A challenge for me - thanks.

Very good!

I found it very challenging and the image very appealing.

Wonderful image, thank you.

Perfect.

Thanks.

An amazing image!

Not able to complete logically.

Excellent imagine and fully logical.

Trudiehorse - The puzzle is still logical even if temporaries are necessary!
Try playing around with the "8" in column 8 if you are struggling.

Thanks, a nice image. 100% logical. No need to use temporaries.

Deathgrips: If you need temporaries to solve a puzzle, then it is not logical. If you don't, it is logical. This puzzle is logical using 2D logic. Also, no need to play around with the "8" that you mention. The 2D logic required to solve it is based on the whereabouts of the 4 in row 1. No need to guess/use temporaries.

A bit of a challenge but nice image!

Completely logical. I didn't need temporaries. Just careful thought. :)
Awesome picture!

@Robaharrison I'm not sure what "2D logic" means and googling it didn't help me out either, is there an alternate term for what you are describing?

Great image, thank you.

Very good. Thanks.

Lovely image and I also found it a challenge but fun. :):)