Video Chess is a video game released by Atari in 1979 for the Atari 2600, based on the rules of chess. The game was developed by Larry Wagner (AI) and Bob Whitehead. The box art of the first production run of the Atari Video Computer System (or VCS, later known as the Atari 2600) featured a chess piece, even though Atari at the time was not contemplating designing a chess game. A man from Florida supposedly sued Atari over the box art; however, in an interview, Video Chess programmer Bob Whitehead said he was not aware of such a lawsuit.
At first, the idea of chess on the Atari 2600 was considered to be impossible due to the limitations of the technology at the time. For example, Atari had to overcome sprite limitations; the Atari 2600 was only capable of displaying three sprites in a row, or six (such as in Space Invaders) with the right programming. The eight-piece-wide standard chess board exceeded this limitation. To rectify this, Bob Whitehead developed a technique known as 'Venetian blinds' where the position of each sprite changes every scan line; this allows for eight or more sprites in a row. Additionally, the concept of bank switching ROMs was invented for earlier prototypes of Video Chess that were larger than four kilobytes in size, however the released version ended up fitting the standard 4K size.
The game is played from an overhead perspective. The player uses an 'x' cursor to select and move pieces, rather than using chess notation. If an attempted move is illegal, a warning sound is made and the move is not made. If the right-most switch is set to A the computer plays as white; setting it to B lets the player play as white. With the left switch, selecting A allows the board to be set as the player pleases, whereas selecting B sets up the board for a regulation chess game.
There are eight different difficulty levels, with the computer-player taking a variable amount of time to determine its moves for each level. The approximate time length ranges between ten seconds (level 8, for beginners) to ten hours (level 7).
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You can control this game easily by using the keyboard of your PC (see the table next to the game). However, for maximum gaming enjoyment, we strongly recommend using a USB joystick that you simply plug into the USB port of your computer. If you do not have a joystick, buy a suitable USB controller in Amazon or in some of your favorite online stores.