- TT.store(posKey, nullValue, VALUE_TYPE_NS_LO, depth, MOVE_NONE);
+ // Special flag null values that are not zugzwang checked
+ ValueType vt = (depth < 6 * OnePly ? VALUE_TYPE_NS_LO : VALUE_TYPE_LOWER);
+ TT.store(posKey, nullValue, vt, depth, MOVE_NONE);