+ 69 * kingAttacksCount[Them]
+ 185 * popcount(kingRing[Us] & weak)
+ 150 * popcount(pos.blockers_for_king(Us) | unsafeChecks)
- + 4 * tropism
+ + tropism * tropism / 4
- 873 * !pos.count<QUEEN>(Them)
- 6 * mg_value(score) / 8
+ mg_value(mobility[Them] - mobility[Us])