We implicitly considered the minimum depth stored in TT
to be Depth(0), but because we store values in TT also in
qsearch() where depth is < 0, we need to use a negative
number as minimum depth.
Bug spotted by Joona Kiiski.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
for (int i = 0; pv[i] != MOVE_NONE; i++)
{
- store(p, VALUE_NONE, Depth(0), pv[i], VALUE_TYPE_NONE);
+ store(p, VALUE_NONE, Depth(-127*OnePly), pv[i], VALUE_TYPE_NONE);
p.do_move(pv[i], st);
}
}