Musing about chess.

where the king moves determines the next set of moves.

if he moves to D7 you have problems.

for instance you move to Q C1-horse takes pawn, K to d1 horse takes rook then Q takes Q. then K takes Q.

however if

if Blck K moves to F7 -- you move to C3
he B to D8 then you Q to Blck Knight.

Worse case.
If you move R to c1 then he K to c2 then you R to C2 and he Q to c2
If he moves K to D8 I take Bishop for check he moves pawn I take horse.