Father and daughter river crossing puzzle. There are 3 men and 3 girls. lets name them ABC, A's daughter X, B's Daughter Y, C's daughter Z.
Rule to cross the river:


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*At once Only two Can go on boat.

*Only Men know how to drive the boat (So there has to be atleast one man on boat)

*No girl crosses river with strange man, (that means, only father can take a girl on boat)

*No girl stays with strange men on shore, (that means, father should not leave his daughter with other men, either she should be alone, or with other girls or with her father)


How do they cross river?

*

*A and X cross the river, X stays, A rows back

*B and Y cross the river, Y stays, B rows back

*A and B cross the river, A stays, B and Y row back

*B and C cross the river, B stays, C rows back

*C and Z cross the river, both stay, B rows back

*B and Y cross the river.

