Large counters represent fathers and small counters represent mothers.
There is a Blue player who plays blue counters and a Red player who plays red counters. On her turn Red must seat a family. However Mothers and Fathers from different families cannot sit next to each other . Unfortuneately there is no way that Blue can seat his next family that will prevent Red from seating a further family and so winning the game. Note that neither player can seat a family in the row of three empty seats at the bottom left of the table without seating Mothers and Fathers from different families together.