Logic Masters Deutschland e.V.

am 21. September 2022, 07:30 Uhr von Richard
Added tag for 10-in-9.

am 21. September 2022, 02:13 Uhr von 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...)

am 14. Juli 2022, 11:06 Uhr von Richard
Added link and tag for online solving. Thx Nick!

am 7. Juli 2021, 00:45 Uhr von 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

am 4. August 2016, 14:18 Uhr von ohm0123
Cool. Thanks.

am 9. Juni 2015, 06:02 Uhr von Richard
Small typo fixed.