- VALUE_TYPE_EXACT = 3, // Exact score
- VALUE_TYPE_EVAL = 4, // Static evaluation value
- VALUE_TYPE_NULL = 8, // Null search value
-
- VALUE_TYPE_EV_UP = VALUE_TYPE_EVAL | VALUE_TYPE_UPPER,
- VALUE_TYPE_EV_LO = VALUE_TYPE_EVAL | VALUE_TYPE_LOWER,
- VALUE_TYPE_NS_LO = VALUE_TYPE_NULL | VALUE_TYPE_LOWER