simple take the chicken across first, then go back for the grain, when you get back to the side with the chicken you leave the grain and take the chicken back to the side with the wolf, then you leave the chicken and take the wolf across, before making a final trip to get the chicken...i think i've done this problem to many times
>you bring the chicken across first
>then you go back get the wolf
>grab the chicken go back to the other side
keep the chicken on the other side
take the grain across
go back and get the chicken
-but how could you even have all 3 with each other in the first place