Use the Keyboard Controllers with this Game Program.  These controllers must be purchased separately.  Be sure to plug the controller cables firmly into the Video Computer System jacks.  For one-player games use the left hand controller.
 

HOW TO PLAY

The computer or another player has created the secret code, and your mission is to guess the code.  The code's identity is affect by:
* The number of digits. Games feature codes with 3 or 4 digits.
* The number span.  Games feature codes with numbers from 1 to 9, or 1 to 6.
You have 12 (or 8) guesses to identify the secret code with the Keyboard Controller.  Use the controller to enter the number digits of your guess onto the screen.  The computer will then analyze each number digit of your code guess.
 

CODEBREAKER GLOSSARY

Left hand score:  During CODEBREAKER games the upper left number refers to the number of guesses players have made during the present game.  At the end of the game, the left controller player's score appears in this position.

Right hand score:  In one-plyaer CODEBREAKER games, this number appears throughout the game to show the number of consecutive games of CODEBREAKER you've played.

In two-player games, this number refers to the right controller player's score.

Computer secret code:  The secret code will appear above the list of player guesses at the end of the game.

Player Guess:  The number code guess you enter into the computer appears on the left side of the screen.

Computer Symbols:  After you register your player guess with the computer, the computer will respond with symbols that analyze your guess.
* Black Line:  Signifies that one of the number digits is the correct identity and in the correct position.
* White Line:  Signifies that one of the number digits is the correct identity but in the incorrect position.

Cursor:  This flashing square appears in the position of the next number entry into the computer.

Player Indicators:  In two-player games, the color of the line and its position indicate whose Keyboard Controller must register the next guess.  A white line appears on the far right of the playfield, meaning the right controller player must enter a guess.  A black line appears to the left of this position during the left controller player's turn.
 

1-Player Codebreaker Games

The computer selects the secret number code.  You have 12 guesses to identify the code.  Your number of guesses equal your point score.  For example, if you guess the secret code at the fourth guess, you score four points.

2-Player Codebreaker Games

There are 2 ways for 2 players to play Codebreaker:

1.  The computer selects the secret number code.  You and your opponent take turns making guesses.  In the first game of a series of consecutive games, the right controller player always makes the first guess.  The first player to match the secret number code scores 1 point and starts the next game.

2.  The player creates the secret number code using the Keyboard Controller.  The opponent then tries to guess the secret code in the least number of guesses.  When the opponent guesses the secret code, his score is equal to the number of guesses.  For example, a player scores 4 points when he guesses the secret code on the fourth guess.  During the next game, the roles are reversed and the player who tried to guess the code becomes the player who creates the secret code.

NOTE:  Only the player who is guessing the secret code has a chance to score points.  When playing a series of consecutive games, begin the first game with the left controller player who tries to guess the secret code.
 

CODEBREAKER SCORING

1-player Codebreaker

A player's score during 1 game is determined by the number of guesses needed to identify the secret number code. For example, if a player guesses the code on the sixth guess, the score is 6.  Your object is to score the lowest possibly score.  Your cumulative score appears in the upper left corner of the screen at the end of the game.

Hint:  In 1-player games, divide your socre by the number of  consecutive games for an average score.

2-player Codebreaker:  When the computer selects the secret code for both players to guess, the player scores 1 point when he guesses the code.  When one player creates the secret code, the object is to score the least number of points.  for example, if a player guesses the secret code on the fourth guess, he scores four points.
 

USING THE KEYBOARD

1-player Codebreaker:
Use the left Keyboard Controller to play 1-player Codebreaker games.  To make a guess, press the number digits on the Keyboard.  The press the enter (#) button.  The digits you have entered will appear on the left side of the screen.  The computer will then analyze your guess with computer symbols.

2-player Codebreaker:
A series of 2-player games begins with the right controller player.  In Codebreaker games where a player must create the secret code, press the digits of the secret code on the Keyboard Controller.  Those digits appear in the upper left corner of the screen.  Press the enter (#) button and the digits disappear.  Now your opponent starts to make guesses using the same procedure as in one-player games.

To change a digit in your guess, move the cursor to the digit to be changed.  Press the new number you want on the Keyboard Controller.  The new number will appear in the position.

NOTE: The computer will not accept a digit whose numerical value is more than defined by a particular game.  For example, if the number span of the secret code is between 1 and 6, the computer will not accept a number 7.

To play a consecutive game of Codebreaker, press any number of the Keyboard to clear the screen.  To begin a new series of consecutive games and scores, press the game reset button on the console.
 

HANDICAP Difficulty Switch

During Codebreaker games, when the right
difficulty witch is in the A position, you have 8 guesses.  In the B
position you have 12 guesses.
 

SAMPLE GAME

Two-Player Codebreaker

The Player Indicator shows that it is the right player's turn.

Using the Keyboard Controller, the player enters the digits 1,2,3, and 4.  The number of guesses for this game (1) appears on the upper left corner of the playfield.  The white Computer Symbols appear on the screen to show that the player has guessed two digits of the Computer Secret Code correctly, but that they are in the wrong position.  The Player Indicator now shows that it is the left player's turn.

The left player enters his guess of 2, 1, 5 and 6.  Since this is the second guess, the number 2 appears in the upper left corner.  The Computer Symbols show that the left player has guessed three numbers in the secret code and they are in the correct position.  The Player Indicator shows that it is the right player's turn.

The right player now enters a guess of 2, 1, 5 and 7.  The Computer Symbols show his guess is correct and the Computer Secret Code appears at the top of the Player Guesses.  The right player scores one point and the cumulative score of both players appears (left player, upper left; right player, upper right.)

The left player starts the next game.
 

HOW TO PLAY NIM

NIM is the oldest mathematical game known to man.  In this computer version of NIM, there are one to four stacks of objects.  You must take turns with the computer or another player removing any number of objects from any stack.  During a turn you must take at least one object, and can take objects out of only one stack.

NOTE:  During a series of consecutive 2-player NIM games, you and your opponent must take turns removing the first object.

There are 2 kinds of Nin games:
* Regular Nim  You win the game when you remove the last object from the screen.
* Nim Misere:  You lose the game when you remove the last object from the screen.

There are 2 kinds of Nim game setups:
* Computer Setup:  Three stacks of objects appear on the screen.  One stack has 3 objects.  The second stack has 4 objects, and the third stack features 5 objects.
* Player Setup:  Using the Keyboard Controller, a player can create a NIM setup.  Create up to 4 stacks with up to 9 objects in each stack.
 

NIM GLOSSARY

Stacks:  The stacks of objects appear on the left side of the screen.

Cursor:  The cursor is used to remove objects from each stack.  Use the Keyboard Controller to move the cursor directly over the stack where you want to remove objects.

Scores:  In two-player games, the score of the left controller player is in the upper left corner; the right controller player score is in the upper right corner.  In one-player games, your score is in the upper left-corner; the computer's score is in the upper right corner.
 

NIM SCORING

A player scores 1 point when he wins a Nim game.  In regular Nim games, you score 1 point when you remove the last object from the screen.  In Nim Misere games you score one point when you force your opponent to remove the last object from the screen.  Scores will accumulate as you play consecutive games of Nim.
 

USING THE KEYBOARD

To start a new NIM game:
* Press any key on the Keyboard Controller at the conclusion of a game.  The setup form the previous NIM game will appear on the screen.

NOTE: In 1-player games, use the left Keyboard Controller.

To remove objects from a particular NIM stack:
*Press the Keyboard Controller cursor (*) button to move the cursor on the screen.  The number of times your press the button determines the stack where the cursor will appear.  For example, press the button 3 times to move the cursor to stack 3.
* After you have moved the cursor to the stack where you intend to remove objects, press any Number button on the Keyboard Controller, and that number of objects will blink and then disappear form the stack.  When you are satisfied with all the moves you've made at each stack, press the Enter (#) button.

NOTE:  You may change your move any time before you press then enter (#) button.  For example, after taking three objects from a stack, you may decide to take only two.  Move the cursor to the stack, then press number 2 on the Keyboard Controller.  One object will reappear in the Stack.

To create a player setup:

Press the Cursor (*) button to move the
cursor to a stack.  The number of times your press the button determines the stack where the cursor will appear.  For example, press the cursor button 3 times to move the cursor to stack 3.

Once the cursor is directly over the particular location, select the number of objects in each stack.  Press a number button on the Keyboard.  The number button you press determines the number of objects in the stack.  For example, press the number 3 and 3 objects will appear in the stack.  When you have selected objects for each stack, press the enter (#) button and the game begins.
 

NIM HANDICAP Difficulty Switch

During 1-player NIM games, you can improve the playing ability of the computer by sliding the right difficulty switch to the "A" position.
 

Use the Keyboard Controllers with this Game Program.  These controllers must be purchased separately.  Be sure to plug the controller cables firmly into the Video Computer System jacks.  For one-player games use the left hand controller.

                             CODEBREAKER
                       3-DIGIT CODE  |  4-DIGIT CODE
Game                 1  2  3  4  5  6| 7  8  9 10 11 12
Number of Players    1  2  2  1  2  2| 1  2  2  1  2  2
Computer Enters Code Y  Y  N  Y  Y  N| Y  Y  N  Y  Y  N
Number Field Span    6  6  6  9  9  9| 6  6  6  9  9  9

                                     NIM
Game Number               13 14 15 16 17 18 19 20
Number of Players          1  2  1  2  1  2  1  2
Computer Sets Up           Y  Y  Y  Y  N  N  N  N
Remove Last Object to Win  Y  Y  N  N  Y  Y  N  N