{"id":865,"date":"2020-04-16T07:05:45","date_gmt":"2020-04-16T14:05:45","guid":{"rendered":"http:\/\/theothermath.com\/?p=865"},"modified":"2023-11-14T17:13:31","modified_gmt":"2023-11-15T01:13:31","slug":"ultimate-tic-tac-toe","status":"publish","type":"post","link":"https:\/\/theothermath.com\/index.php\/2020\/04\/16\/ultimate-tic-tac-toe\/","title":{"rendered":"Ultimate Tic Tac Toe"},"content":{"rendered":"

Ultimate tic-tac-toe is a board game composed of nine tic-tac-toe boards arranged in a 3 \u00d7 3 grid. Players take turns playing in the smaller tic-tac-toe boards until one of them wins in the larger tic-tac-toe board. Compared to traditional tic-tac-toe, strategy in this game is conceptually more difficult and has proven more challenging for computers.<\/span><\/p>\n

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Rules<\/span><\/h2>\n

Each small 3 \u00d7 3 tic-tac-toe board is referred to as a local board, and the larger 3 \u00d7 3 board is referred to as the global board.<\/span><\/p>\n

The game starts with X playing wherever they want in any of the 81 empty spots. This move “sends” their opponent to its relative location. For example, if X played in the top right square of their local board, then O needs to play next in the local board at the top right of the global board. O can then play in any one of the nine available spots in that local board, each move sending X to a different local board.<\/span><\/p>\n

If a move is played so that it is to win a local board by the rules of normal tic-tac-toe, then the entire local board is marked as a victory for the player in the global board.<\/span><\/p>\n

Once a local board is won by a player or it is filled completely, no more moves may be played in that board. If a player is sent to such a board, then that player may play on any other board.<\/span><\/p>\n

Game play ends when either a player wins the global board or there are no legal moves remaining, in which case the game is a draw.<\/span><\/p>\n

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