Logic Masters Deutschland e.V.

Double Take (Flinty Collab)

(Published on 23. August 2026, 00:44 by palpot)

This puzzle was a collaboration with Flinty for Scojo's weekly setting prompt. This week, we're showing some love to ThePedallingPianist and his expanding family!

To solve online, click here or on the image below.


Rules

Normal sudoku rules: Place the digits 1 to 9 in each Row, Column, and 3X3 box.

Every clue number outside the grid appears exactly twice. One appearance is a Full Rank clue and the other is an X-sums clue. It is up to the solver to determine the nature of each clue.

The digits on columns and rows, read in both directions, make a total of 36 numbers of nine digits each.

Full Rank clues outside the grid have a value equal to the rank for the indicated row/column among those 36 numbers, where the lowest is 1 and the highest is 36.

X-Sums clues outside the grid give the sum of the first X digits in their respective row or column, where X is the digit nearest the clue.

Solution code: Row 5 digits from left to right.


Solved by Flinty, Scojo, aqjhs, ThePedallingPianist, karlmortenlunna, doomedmageknight, Xazzops, Saltensity, Elliott810, Snookerfan, goodcity, Gribba Bibba, steperlich, Miatc, clock, Khatru, SKORP17, ... damo_89, Andrewmi3, hearnicane, lianarox, Piatato, KirkFox, Black_Doom, pmatos, Arheus, Jesper, shifman23, farodin64, Wahaj, Exigus, Mazen5, gambvici, toxicfig, ThomasR, lulu614, Astraeus, Vodakhan
Full list

Comments

on 24. August 2026, 20:20 by Arheus
Brilliant!

on 24. August 2026, 08:06 by Piatato
Awesome!

on 24. August 2026, 03:02 by hearnicane
Honestly, loved how the constraints came together and played a part in the whole solve. Easily one of my favourites!

on 23. August 2026, 21:56 by damo_89
Very smooth

on 23. August 2026, 14:13 by goodcity
This clue placement was perfect !

on 23. August 2026, 14:04 by Snookerfan
Very nice hybrid! Thanks!

on 23. August 2026, 11:55 by Elliott810
Brilliant puzzle! Thank you both:)

Difficulty:3
Rating:96 %
Solved:40 times
Observed:1 times
ID:000UIB

Variant combination

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Solution code:

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