// Ideas with 2 kings:
// Stage 1 {w, b} : 2 kings on board, value 5.
// Stage 2: only one, get mated and all that, value 1000
// Ideas with 2 kings:
// Stage 1 {w, b} : 2 kings on board, value 5.
// Stage 2: only one, get mated and all that, value 1000