Logic Masters Deutschland e.V.

The Great Divide

(Eingestellt am 8. August 2026, 14:04 Uhr von marty_sears)

A 2nd puzzle featuring the 'Isofill' format that I introduced in 'Homogeneous', this time in collaboration with the legend sujoyku,.

    Rules:

    ISOFILL: Divide the grid into 10 regions, each with 10 orthogonally connected cells. Every cell in a region should contain the same digit. All of the digits 0-9 must appear in the grid.

    NABNERS: No two digits on a yellow line may be the same or consecutive.

    ZIPPERS: The two digits at either end of a lavender line sum to the digit on the central spot.

HOMOGENEOUS by Marty Sears

SUMMILARITY by Marty Sears

SORT BY SIZE by Marty Sears

THE GREAT DIVIDE by sujoyku and Marty Sears



TRESPASSING ALLOWED by sujoyku

SO CLOSE YET SO FAR by PrissyP and Lina

NEGATIVE CONSTRAINT ISOFILL by mathpesto

ISOFILL LOOP by mathpesto

MILL SIX UFOS (X-SUM ISOFILL) by Oddlyeven

SENSORY ISOFILL by Chefofdeath

ISOFILL QUAD SUMS by Christounet

ISOFILL REGIONAL PATH by Christounet

COMPARTMENTALISED by Lake

Lösungscode: Row 1 from left to right

Zuletzt geändert am 17. September 2026, 01:42 Uhr

Gelöst von Leaving Leaves, vollbesonderbar, NEWS, idanz, redgecko, Jesper, Quick Ben, IcyFruit, nicklase, philolologue, bboom, sujoyku, MathingChar, Dogfood, Miatc, achim-t, asynchronous, Snookerfan, dellC, ... hanna_werner, booteskey, richcard, Baconator, Cryccu, VeroS, KingGAEMING, Kolobra, Uhu, Djelibeybi, Niklas, ImpasseduPelican, MasonXu, ako, ch1983, rkond, eloiseb75, arauwer, misko, mir85, puddle0
Komplette Liste

Kommentare

Zuletzt geändert am 23. August 2026, 12:26 Uhr

am 23. August 2026, 12:23 Uhr von psams
Fun to solve, and always surprises me a bit how these isofill or chaos construction puzzles work out.

am 15. August 2026, 13:37 Uhr von Klausku
I love this ruleset. I wonder which other constraints would suit nicely with Isofill. Thanks for sharing.

am 13. August 2026, 01:24 Uhr von KelleyCook
I like these. Not hard, just a lot of placement.

am 11. August 2026, 16:28 Uhr von blackjackfitz
Huzzah!

Zuletzt geändert am 11. August 2026, 00:54 Uhr

am 10. August 2026, 22:41 Uhr von Djirt
Спасибо, Marty + sujoyku, прекрасная головоломка!

Zuletzt geändert am 10. August 2026, 22:23 Uhr

am 10. August 2026, 22:23 Uhr von Snaques
I feel like a total buzzkill for giving this just nice, but I just think this ruleset would work better on an 8x8 grid. There was just quite a bit of counting how far each number could reach.

Now with that out of my system, this was really fun ruleset and I did quite enjoy the puzzle. I'd go with 3*, but as Marty said it's just LMD being LMD.

Thanks for setting these up Marty!

Zuletzt geändert am 10. August 2026, 18:04 Uhr

am 10. August 2026, 16:23 Uhr von Shawn4168
Wonderful puzzle as always. But I'm with the other commenters here, I'm baffled by the 2* rating, I'd easily give this a 3 or a 4, whereas the previous puzzle was easily a 2* instead of the 3* that it got.

Marty: I am also baffled by the 2* rating, but that's LMD for you :D

am 10. August 2026, 05:23 Uhr von amchap
Wow. Found the break-in fairly quickly, but still found this a very tough solve. 4* for me. Loved it though.

am 9. August 2026, 21:55 Uhr von thoughtbyte
Brilliant fun!

Zuletzt geändert am 9. August 2026, 18:10 Uhr

am 9. August 2026, 14:46 Uhr von mscha
Whew...
Who gave this 2 stars?? 4 stars for me, closer to 5 than to 3.
I got all (I think) the major deductions pretty quickly, but still, no break-in, there seemed to be many possible ways to fulfil the requirements.
After sleeping over it, I gave it another try. I finally found something I was pretty sure about (and later found a much easier way to prove that). After that, I gradually chipped away until it was done.
Beautiful puzzle, though!
Edit: after a re-solve, I realize that it _was_ a pretty obvious thing that I missed. If I had spotted that, I could have been halfway in no time. 3 stars for me now.

Zuletzt geändert am 9. August 2026, 11:58 Uhr

am 9. August 2026, 11:57 Uhr von BigHead
Wonderful! I found it much easier after seeing Simons recent video on the other one. I thought there were some interchangeable digits after the first two thirds of the puzzle, and had to stare at it for a good ten minutes before it clicked! Other than that it was a steady march.

am 9. August 2026, 09:49 Uhr von Nairurian
Nice twist, I found it slightly harder than a 2* but that might be since I wasn’t familiar with the concept.

am 9. August 2026, 03:16 Uhr von Tortugo
Fabulous! Easier than the last isofill, perhaps because of what I learned doing that one.

am 9. August 2026, 02:34 Uhr von yuripuppies
The interactions between the isofill and the nabners are so powerful! Gave it 2*, I found it significantly easier than the previous one

am 9. August 2026, 01:01 Uhr von ScatterBrain
This was a great puzzle. I found it to be more of a 3 star puzzle. Thanks for setting!

am 8. August 2026, 23:59 Uhr von The Pi Guy
Hmm, I wonder how long it will be before Simon solves this one…?! :P

am 8. August 2026, 23:09 Uhr von polcat
Brilliant! Having never done a puzzle like this, I found it significantly harder than a typical 2*

am 8. August 2026, 22:34 Uhr von Christounet
More like these, please! Thanks :)

am 8. August 2026, 19:38 Uhr von Piatato
Neat one, thanks!

am 8. August 2026, 18:32 Uhr von Franjo
Thank you both very much for creating and sharing another lovely puzzle featuring this funny new ruleset. Wonderful stuff!

am 8. August 2026, 17:35 Uhr von Snookerfan
Very fun and approachable, thanks!

am 8. August 2026, 16:40 Uhr von bboom
Interesting puzzle, the isofill mechanic requires some different thinking, but the puzzle is quite approachable once you get your thinking straight.

am 8. August 2026, 16:38 Uhr von sujoyku
Thank you for introducing this new variant and the fun collab, Marty!

Zuletzt geändert am 8. August 2026, 16:36 Uhr

am 8. August 2026, 16:22 Uhr von philolologue
Oh, this was 24 minutes of brilliant pure fun! Always gratifying to be able to solve a Marty Sears and Sujoyku puzzle!

Schwierigkeit:2
Bewertung:97 %
Gelöst:339 mal
Beobachtet:2 mal
ID:000U93

Lösung abgeben

Lösungscode:

Anmelden