Galileu was invented by Finnish mathematician Arto Inkala. It’s a challenge rated 11 on a scale of 1 to 5…
Why is he so difficult? Because there are a large number of candidates per cell, which makes it difficult to solve.
Try to solve it by going back over the techniques and seeing which ones are applicable, it’s a good way to fix the given content on the site.
On the next page is one of the possible solutions, but don’t go there until you’ve really tried to solve it. If you can, get in touch using the contact form and you will be advised how to send us the solution found.
Good luck and good studies.