Not possible
Embed PGN in my wordpress blog
Does anyone know of a way that I can embed an entire game into a wordpress blog so that the reader is able to play through it? I'm looking for somethign similar to what is possible on the USCF website.
Look at this plugin for wordpress.org (i.e. the wordpress software that you install on your site, not the free blog at wordpress.com):
http://wordpress.org/extend/plugins/embed-chessboard/
Demo:
http://pgn4web-test.casaschi.net/wordpress
Full insttruction here:
http://code.google.com/p/pgn4web/wiki/User_Notes_wordpress

Maybe you can’t put games on directly but you may be able to link to them using Chess Videos game replayer.

Not possible
Not correct. Post the game or diagram and then click the "Share" link to get the code which you can then cut-and-paste into your own web-page. Unfortunately, I don't think it works for puzzles for some reason.

Hmm, I don't and it's hard to say. There are restrictions based on a user's permissions to the blog itself, but I'm not sure if those restrictions are inherited by the diagrams therein.
I wouldn't be surprised if the diagrams all lived in a common unrestricted pool and that you wouldn't have any difficulty, but I can't say for certain whether this is the case.
Unfortunately, I do know that the puzzle diagrams simply don't have this capability. I did a little bit of investigation earlier with the intent of seeing if there was a workaround available by simply pasting the diagram ID into the embed code but I confirmed that it's not simply a case of the "Share" option not being presented. It seems that puzzles are defined right in the page source itself and call a generic puzzle diagram applet that interprets this to present the diagram.

You can use the RPB Chessboard plugin. After you install it, it will look like the chessboard in this post:
http://angrybishop.net/5-building-blocks-of-a-strong-chess-player/
Does anyone know of a way that I can embed an entire game into a wordpress blog so that the reader is able to play through it? I'm looking for somethign similar to what is possible on the USCF website.