Any situation or game that does not end in a draw or stalemate.
For example, a hunter kills a wolf and it's a win for the hunter but a loss for the wolf's pack. Another example is that if an argument is settled unfairly is in one side's favor only, for instance a border dispute between two countries. There are other types of situations like win-lose situations.
A win win situation is one in which neither party really loses. You might not be the grand prize winner but you still get a prize. Kind of like if you enter into a contest that has 3 winners and there are only 3 entrants. All 3 people will win some type of prize so in that situation it is a win win for all parties involved.
OK like if you play a game and some one loses but you win than you say you both won.
You win physically but lose mentally