The New Sudoku Players' Forum

[Fonzarelle]

I am stuck here without taking a guess. Is there a strategy I can apply here? I'm quite sure I tried to post this url wrong.

https://pasteboard.co/Kg3sLho.png

[jco]

Hi Fonzarelle,

There is a skyscraper on the digit 2.

[Fonzarelle]

Thank you so much jco. I googled skyscraper but are there any tips you can suggest to notice them?

[SteveG48]

Look for any strong links on the digit you're investigating. Whenever there are two or more, check carefully for kites and skyscrapers.

[jco]

Hi Fonzarelle,

Thank you so much jco. I googled skyscraper but are there any tips you can suggest to notice them?

Sorry for the late response. SteveG48 gave you already the key. You can also look at the link
on keith's trick. Colouring is also an interesting tool (see also here).

[Vorlauf]

In addition to the skyscraper on digit 2, that others have mentioned, there is a Type 2 Unique Rectangle on digits 8,6 in rows 1-2. This leads to immediate placement of digit 6 in R9C7 as well as elimination of candidate 6 from R1C8 and R2C9.