Why does it only move the horses?

I'm learning how to play chess by playing against the computer. That's my game:

http://www.flickr.com/photos/66727780@N0鈥?/a>



I pressed takeback and put my pawn back there several times, to see the range of moves the computer can do. Surprisingly, it only moved its horses to F3 and to C3. Why?Why does it only move the horses?
having a knight near the side of the board limits the next move it is capable of



place a knight at A3 or H3 and observe the possibilities

look at the possible moves from F3 or C3



in addition the game can be controlled or shaped using the centre 4 squares



the more firepower you can direct there the better you chances of controlling the gameWhy does it only move the horses?
Your chess playing programs generally do incomplete combinatoric searches of all possible moves, grading the various outcomes to decide which one is "best."



Depending on how it goes about this search, depth first, breadth first or whatever, how it prunes the tree of probability to save time, how it grades the moves, it's then going to play pretty consistently.



In other words, it isn't playing like a human at all. It's taking a brute force approach to the analysis, systematically appraising as many possible moves as it can, and sticking strictly to the results of its search. It thinks those are the best moves.Why does it only move the horses?
Why in God's name is this question in the MILITARY section?