Logic Masters Deutschland e.V.

Circuit Board

(Published on 24. May 2022, 23:14 by Malrog)

Note: This is a less common variant, which some call 'double arrows'. I've been calling it 'sum lines' and the rules are simple, as you'll see.

If you haven't tried this constraint before (or even if you have, and enjoy it!), I recommend trying my puzzle Shattered Glass first, as it is an easier introduction to the constraint.

If you enjoyed this, and you're looking for a much harder challenge, why not try Doppelt by tallcat?

Also, I have to say a HUGE thank you to NXTMaster for their tireless efforts in testing this puzzle - it was not an easy road, due to my inability to do basic arithmetic!

Rules:

Normal sudoku rules apply.

Sum Lines: The digits in the squares on the ends of a line must sum to the same total as the rest of the digits on that line.

Cells separated by a black dot must have a ratio of 2:1. Not all dots are necessarily given (no negative constraint).

F-puzzles link

SudokuLab link

CtC Web App link (has solution check)

Solution code: Row 1 and column 9 (18 digits, no spaces)

Last changed on on 24. May 2022, 23:36

Solved by ryagami, AvonD, NXTMaster, kroutu, henter, Ragna, tallcat, Julianl, Lizzy01, smckinley, KyleBaran, Playmaker6174, Qodec, ranhothchord, Crul, monk, Bubba, geronimo92, cdwg2000, OGRussHood, skywalker, twototenth, OhHeyGuysItsMax, zorant, PippoForte, jalebc, Madoka42, qinqi
Full list

Comments

Last changed on 7. June 2022, 18:43

on 6. June 2022, 17:15 by Playmaker6174
Sweet and elegant puzzle with cool first half, the ending was quite tricky but luckily I got enough things to get the needed result :)
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Thanks for solving it, and for your feedback, very helpful.

Last changed on 28. May 2022, 21:07

on 28. May 2022, 20:14 by KyleBaran
I'm only halfway done and this is one of the most enjoyable puzzles Ive done recently, the flow is excellent
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Thank you! I am proud of the flow in this one, so I'm really pleased to hear that.

Last changed on 25. May 2022, 14:17

on 25. May 2022, 13:47 by Ragna
Fun puzzle! Very tricky. Thank you :-))
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You're welcome, I'm glad you enjoyed it. Thank you for trying it.

Difficulty:3
Rating:95 %
Solved:28 times
Observed:8 times
ID:000A0N

Variant combination New Online solving tool

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Solution code:

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