Xandwich
(Eingestellt am 4. Januar 2022, 01:14 Uhr von Qodec)
Normal sudoku rules apply: Each row, column, and region indicated by thick borders in the grid must contain the digits 1 to 9 once each.
Each clue is a sandwich clue, or an X-sum clue, or both.
- A sandwich clue shows the sum of all digits between the 1 and the 9 in the indicated row or column.
- An X-sum clue shows the sum of the first X digits in the indicated row or column, where X is the digit closest to that clue.
You can play this puzzle online using:
- CTC app: https://tinyurl.com/4dtn2vc2
- f-puzzles: https://f-puzzles.com/?id=y5n449g9
Enjoy!
Lösungscode: Row 5 and column 5. I.e. the 9 digits in row 5 from left to right, followed by the 9 digits in column 5 from top to bottom, for example: 123456789123456789
Kommentare
am 15. Juli 2024, 21:59 Uhr von StephenR
What an intricate puzzle, thanks. I will never have the first idea of how setters come up with puzzles like this!
am 20. Oktober 2023, 09:21 Uhr von Bankey
That was fun. Thanks, @ Qodec :).
am 29. Mai 2022, 16:51 Uhr von Christounet
Very nice interactions between X sums and Sandwiches ! Got a little lost in the mid solve because I did not spot a deduction in Box 4 right away. So I have to thank you for that eureka moment which felt very good when i found that little missing piece of the puzzle !
am 8. Januar 2022, 16:02 Uhr von Kabuki73
Stunning puzzle! Excellent setting and break-in. Got stuck during the solve more than once but didn't surrender;-)
am 6. Januar 2022, 16:04 Uhr von ICHTUES
Great stuff here.
am 6. Januar 2022, 05:34 Uhr von twototenth
Stunning work as usual. My brain earned a few new wrinkles solving this one.
am 4. Januar 2022, 19:02 Uhr von abed hawila
very enjoyable and satisfying! Exceptionally optimized construction, couldn't expect less from you ;)
am 4. Januar 2022, 18:56 Uhr von mathpesto
Lovely puzzle! Took me a while to figure out how to begin, but once I did I felt like this was set up to be a very smooth--albeit challenging--solve.
am 4. Januar 2022, 17:40 Uhr von Vebby
Very enjoyable! Thanks Qodec :)
am 4. Januar 2022, 16:46 Uhr von Niverio
This was probably my fastest 4-star difficulty solve! And that was not because the deductions were easy, but because it was pretty well telegraphed where to look. An incredible flow in this one!
am 4. Januar 2022, 12:38 Uhr von aruvi
ooh i love the start. the best puzzles often set up a set of internal axioms that get created by the ruleset and geometry. great construction, bit brutal but very worth it.
am 4. Januar 2022, 12:37 Uhr von marcmees
Nice. thanks.
am 4. Januar 2022, 02:58 Uhr von Playmaker6174
Very clever construction (especially the opening), how some of the clues interact each other really surprises me :o
