If I download Windows Puzzle, will I be bombarded with commercial ads and will other programs that I don't want be placed on my computer?
The answer is no, you won't be annoyed with commercial ads and anything related to. I have downloaded the application and installed it, and was able to launch it without any extra configuration. No ads popped on my screen while I was playing.
You can download it through the download page at Software Informer: http://magic-jigsaw.software.informer.com/download/