🚀 go-pugleaf

Hi!

First of all few words about my goal. I'm trying to develop stateless 
chess engine, that is, a routine which tells the next move on the chess 
board, depending on the current state of the game, passed as an argument. 
In other words, I'm trying to develop routine like this:

Move getNextMove( GameState state );

GNU Chess project is perfect for my needs (because it is an open source 
project :) and I plan to refactor its code to get one routine, as shown 
above. But I'm not sure, which variables hold the game state, and which of 
them can be reinitialized at the begining of each call. As I read on the 
net and inspect the code, the gnu chess algorithm is generaly stateless 
and it depends on relatively small amount of variables. I figured out, 
that game state should contain this variables: board, Game, GameCnt, 
Game50, nmovesfrombook, cboard, ExchCnt. But maybe it's not enough?

Can anybody help me, there are more variables, especially used for scoring 
and hashing?

Thanx in advance.
Marcin