Unbeatable Tic-Tac-Toe

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

Warning: DOMDocument::load(): Specification mandates value for attribute x in /usr/local/www/apache24/data/tictactoe/games.xml, line: 23487 in /usr/local/www/apache24/data/tictactoe/index.php on line 36

Warning: DOMDocument::load(): attributes construct error in /usr/local/www/apache24/data/tictactoe/games.xml, line: 23487 in /usr/local/www/apache24/data/tictactoe/index.php on line 36

Warning: DOMDocument::load(): Couldn't find end of Start Tag game line 23487 in /usr/local/www/apache24/data/tictactoe/games.xml, line: 23487 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: 23487 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('t3792', 'moves', '__X_OO__X') #1 /usr/local/www/apache24/data/tictactoe/index.php(334): generate('__X_OO__X', 't3792') #2 {main} thrown in /usr/local/www/apache24/data/tictactoe/index.php on line 38