If the Hanshin Tigers win all 10 games remaining on their schedule (including 2 against the Yomiuri Giants at Koshien Stadium), they'll win the CL.
If the Yomiuri Giants win all 8 games remaining on their schedule (including 2 against the Hanshin Tigers a Koshien Stadium), and the Dragons win no more than 2 games, they'll win the CL.
If the Chunichi Dragons win all 3 games remaining on their schedule, and the Giants win all 8 of their remaining games, then regardless of what the Tigers do, the Dragons will win the CL. Other than that, the Tigers can do no better than 9 wins in order for the Dragons to win the CL.
And the Yokohama Bay Stars are basically one loss away from guaranteeing themselves a last place finish.