Unbeatable Tic-Tac-Toe

New Game
Make Your Move
Select Select X
Select O Select
Select X O

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Warning: DOMDocument::load(): Opening and ending tag mismatch: game line 11043 and ga in /usr/local/www/apache24/data/tictactoe/games.xml, line: 11046 in /usr/local/www/apache24/data/tictactoe/index.php on line 36

Warning: DOMDocument::load(): Premature end of data in tag tictactoe line 2 in /usr/local/www/apache24/data/tictactoe/games.xml, line: 11046 in /usr/local/www/apache24/data/tictactoe/index.php on line 36

Fatal error: Uncaught Error: Call to a member function getElementsByTagName() on null in /usr/local/www/apache24/data/tictactoe/index.php:38 Stack trace: #0 /usr/local/www/apache24/data/tictactoe/index.php(113): update_element('t9556', 'moves', '__X_O__XO') #1 /usr/local/www/apache24/data/tictactoe/index.php(334): generate('__X_O__XO', 't9556') #2 {main} thrown in /usr/local/www/apache24/data/tictactoe/index.php on line 38