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Play against Computer	Chess Puzzles
Test you chess skills and challenge one of the strongest chess playing programs in the world! You have three levels of difficulty to select from and it’s possible to change the appearance of your chess pieces. Click New Game to choose the colour of your pieces - White or Black. To enter a move you should click on a piece and drag it to the desired square.	Do you enjoy solving chess puzzles? We invite you to test your chess skill for free on our online chess puzzles! There are 1200 chess puzzles for different levels, from beginners to intermediate players.

ChessOK Playing Zone - Play Chess Online for Free

• Games with different time controls, including freestyle
• Free tournaments with prize money
• Free online broadcasts of the super tournaments and the best matches
• Opportunity to create a team and to participate in team tournaments
• Online technical support and refereeing
• Unique system Anti-Computer Control
• Online game database and computer analysis
• Training lectures made by experienced trainers
• Regular updates

Dedicated Gaming Client	Directly on Site
Download the progam To start the game you have to download the client, install it on your computer and register new account on the server. Warning: if you are installing under Windows Vista, you should read about Vista error or install client in a folder other than default (Program Files). If you are a beginner, it will be useful for you to watch introductional video help.	Proceed to play Requires Adobe Flash Player to be installed. Simply register new account on the server and start playing. Beware, most of the Playing Zone services are available only in dedicated gaming client.

Opening Tree Mode

Free Chess Games in PGN

The Opening Tree mode from our chess bestseller – Chess assistant - is now available online! You can now receive detailed statistics on all opening moves carefully classified and stored in our opening database. You can copy the moves in the PGN line above the statistics table and it’ll be a full PGN file that can be inserted into any chess program. You can also change the appearance of your chess pieces or flip the chess board. A Takeback function allowing you to go one move back is also available.

ChessOK provides free weekly chess databases containing 2000-3000 new games in PGN format. Save file on your computer, unpack, and then open and analyze it in your favorite chess program (we recommend our Rybka 3 Aquarium and Chess Assistant 10).

Endgame Nalimov Tablebases

Online access to all 3-4-5-6 Nalimov Tablebases Here you can receive evaluations and variants for all 4-5-6 piece endings with 100% probability! Just drag & drop pieces to the chess board to make a necessary position and click Evaluate. Pay special attention to the fact that you can’t place more than 6 chess pieces on the chess board at once! You can change the appearance of your chess pieces and drag them to another square on the board to change the initial position. To select the colour of your pieces click Switch turn. If you want to remove a piece from the chess board, just click a cross sign on it.

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