Thanks for the update. It's definitely gotten a lot more interesting in the last couple of moves.
Deep Fritz 13 vs. Houdini - It's On!

I agree - this is getting good. Sure, if I manage to beat Deep Fritz I will play Critter next.
I let Houdini crunch for 2 days straight. When I checked it was expecting 15.h4 and wanted to play ...d4. It seemed to roughly think 15.0-0-0 was about the same evaluation, and was somewhat unstable between the two.
I think it wanted to play ...d4 in response to 0-0-0 also, but I'm at work and I will make sure before I play when I get home tonight.
Interesting, Deep is not expecting the d4 after the long castle. The engines have definitely diverged.
h4 was Deep Fritz's other choice for a move, but using deeper analysis, it selected 0-0-0. It is quite apparent that Houdini is winning.

Can we see the postion upadted every couple of moves, with pgn, and computer thoughts in a single post?

I'm not a big fan of the Bb5 move. Black should play 16...Ne7, after which I see two main lines here:
17. Nxd5 Nxd5 18. Qxd5 Qf6 and White is looking less and less safe.
or
17. c6 a6 and the bishop needs to find another good square. The c pawn will fall, and Black will take the c file pointing right against White's position.

I'd wondering how Houdini would do against stockfish.
Here's a themed opening game, houdini 1.5 vs stockfish 2
http://www.chess.com/forum/view/chess-openings/steinitz-scotch-what-the-engines-say

Where do you buy Houdini?
I thought there was only Houdini 1.5
On the site, there isn't a mention of Houdini 2 or 3.

Well, with the opposite-coloured bishops and no easy way for Black to activate one of his rooks, I still bet on a draw
I'd like to challenge the winner to a game against Critter, if you're up to it.
Sounds great.
In the current game, I castled Queenside. Here's the new main line and variations, as Deep Fritz sees them: