Here is my first region sum lines sudoku with an additional antiknight constraint. I have been working on this puzzle for some time and I am happy with this final outcome. I hope you enjoy it. Your comments and ratings are highly appreciated as usual!
RULES: Normal sudoku rules apply. For each line, digits on the line have an equal sum within each box it passes through. Cells separated by a knight's move in chess cannot contain the same digit. The colored cells contain four unique digits.
Solution code: Row 1 followed by column 9.
on 6. July 2024, 16:58 by benzonitrile
The first part was super interesting with the Knight's move constraint, and the subsequent disambiguation was even more beautiful. VERY well done constructing this puzzle :) Loved this (although I am 2 years too late)!
on 2. July 2022, 16:04 by Frans Wentholt
Very nice puzzle! I enjoyed it from start to finish!
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Thank you! Happy to see that you enjoyed it.
on 2. May 2022, 14:25 by Christounet
Very nice puzzle with a powerful knight's move constraint. Felt more like a 4 star puzzle this time (compared to your usual 5 and even 6 star puzzles !), probably because I'm so used to all the knight's move tricks now. Beautiful design as well ! The empty grid looks like a Mondrian painting with its straight lines and primary colors !
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Thank you for solving the puzzle and your comment. I was also thinking of difficulty of the puzzle as around 4.5 stars.
on 2. May 2022, 10:31 by kolot
Thanks everyone for your great comments! Happy to see that you all enjoyed the double fun.
on 2. May 2022, 03:22 by Playmaker6174
Very fun-tastic puzzle, had to divide the solve into two mini parts :}
on 2. May 2022, 02:05 by Agent
Great puzzle! A nice reminder that knight's move constraint is overpowered sometimes :)
on 1. May 2022, 21:44 by Krokant
Very entertaining in unique ways. :)
on 1. May 2022, 20:02 by DVFrank
Very nice! :^)
on 1. May 2022, 18:02 by ___
had a lot of fun making progress on this. it felt like 2 puzzles in 1.thanks kolot!
on 1. May 2022, 10:28 by Tilberg
Colorful puzzle! ;-) I loved both parts of the solve.
on 1. May 2022, 04:26 by Elliott810
Beautiful puzzle! Stunning interactions between the constraints. Take a bow and thanks for sharing:)