Logic Masters Deutschland e.V.

A Blind Killer

(Published on 17. January 2023, 08:29 by bodemeister)

This puzzle is a killer sudoku with cage sums that must be determined as part of the solve. If you enjoy math and interesting logic, this puzzle is for you! You can solve the puzzle here at CtC or by printing the picture below. Enjoy and please comment!

Rules:
  1. Normal Sudoku Rules Apply.
  2. The sum of the digits in any cage must not equal the sum of the digits in any other cage.
  3. If two cages touch along an edge, then the sums of the digits in those two cages cannot be consecutive integers.
  4. Each diagonal of length four or greater contains a repeated digit.

Solution code: Row 8 Column 6

Last changed on on 24. February 2024, 14:07

Solved by Gryllulus, Tilberg, Dentones, Ineffabilis, cdwg2000, Yawnus, sunchi, Bankey, wullemuus, drasimov
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Comments

on 7. March 2024, 04:03 by drasimov
Very strong sudoku

Last changed on 6. March 2024, 18:01

on 5. March 2024, 09:09 by wullemuus
What an incredible creative construction! On a first glance it looks like unsolvable, but then it reveals its clean solvingpath due to the wisely chosen killer cages and where they are placed. Also I liked the ending- even there a bifurcation was avoided. Mindblowing!
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Thanks! I'm glad you enjoyed solving it! This puzzle idea was what got me started designing puzzles and I spent upwards of 100 hours arriving at this puzzle. Definitely no bifurcation needed, but some scratch paper might be handy!

Last changed on 24. February 2024, 14:06

on 23. February 2024, 20:36 by Bankey
Had abandoned this halfway a few months ago. Came back to it today and I guess the persistence paid off! Very tough, and very creative logic. Needs proper analysis of the various possible combinations in different boxes. On the whole, a fun ride that remains challenging till the very end. Definitely a 5*, at least for me. Thanks, @ bodemeister :).
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Hi Bankey, thank you for your comment! I'm super happy you came back to finish it. Everything you wrote is spot on. You are correct it is a 5-star difficulty puzzle. I will change it now.

Last changed on 5. March 2024, 09:54

on 17. January 2023, 16:39 by Tilberg
Some very nice logic! Thank you.

Einiges an schöner Logik. Danke!
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Thanks!

Difficulty:5
Rating:N/A
Solved:10 times
Observed:2 times
ID:000CMW

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Solution code:

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