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, ghosting, IcaroLopes, killer_rectangle, steeto, Sewerin, BlazingSnow
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:88 %
Solved:27 times
Observed:14 times
ID:000KYV

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