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→Game Options
''Game Over'' - When the game is over, the status is shown (checkmate, draw, etc.), the number of times back up was used is displayed, and the option is given to press '''ENTER''' for a new game. If you would like to see an action replay of the game, press REPLAY ('''SHIFT A'''). You can also record your game on a cassette tape at this point using the STORE ('''SHIFT X''') option.
====Person vs. Person====
Two people can use the Video Chess module simply as a chess set and board for playing a game between themselves. When this option is chosen, the computer will set the clocks at zero and start White's clock running. When White enters a move, the white clock stops and the black one starts, and vice versa. Play will then follow all normal rules with the computer moving the pieces, checking for legal moves, etc., until game completion. If during the game, one player needs to leave the game, play can continue by pressing '''SHIFT M''' and turning over one of the positions to the computer.
====Setting up a Problem====
Sometimes you will wish to set up a special position, other than the normal starting position. This might be because you wish to start from a particular position, or because you wish to resume an unfinished game that began some time back, or because you want the computer to try to solve a chess problem such as those found in the chess column of your newspaper.
Special positions are entered with the help of prompting messages on the screen after you choose this option. For each piece in the special position it is necessary to supply three items of information: its color, the type of
piece and the square it is on. Suppose that you wish to put a white bishop on C6. The first choice that you see says ENTER COLOR OF PIECE. You then press '''1''', to signify White. You are then asked to ENTER PIECE, whereupon you press 3 for bishop. You are then asked on which square you wish this bishop to stand, by ENTER POSITION, and you respond with C6. The program places the white bishop on square C6 and returns you to the ENTER COLOR OF PIECE choice.
Once the position of all desired pieces has been set up and you are satisfied that it is correct, press '''4''' on the "Enter Color of Piece" screen to start. ''Note:'' The computer will not start until both kings are placed on the board and are not adjacent to each other. Also, the defending king cannot be in check.
If your setup includes a possible castling move, the program will ask you questions such as: IS CASTLING POSSIBLE?, WHITE 0 0, and you will respond with '''1''' or '''2''' for yes or no depending on whether the side in question has lost the right to castle in your special position.
After pressing '''4''' for '''START''', you are given these choices:
Press/For
# '''Mate in Two'''
The program will search for all moves that force checkmate in no more than two moves by the player whose turn it is to move. (See important note following.)
# '''Mate in Three'''
Same as Mate in Two but looks for checkmate in no more than three moves. (See important note following.)
# '''Play a Game'''
This option allows you to start and play the computer from this special starting position. You are also allowed to choose the level of difficulty.
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