You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "what is it called when no one wins at tic tac toe?" whose answer is cat's game.
Each document should contain about 30 words, and these documents should contain useful information.

Query: what is it called when no one wins at tic tac toe
Useful Output:

Doc 1: Remember, this game is known as a 'solved game', which means that there is a definite strategy that can be employed to win every single time.
Doc 2: ⑤ When someone wins, highlight the three squares that caused the win. ⑥ When no one wins, display a message about the result being a draw.
Doc 3: Although simple, Tic-Tac-Toe is known as a "zero sum game" since its impossible for two informed players to win a game; the ideal strategy
Doc 4: Cats scratch. Tic Tac Toe ties are called cats game because no matter how hard a cat tries to win against its tale it never wins and yet has fun.
Doc 5: Comes from the concept that a cat cannot catch its own tail just like a player in tic-tac-toe cannot win a game that is already tied.