Double-or-nothing
(Published on 13. August 2022, 09:30 by tesseralis)
Inspired by zetamath's recent doubler puzzles, I thought it was time to raise the stakes... and go double-or-nothing!
Rules
Normal sudoku rules apply: place the digits 1-9 once in each row, column and 3x3 box.
Digits on an arrow must sum to the digit in the attached circle.
One cell in each row, column, and box is a "double-or-nothing" cell, which counts as either twice its value or as zero in any arrows it is a part of. Each of the digits 1-9 occurs exactly once as a double-or-nothing cell.
Solution code: Column 1 followed by column 9
Comments
on 24. August 2022, 20:18 by Samish
Very cool idea and clever construction. I did it the hard way not using the fact all the double-or-nothing digits must be unique, until I got stuck quite close to the end actually. I still enjoyed it a lot and can only imagine (unfortunately) how much smoother it would have probably been if I knew how to read a ruleset.
on 21. August 2022, 02:26 by Twan2797
Very smooth puzzle. Enjoyed it a lot.
on 18. August 2022, 22:34 by Christounet
Very nice follow up on zetamath's doubler puzzle ! These new rules kind of reset all knowledge about other rules that are combined with it. Thanks for this construction !
(I just could not disambiguate the nature of one of the "double or nothing" digit because it was not on an arrow.)
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@christounet perfectly balanced, as all things should be ;)
on 16. August 2022, 18:08 by twobear
Stunning construction! Lots of interesting logic in this puzzle. Thank you!
on 15. August 2022, 21:18 by DVFrank
Just a lovely construction! :^)
on 14. August 2022, 18:22 by Loktide
Loved the new rule
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Thanks loktide! hopefully I can think of more ideas like this :)
on 13. August 2022, 18:16 by Tilberg
Nice one. Took me a while, but I never lost confidence that I would make it through. Thank you!
Sehr hübsch. Hat mich eine Weile beschäftigt, aber ich hab nie die Zuversicht verloren. Danke!
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Thank you! I'm glad you enjoyed it ~tess
on 13. August 2022, 17:01 by JayForty
Great puzzle! Very clever construction. Thanks!
on 13. August 2022, 11:05 by PrimeWeasel
Very enjoyable!
