neat to see it finally resolve.

on 1. October 2025, 12:23 by Snookerfan
Brilliant puzzle, really fun, thank you!

on 30. September 2025, 19:13 by Exigus
Don't think I've solved quad sums before, some very nice deductions could be made. Thanks!

on 30. September 2025, 13:47 by mathpesto
Very cool interactions between the constraints!

on 30. September 2025, 08:20 by marcmees
smooth solve. thanks

Difficulty:3
Rating:90 %
Solved:50 times
Observed:1 times
ID:000PFU

Variant combination Online solving tool

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Solution code:

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