I'll take the 4th glass and pour the wine into the first.This way we'll have-wine-empty-wine-empty-wine-empty.
i saw this somewhere else and decided to draw it and stuff:
Here are six cups. Three of them are empty, three have wine in them. Your goal is to make the line of cups alternate (wine-empty-wine-empty or empty-wine-empty-etc). You can only touch one cup and that is the cup you move. You may not move any other cups with or without your hand except if you are pushing the cup you chose to move between two other cups. How do you do it?Spoiler for Solution