int depth_btm (TFastNode * node, int ply, int depth, int move, bool check, int legals)
{
if (legals==1 && !_CAPTURE(move)) {
return depth-1;
}
if (check) {
return depth-1;
}
if (PIECE(move)==PAWN) {
if (TARGETSQ (move) <= h2) {
if (TARGETSQ(move)>=a2) {
return depth-1;
}
if (SPECIALCASE(move)==_QUEEN_PROMOTION) {
return depth-1;
}
} else if (TARGETSQ (move) <= h3 && node->wpieces<2 &&\
passed_bpawn (node, TARGETSQ (move))) {
return depth-1;
}
}
if (g.nullmate[ply-1]) {
return depth-1;
}
if (_CAPTURE (move) && TARGETSQ(move)==TARGETSQ(g.path[ply-2]) &&\
piece_val[CAPTURED(move)]==piece_val[CAPTURED(g.path[ply-2])] &&\
profcap_b (node, move)) {
return depth-1;
}
if (q_mates_K (node)) {
return depth-1;
}
return depth-10;
}
static void addcapturemove(const S_BOARD *pos,int move, S_MOVELIST *list)
{
ASSERT(sqonboard(FROMSQ(move)));
ASSERT(sqonboard(TOSQ(move)));
ASSERT(piecevalid(CAPTURED(move)));
list->moves[list->count].move = move;
list->moves[list->count].score = MvvLvaScores[CAPTURED(move)][pos->pieces[FROMSQ(move)]]+1000000;
list->count++;
}
static void AddCaptureMove(const CHESS_BOARD *pos, int move, MOVELIST *list) {
ASSERT(SqOnBoard(FROMSQ(move)));
ASSERT(SqOnBoard(TOSQ(move)));
ASSERT(PieceValid(CAPTURED(move)));
ASSERT(CheckBoard(pos));
list->moves[list->count].move = move;
list->moves[list->count].score = MvvLvaScores[CAPTURED(move)][pos->pieces[FROMSQ(move)]] + 1000000;
list->count++;
}
static void AddCaptureMove(const S_BOARD *pos, int move, S_MOVELIST *list) {
list->moves[list->count].move = move;
list->moves[list->count].score = MvvLvaScores[CAPTURED(move)][pos->pieces[FROMSQ(move)]] + 1000000;
list->count++;
}
