Restrict queen mobility to safe squares

Passed both STC
LLR: 2.95 (-2.94,2.94) [-1.50,4.50]
Total: 16188 W: 3119 L: 2971 D: 10098

and LTC
LLR: 2.95 (-2.94,2.94) [0.00,6.00]
Total: 6336 W: 1010 L: 882 D: 4444

bench: 7533692
Merge branch 'master' into low_mob