rules of conduct of the cube, tricky internal blocks:
1) while turning the faces - cube with goat can't go past dice with cabbage
1) while turning the faces - cube with the wolf cannot go past the goat cubes
otherwise they are pleased with their kill ;) you are performing the role of a farmer who must not let this happen!
Cube is made based on a famous Russian puzzle with centuries of history: "the Wolf, goat, and cabbage"
puzzles are very simple rules: “A farmer is to ferry across a river a goat, a cabbage, and a wolf. Besides the farmer himself, the boat allows him to carry only one of them at a time. Without supervision, the goat will gobble the cabbage whereas the wolf will not hesitate to feast on the goat.”
You can play online: http://www.cut-the-knot.org/ctk/GoatCabbageWolf.shtml
You can also download a very beautiful game - Ferryman, there are many levels and additional characters: http://www.gamershell.com/pc/the_ferryman/