The "one player" option could use a "beginner" setting below the current "easy" setting. I am a complete novice, and even the "easy" setting has been very frustrating and discouraging for me.
The game works well--no flaws, good graphics, makes clear the options. If you already have some chess ability, I'm sure it's great.
I might keep trying a little longer, but constantly getting pummeled by the so-called easy opponent isn't as much fun for me as playing against another beginner would be.
However, I do want to acknowledge that the game seems well designed in general. It allows for one- or two-player play at more than one level; it looks and sounds nice; and the limitations on moves are clearly communicated.