http://www.jeremyglassenberg.com/StrategyChess.gg

Updates:

*    Added different difficulty levels for Single Player Mode (easy,
medium, hard, and brutal).  The more difficult levels can actually put
up a good fight!

*    Improved the computer player's strategy for all difficulty levels

*    Fixed a minor issue in Multi Player Mode, for users who have a
long list of buddies on GoogleTalk.  Now, there is a scroll feature so
that you can go through your entire list of online friends, instead of
just a select few.

Let me know if you find any issues with the latest version, especially
multiplayer mode.

Also, when working on the computer player, I noticed it was making
exceptionally bad moves in my previous versions.  This was actually due
to a mistake in my code that, although not harming the program, caused
the computer player to make some very bad moves.  If, with the new
version, you notice the computer player doing something that you find
incredibly "stupid", please let me know, as I am still working on
improving the way it thinks (heads up, it will make plenty of "stupid"
moves in Easy Mode, as the computer is intended to be very forgetful in
that mode).