Re-enable endgame code for large-board version

Re-enable endgame code for large-board version

chess STC
LLR: 2.96 (-2.94,2.94) [-10.00,5.00]
Total: 1221 W: 291 L: 253 D: 677
http://35.161.250.236:6543/tests/view/5d43fddc6e23db34f4206d2f

chess LTC
LLR: 3.00 (-2.94,2.94) [-10.00,5.00]
Total: 924 W: 174 L: 136 D: 614
http://35.161.250.236:6543/tests/view/5d44270a6e23db34f4206d36

capablanca STC
LLR: 2.98 (-2.94,2.94) [-10.00,5.00]
Total: 3460 W: 1367 L: 1334 D: 759
http://35.161.250.236:6543/tests/view/5d43fdfc6e23db34f4206d32

capablanca LTC
LLR: 2.95 (-2.94,2.94) [-10.00,5.00]
Total: 2306 W: 879 L: 840 D: 587
http://35.161.250.236:6543/tests/view/5d4426ff6e23db34f4206d34