Interesting...
Now, Chess Titans. One good thing about it, it comes free...unlocked and loaded (to paraphrase one of our gun terms)...with pcs.
I know you do more research than anyone I've ever known (except maybe Larry Evans). Here, bet you haven't seen this trick. I learned it back in the early fifties...it was a gem (and a caveat for the unsuspecting) in just about every chess book in that day.
This Chess Titans is the best. Even at level one:
http://www.youtube.com/watch?v=0UhyyfB4WG8
Hint: We called it F___'_ M___
P.S.: Don't "let on" that I showed you this.
Chess Titans has failed to garner positive reviews, AFAIK, from chess players familiar with chess software.
The OP likes his Kindle. I like my iPad. My nephew likes his Android. Some apps run on all these platforms.
Redbirdy is correct that the choice of which device is a personal matter that involves weighing the features of each against one's own needs. He fails, however, to recognize irony and demonstrates his lack of familiarity of the culture of Apple users. See http://www.cultofmac.com/.
My wife and I drank the Kool-Aid last summer and bought two iPads (now these are obsolete), and I've used mine daily. One glass leads to another, and she's getting the Air this week.
Redbirdy can post where he wants, but as long as members (paying or not) attack and then block those of us that do play chess here, I will advocate efforts to limit at least some discussions to chess players. In http://www.chess.com/forum/view/general/human-vs-computers, Redbirdy displayed no ill manners. In this thread, he did.