The right button underneath the chessboard steps through the puzzler's solution for you to check your findings. The left button steps back. Click on square D8 for more details about today's puzzler.
Please notice how the chess puzzler can appear within a post (like this one) or as a blogger sidebar gadget or anywhere within the blog template, like in the top right corner of this blog.
The chess puzzler is featured on the pgn4web homepage, please note how size and colors can be customized.
This applet can be easily added to your website or your blog, either natively or pre-packaged as google gadget for your iGoogle page or your google sites based website. Check the instructions at the chess puzzler page of the pgn4web wiki.