Single Comment

Below is how the GAME code generated for the Pre-Game would have to look for orthodox Chess. This assumes 'smart' generation, which realizes that most pieces are symmetric, so that white and black can use the same table entries for those, and that the Bishop is just the final part of the Queen. Most likely it would be too dumb to see the latter, and then a separate Bishop section would be added. If the pieces were asymmetric, or it was not smart enough to realize they are symmetric, all pieces sections would have to appear in duplicat: one for white, one for black.

include betza.txt
set legdefs
 1  1  0  1  3 // King (0)
 1  1  0 -1  3 // 3 = m_FLAG + c_FLAG
 1  1  1  0  3
 1  1 -1  0  3
 1  1  1  1  3
 1  1  1 -1  3
 1  1 -1  1  3
 1  1 -1 -1  3
 2  9  1  0  8 // castling (40)
    1  2  0  3
 2  9 -1  0  8
    1 -2  0  3
 0
 1  9  0  1  3 // Queen (59)
 1  9  0 -1  3
 1  9  1  0  3
 1  9 -1  0  3
 1  9  1  1  3 // Bishop (79)
 1  9  1 -1  3
 1  9 -1  1  3
 1  9 -1 -1  3
 0
 1  9  0  1  3 // Rook (100)
 1  9  0 -1  3
 1  9  1  0  3
 1  9 -1  0  3
 0
 1  1  2  1  3 // Knight (121)
 1  1  2 -1  3
 1  1  1  2  3
 1  1 -1  2  3
 1  1 -2  1  3
 1  1 -2 -1  3
 1  1  1 -2  3
 1  1 -1 -2  3
 0
 1  1  0  1  1 // white Pawn (162), 1 = m_FLAG
 1  1  1  1  2 // 2 = c_FLAG
 1  1 -1  1  2
 1  1  1  1  4 // e.p. capture (177), 4 = e_FLAG
 1  1 -1  1  4
 2  1  0  1 577 // double push, 577 = m_FLAG + i_FLAG + rights creation
    1  0  1  1
 0
 1  1  0 -1  1 // black Pawn (197)
 1  1  1 -1  2
 1  1 -1 -1  2
 1  1  1 -1  4 // e.p. capture (212)
 1  1 -1 -1  4
 2  1  0 -1 577
    1  0 -1  1
 0;

def K cond #0   0 40;
def k cond #0   0 40;
def Q cond #0  59 58; // 58 = empty move set
def q cond #0  59 58;
def R cond #0 100 58;
def r cond #0 100 58;
def B cond #0  79 58;
def b cond #0  79 58;
def N cond #0 121 58;
def n cond #0 121 58;
def P cond #0 162 177;
def p cond #0 197 212;

set pzs 1;             // promo zone depth
set rooks a1 a8 h1 h8; // castling partners
set wchoice (Q R B N);
set bchoice (q r b n);
set stalemate 1;
set wroyal K;
set broyal k;