Rossini
Solve online in Penpa+ (thx Nick Smirnov!)
Place the digits from 1 tot 9 in every row, column and 3x3-block. The arrows outside the grid indicate that the first three digits are in ascending or descending order (the highest digit is at the sharp end of the arrow). If there is no arrow outside the first three digits cannot be in either ascending or descending order.
Solution code: Row five, followed by column 5.
on 14. July 2022, 10:27 by Richard
Added link and tag for online solving. Thx Nick!
on 14. December 2020, 09:02 by Nick Smirnov
Penpa:
https://git.io/JLUIo
on 4. November 2016, 05:57 by Richard
@ohm0123: so far 36 players have rated this puzzle at 'very nice'. If you understand the logic of this type, it is not very hard; in this case it is very helpful to look at places without an arrow outside the grid to proceed.
on 4. November 2016, 02:50 by ohm0123
It's very hard. It's not nice at all.
on 30. October 2016, 04:49 by Richard
@Sunhokim8: In your solution there are multiple places where the first three cells are in- or decreasing while there is no Arrow outside the grid. This is not allowed.
on 4. February 2015, 05:19 by RALehrer
Cool - thanks!
on 3. February 2015, 22:10 by pin7guin
@RALehrer: Read here:
http://forum.logic-masters.de/showthread.php?tid=1304
on 3. February 2015, 09:38 by Richard
Typo fixed in English version