Sudoku Variants Series (080) - Sudoku 0-9
(Published on 9. June 2015, 00:00 by Richard)
Sudoku 0-9
Solve online in Penpa+ (thx Nick Smirnov!)
Place the digits from 0 tot 9 in every row, column and 3x3-block. Two digits have to be placed in the cells with diagonal lines, in any order.
Solution code: Row 5, followed by column 8. For cells with two digits the smallest digit first.
Comments
on 21. September 2022, 07:30 by Richard
Added tag for 10-in-9.
on 21. September 2022, 02:13 by Nylimb
Nice puzzle. I ran across this while solving random SVS puzzles. I hadn't known that the "10-in-9" / "Schrodinger cell" idea had been around for so long.
Suggestion: Add the "10-in-9 (Variant)" tag so this puzzle will show up at https://logic-masters.de/Raetselportal/Suche/erweitert.php?start=0&tag_id=9401 .
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Reply: Thx for the suggestion!
I know this ruleset is used a few times in championships or competitions, that's why it is part of SVS. I wasn't particularly happy with how this one turned out, but wasn't able to get a better version without giving up on symmetry.
But thanks for the suggestion; it is now in the list albeit a bit off: by number of solves, difficulty and beauty-rating. :-)
Tight fit (SVS 204) uses more or less the same principle, but in a small grid. A decade ago this type was used quite regularly in contests, often among the easier puzzles.
BTW: I noticed you solving some of the old SVS-puzzles! Thanks! In hindsight, I think a lot of the puzzles up to number 150 or so are too much on the easy side; I would never construct them like that if I should make them now; things have changed a lot in the last 10 years...
@Richard: Thanks for the history. (And I don't mind an easy puzzle now and then...)
on 14. July 2022, 11:06 by Richard
Added link and tag for online solving. Thx Nick!
on 7. July 2021, 00:45 by Nick Smirnov
Penpa (diagonal lines are horizontal, you have to switch to Number 1/4 for placing digits in cells with such lines):
https://git.io/JcMX7
on 4. August 2016, 14:18 by ohm0123
Cool. Thanks.
on 9. June 2015, 06:02 by Richard
Small typo fixed.
