Logic Masters Deutschland e.V.

[3rd anniversary of Entropy] EnTRIOpy

(Published on 3. December 2024, 05:28 by Mad-Tyas)

Exactly three years ago I published the first puzzle with the Entropy rule. In now 70 puzzles I have combined this unique global constraint with numerous variants and researched it extensively. And I'm always happy to see that the variant has found many friends.
For this anniversary I created something special.

Rules:

Sudoku: Fill every row, column and marked 3x3 box with the digits 1-9.

EnTRIOpy: Each row, column and marked 3x3 box contains exactly three Normals (value = digit), three Doublers (value = digit * 2) and three Triplers (value = digit * 3). Each 2x2 box in the grid has to contain a Normal, a Doubler and a Tripler.

Region Sum Lines: Box borders divide blue lines into segments of the same sum. This sum may be different for different lines.

Have fun solving!

Sudoku on:
SudokuPad

Solution code: The values of the four corner cells clockwise starting with the top-left corner

Last changed on on 3. December 2024, 15:37

Solved by h5663454, 9Rookienumbers, fractalminding, Snookerfan, mihel111, askaksaksask, SKORP17, lianarox, Scruffamudda, Bankey, Clara123, agueybana, bianbianPEI, bansalsaab, shteev, flipout, Brodie2000, Blake Saligia, Mikemerin, belnovic, 0123coolkid
Full list

Comments

on 9. December 2024, 05:28 by Mikemerin
I love entropy puzzles and wanted to solve a difficult one as my 1,000th LMD solve. I’m glad I chose this one as it was a pleasure to work through. While it was very challenging, the logic leading to the solve path was always enjoyable from start to finish.

on 4. December 2024, 13:49 by Bankey
Very hard but great fun. Thanks, @ Mad-Tyas, and congratulations for the milestone :).

on 3. December 2024, 18:09 by askaksaksask
Wow. I got quite stuck initially, but i came back to it with a fresh set of eyes, and my gosh is this a beauty. This is quite a tough puzzle, I'd agree with anything above 4*, but this entriopy innovation (and the setting) is genius!!

on 3. December 2024, 16:11 by mihel111
Happy anniversary!!! Great idea, great puzzle. 4* seems fair to me.
Thanks a lot Mad-Tyas.

on 3. December 2024, 15:37 by Mad-Tyas
Adjusted difficulty based on solvers feedback

on 3. December 2024, 13:38 by Snookerfan
Great puzzle! Thank you

on 3. December 2024, 12:39 by fractalminding
The idea is interesting. But it's too difficult for me. I spent half a day to solve it. I think it's 4 stars. Thanks for the challenge haha

on 3. December 2024, 12:34 by 9Rookienumbers
Wow, what an amazing twist on entropy, an utter masterpiece. Definitely 4* for me

Difficulty:5
Rating:85 %
Solved:21 times
Observed:4 times
ID:000KYV

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