Your goal is to bring the wolf, the sheep, and the head of cabbage to the left side of the river in the man's boat. 

Click the wolf, sheep or cabbage on the shore to add it to the man's boat, and click on the boat to move it across the river. Click the wolf, sheep, or cabbage in the boat to put them on the shore. Watch out! The wolf will eat the sheep when left alone and the sheep will eat the cabbage when left alone.