/* && ttValue != VALUE_NONE Already implicit in the next condition */
&& abs(ttValue) < VALUE_KNOWN_WIN
&& (tte->bound() & BOUND_LOWER)
- && tte->depth() >= depth - 3
- && pos.legal(move))
+ && tte->depth() >= depth - 3)
{
Value singularBeta = ttValue - ((formerPv + 4) * depth) / 2;
Depth singularDepth = (depth - 1 + 3 * formerPv) / 2;
// Castling extension
if (type_of(move) == CASTLING)
extension = 1;
-
+
// Late irreversible move extension
if ( move == ttMove
&& pos.rule50_count() > 80