Sailing
(Published on 15. February 2023, 00:18 by ThePedallingPianist)
> Play on CTC
> View sudoku on f-puzzles
> Solution guide
See Foghqwhgads and its attached solution guide for a different take on a similar ruleset!
Normal sudoku rules apply.
"Filler": Shade some cells such that each digit in row 1 (top) indicates the count of shaded cells in its column, and each digit in column 1 (far left) indicates the count of shaded cells in its row. E.g. a 3 in r1c8 indicates that there are 3 shaded cells in column 8.
"Yin Yang": All shaded cells must form one orthogonally connected region, as must all unshaded cells, and no 2x2 square can consist of only shaded or only unshaded cells.
"Balancer lines": Along balancer lines, the sum of the digits in shaded cells equals the sum of the digits in unshaded cells. Different colours are used to distinguish between different lines. All line segments are entirely visible (i.e. there are no line segments hidden underneath overlapping lines).
Solution code: Row 5, left to right
Comments
on 8. February 2024, 17:29 by rich_27
This is such an elegant puzzle. The interplay between the Yin Yang/Filler and the Balancer lines is beautiful, even if it does have a wicked last step!
on 24. January 2024, 07:58 by QuiltyAsCharged
Fascinating puzzle! I wasn't able to break through on my own. If you get stuck, I recommend watching the first part of the Foghgwhgads solution guide.
Once you learn the special features of the Filler-plus-Yin-Yang ruleset, it's much more approachable. Or if you can derive those yourself, my hat's off to you! :)
on 23. January 2024, 19:42 by ViKingPrime
As the previous solver mentioned, learned a lot about Yin Yang, though not so much a refresher course as a trial-by-fire. An incredible journey from start to finish, all the more rewarding for the challenge in getting there.
on 6. December 2023, 14:36 by fopkovic
Brutal puzzle, learned a lot more about Ying Yang with filler clues. Thank you.
on 1. September 2023, 18:53 by ThePedallingPianist
Solution guide added
on 26. August 2023, 00:35 by ThePedallingPianist
Links now include solution
on 18. February 2023, 17:37 by Snookerfan
Another great puzzle with this ruleset! Thank you
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Thank you for another solve and comment, much appreciated!
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A few months later, this is actually one of the best puzzles I have ever solved and it is disappointing to me that it didn't get the traction it deserved.
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Sorry I've just noticed this comment - thank you for such high praise! I am definitely very proud of this but I do lack the skills to mingle in discord communities etc and market my own puzzles as much as I should, especially when tackling this puzzle takes such a deep understanding of the ruleset! I've emailed it into CTC but it hasn't shown up on their channel, which to be honest isn't that surprising given how hard it is, but I'll keep pushing it around the community!
on 15. February 2023, 04:05 by Bjd
Wonderful puzzle! Thanks. Excellent video too, without which I surely wouldn’t have been able to solve this.
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Thank you! Yes it is quite a complex break in, but glad you found it worth it :D
