Somebody knows how you can save the pic on your computer?
If you use a browser like Google Chrome, right click on the picture to start the slide show, then click on the picture again, then click "Inspect Element". In the dialog box that opens, look for "background image URL" on the left side and that will be the picture. Click on the text and find the isolated "background image URL" on the right side. Right click and open it up in a separate window that contains just the image URL such as the one below.