Unbeatable Tic-Tac-Toe

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

Warning: DOMDocument::load(): expected '>' in /usr/local/www/apache24/data/tictactoe/games.xml, line: 13246 in /usr/local/www/apache24/data/tictactoe/index.php on line 36

Warning: DOMDocument::load(): Opening and ending tag mismatch: game line 13243 and unparsable in /usr/local/www/apache24/data/tictactoe/games.xml, line: 13246 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: 13246 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('t7669', 'moves', 'OXX_O____') #1 /usr/local/www/apache24/data/tictactoe/index.php(334): generate('OXX_O____', 't7669') #2 {main} thrown in /usr/local/www/apache24/data/tictactoe/index.php on line 38