Simple game:
If the 12 ball is a cue ball “blank” (therefore neither smalls or big), than think of it as a blank space. Bigs are one set of stones, smalls another. This photo was posted after Trumps latest move of the immigration hold off, letting D have their turn(imagine this may be a simplified playing field). Where will they move their only possible stone (11)? Into the blank space, leaving a space between 1 and 2. Carry this through out, alternate small v big turns and see where you get. Will they get to a point where a small has the opportunity to jump over a big into the space, therefore taking it off the game board, or vice versa?? Always one blank space moving around the outside? Bit of a mind game. The hard part is when there are two free spaces.