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Pocket Fritz, which is at version 4, is a chess playing program for Pocket PC personal digital assistants (PDAs). Pocket Fritz 4 uses HIARCS as the chess engine. Pocket Fritz 2 used a port of the Shredder chess engine.
Since the popularity of the PDA came about in the 1990s, some chess programs have been written for the portable market. This has also been in response to the increased popularity of chess in recent years The web page for Pocket Fritz 2 states that the program can connect to the Chessbase server to search for the current board position in more than 2 million games on the server. This is no longer true, as that functionality was broken in early 2006 by changes on the Chessbase server. According to Chessbase a high priority to fix, as was detailed in an email to Dr. David Kirkby part of which is shown on one of the chess newsgroups.
Pocket Fritz 4 (2009)
The Pocket Fritz 4 won the Copa Mercosur tournament in Buenos Aires, Argentina with nine wins and one draw on August 4–14, 2009. The 2009 Copa Mercosur tournament was a category 6 tournament. The Pocket Fritz 4 achieved a performance rating 2898. It uses chess engine HIARCS 13. The Pocket Fritz 4 was running on the mobile phone HTC Touch HD. Pocket Fritz 4 searches fewer than 20,000 positions per second.