Logic Masters Deutschland e.V.

Convergence Lines

(Eingestellt am 7. August 2026, 08:23 Uhr von MatthewT)

Play Online: SudokuPad

Rules

Sudoku
Normal Sudoku rules apply.

Convergence Lines
An Old Gold colored line is a Convergence Line.

Moving away from the bulb, the values along a Convergence Line converge toward the bulb value. Specifically, each successive cell must be strictly closer to the bulb value than the previous cell.

Equivalently, the absolute difference between a cell's value and the bulb value must strictly decrease at each position along the line, moving away from the bulb.

Note: Each line extending from a bulb is evaluated independently (i.e. a two-way line functions as two separate Convergence Lines sharing a bulb).

Constraint Example

Valid Convergence

Invalid Convergence

For other setters and curious solvers: A standalone companion report exploring the development, design, and logical framework of Convergence Lines is available in this PDF. (The primary discussion is spoiler-free. Puzzle-specific spoilers are confined to the final section.)

Lösungscode: Row 6, Left to Right.


Gelöst von Aaravos, Chaka, wuc, FireShot7, nicklase, raaaaa, The Pi Guy, erml, Dr Logic, PierreTombal, ShuffBeeeell, Mattisahuman, Fool on Hill, Megalobrainiac, ashwin, filetofish, barnacle, ninjcats, mosse, ... SPOU1, sparkymanu, Crul, Khatru, antzervos, SS20x3, Elizy, PuzzlePatzer, firespire, Vaurien, illegel, ebulku, QuozBat, kangaroo, sd_boston, ZornsLemon, Hellolol, goldensun, Smartacus, Hizuriya
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Kommentare

am 7. August 2026, 19:50 Uhr von barnacle
Loved doing some propagation like thermometers. It felt very intuitive to me, and it was fun to work with. Very nice puzzle.

am 7. August 2026, 16:20 Uhr von ShuffBeeeell
I like the puzzle's logic, framing it on my mind as a kind of reverse thermo helped me wrap my head around it and solve in a solid time. 3 stars, very fun, thanks!

am 7. August 2026, 15:15 Uhr von Dr Logic
Super interesting ruleset, the PDF goes into a lot of detail which I like. Difficulty of 2-2.5 stars however, no deduction is difficult to spot.

Thanks for setting, excited to see what you make next :)

am 7. August 2026, 13:58 Uhr von The Pi Guy
That was absolutely magic! What an idea and what a puzzle. Loved it! ❤️ Would highly recommend.

Congratulations as well on publishing your first puzzle. :)

am 7. August 2026, 11:26 Uhr von FireShot7
Flows very nicely!

am 7. August 2026, 10:50 Uhr von wuc
Great new ruleset to me. Very approachable. Got it rather quickly how things work. 2* from solve time. Looking forward to more. Great setting thx.

am 7. August 2026, 09:20 Uhr von Chaka
Very cool idea! 2,5* for me. Thanks for setting and sharing!

Schwierigkeit:2
Bewertung:90 %
Gelöst:43 mal
Beobachtet:1 mal
ID:000U89

Rätselvariante Neu Online-Solving-Tool

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Lösungscode:

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