This is definately the best 3d chess game currently available, and I have tried most of the popular ones. The pieces are detailed and easily recognizable, the online multiplayer works well (have played 4 online games so far), it just needs a few more players in the lobby. I have only played against the AI on the 2nd skill level (out of 6), as I am only a beginner at chess. It's not too difficult as to be frustrating (as some chess engines are), but still somewhat challenging as a way to improve. I am happy I saved $10 by buying the early release.
I recommend disabling the battle camera, setting it to windowed mode, increasing movement speed, disabling the post-processing filter, and adjusting the resolution. After playing many games, I prefer to have battle animations disabled, although an option for shorter, simpler animations would be very nice.
Please add me to friends if you want to play a game (since the lobby is often empty)
There are a few minor issues which will hopefully be fixed soon, none of which break the game however.