Okay see mine was just a fun play on French, but I had to stop and think on yours.
So...he has to take the chicken over first, then go back for the grain and take that over. Then take the chicken back to the first side and leave it while he takes the wolf, and then go back again to get the chicken and then bring it over.
Honestly he should just tame the wolf, eat the chicken, and plant the grain, but that's just my opinion.