Go Partner 1680X User manual

60-2428A
OWNER’S MANUAL
Please read before using this equipment.
Partner 1680X Chess Computer
IntoiTAN WARRANTY
InterTAN warrants that this product will be free from defects in materials and workmanship
for a period of ninety (90) days from the date of purchase. Within this period, simply take
the product and your proof of purchase to any InterTAN store or dealer and the product
will be repaired without charge for parts and labour. InterTAN reserves the right to charge
for transportation. Any product which has been subject to misuse or accidental damaqe
is excluded from this warranty.
This warranty is only applicable to a product purchased through InterTAN’s company
° wn ®“ stores and dealers and to a product that is presented for repair in a country where
InterTAN offers the product for sale. While this warranty does not confer any legal rights
other than those set out above, you may have additional statutory rights which will vary
under the laws of the various countries, states, provinces and other governmental entities
m which InterTAN operates. This warranty is subject to all statutory rights you may have
in the country of purchase.
WE SERVICE WHAT WE SELL
MANUFACTURED IN CHINA. IMPORTED FOR/1MPORTE POUR
InterTAN CANADA LTD., BARRIE, CANADA, L4M 4W5
InterTAN AUSTRALIA LTD. A.C.N. 002 511 944
InterTAN U.K. LTD. WEST MIDLANDS, WS2 7PS
TRADEMARKS OF InterTAN INC.
Printed In Hong Kong
41A140-23100

FEATURES
Your GO Partner 1680X Chess Compu¬
ter is a relentless and versatile chess
opponent. Easy to set up and play, it can
teach you proven strategies and tactics
used by grandmasters.
Important:
• All our games and toys are made in
accordance with the European safety
regulations, attested by the label "CE"
fixed on the box.
• Not suitable for children undor3yoarH
of age as the toy is eloctrical In nnturn.
• Keep this owner’s manual so that you
can trace back to tho Importer wlmn
ever necessary.
Its features include:
Special Sensory Playing Surfnco
lets the computer sense a movo when
you press a piece against a square
LCD Display - shows current move,
piece position and verification, lovol,
position set up, coaching, and study
position information.
Rank and File Board Lights - let you
easily see where a piece came from and
where it should go during a move.
Sixty-Four Play Levels - give you 64
levels of difficulty, including regular play,
beginner, mate search, coach, and fun
levels.
Take Back - lets you take back and
replay moves.
Rule Enforcement - prevents illegal
moves.
Snve let* you turn off the computer
without Interrupting the game in progress
•o you cun continue playing later.
Move loin you force the computer’s
move, auk the computer to suggest your
" ■ " I ■ 1 1 . 0 M i < • Milos with the com-
|)Uler, ot loom by watching the computer
ploy ogolrml Itsolf.
Problem f letup lots you set up special
uhenn problem*,
()pi>nlng Itook Memory - c ontains most
"• ..I" MU I,I .11. It. •. |h ••. to lot the com¬
putet tonpond more rapidly during a
UMine'* opening moves.
Pneltlnn Vatlflrnllon shows you the
11 in out pi mlllori of the pieces In case you
in i Idotilolly knock nvet the pieces.
© 1995 InterTAN Iih
A ll Rights Resorvod
GO is a trademark of Inter I AN |m
Coach Function - evaluates your open¬
ing strategy and warns you when your
pieces are threatened.
Evaluation - shows the computer’s
evaluation of the current game.
Display Move - allows you to see the
search depth and move that the compu¬
ter is currently considering.
Non-Automatic Mode - allows you to
play against another person with the
computer as a referee, enter a series of
moves, or replay a game to a certain
position.
Eight Built-In Study Positions - l et you
improve your chess knowledge with the
computer’s help.
Two Power Options - let you power the
computer from batteries or from house¬
hold AC power with an optional AC
adapter.
We recommend that you read these
instructions thoroughly and carefully
before using your GO Partner 1680X
Chess Computer.
Note to Canadian customers: This dig¬
ital apparatus does not exceed the class
B limits for radio noise emissions from
digital apparatus.
3

CONTENTS
Preparation.
Installing/Replacing Batteries.
Using an Optional AC Adapter.
Resetting the Game.
Basic Chess Instructions.
The Game Board.
The Game Pieces.
Description.
Setting Up.
Movement.
Game Rules.
Checkmate — The Object of the Game.
Check.
Capturing.
Capturing En Passant.
Promoting a Pawn.
Castling.
Draw Games.
Basic Operation.
Turning the Game Board On or Off.
Turning the Sound On or Off.
Storing/Removing Game Pieces.
Adjusting the Display Contrast.
Starting a New Game.
Play Levels.
Displayed Level Codes.
Viewing the Current Level.
Changing the Level.
Choosing a Level.
Beginner Levels (A1 through A8).
Fun Levels (B1 through B5).
Indefinite Response Time Level (B6).
Problem Levol (B7).
Mato Finder Lovol (BH).
Practical Lovols (Cl through CH)
Bruto Forco LovoIh (D1 through DM).
Fixed Depth Search Levels (El through Efl)...
Passive Levels (FI through F8).
Aggressive Levels (G1 through G8).
Normal Play Levels (HI through H8) .
Entering Moves.
.6
.6
.6
.7
.8
.8
.8
.8
.8
.9
...11
... 11
... 11
..11
..11
..11
..11
..12
..13
..13
..13
..13
..14
..14
..14
..15
..15
..15
..16
..16
..16
..17
..17
..18
..18
.18
.19
.19
.20
.20
.21
4
Correcting Accidental Wrong Moves.23
Illegal Moves.23
Forcing the Computer’s Move.24
Changing Sides with the Computer.24
Watching the Computer Play Both Sides.24
Playing Black From the Bottom of the Game Board.24
Playing Against Another Person.25
Game Indicators.25
Checkmate.25
Check.25
Stalemate/Draw Game.25
Making Special Moves.26
En Passant Capture.26
Pawn Promotion.26
Castling.26
Coach Function.28
Advanced Functions.29
Verifying Piece Positions.29
Taking Back Moves.29
Problem Setup.;.30
Full Board Setup.30
Partial Board Setup. 3 1
Erasing or Adding Pieces During a Game.32
Correcting Illegal Setups.32
Position Evaluation.32
Search Depth and Current Moves.33
Using the Study Positions. 3 4
About the Study Positions. 3 4
Troubleshooting. 3 8
Maintenance. 3 9

PREPARATION
INSTALLING/REPLACING
BATTERIES
Your chess computer uses 4 AA batteries
(not included). We recommend using
alkaline batteries only and never use
rechargeable battery.
Note: Any batteries purchased for use in
this toy may pose a hazard to children.
Please check safety notice supplied with
batteries before use.
1. Switch I/O to O
2. ProHH down on Iho battory compart¬
ment covor's arrow, then Hilda the
cover in tho direction ol tho arrow.
3. Lift and remove the cover.
4. If necessary, remove and discard the
old batteries.
5. Insert 4 AA batteries as indicated by
the polarity symbols (+ and -) inside
the compartment.
Caution: Batteries installed incor¬
rectly might leak and damage the
computer.
6 . R eplace the cover.
Cautions:
• Use only fresh batteries of the re¬
quired size and type.
• NEVER leave dead or weak batteries
in the computer.
• If the computer will not be used for
several days, and you do not want to
save a game, remove the batteries.
• Do not mix old and new batteries.
• Never mix alkaline battery with other
type of batteries.
• Dlsposo of bntterles properly; do not
bury or burn them.
If the computer does not function prop¬
erly, replace the batteries. If it continues
to function Improperly, you may need to
reset the computer. See "Resetting the
Game."
USING AN OPTIONAL AC
ADAPTER
With an optional AC adapter, you can
operate the computer from household
AC power.
Note: To save game information, you
must install batteries in the computer
even if you are using an optional AC
adapter.
6
mmh
Cautions:
• You must use an AC adapter that
supplies 9 volts and delivers at least
100 milliamps. Its center tip must be
set to negative, and its plug must
correctly fit the 9VDC/100mA jack on
the back of the computer. Using an
adapter that does not meet these
specifications could seriously dam¬
age the computer or the adapter.
• Turn off the computer by switching
I/O to O before you plug or unplug the
AC adapter or its barrel plug.
• Unplug the AC adapter from the AC
outlet before you unplug its barrel plug
from the computer.
Follow these steps to use an AC adapter.
RESETTING THE GAME
If your computer does not work properly
after you replace the batteries, you might
need to reset it. Insert a pointed object
such as a straightened paper clip into
the ACL hole on the bottom of the com¬
puter for about 2 seconds.
1 . Switch I/O to O.
2. Insert the AC adapter’s barrel plug
into the 9VDC/100mA jack on the
back of the computer.
3. Plug the AC adapter into a standard
AC outlet.
7

BASIC CHESS INSTRUCTIONS
THE GAME BOARD THE GAME PIECES
Following International cheaa nolittion,
the game board is made up of 0 vertical
rows called files, and 8 horizontal rows
called ranks. Each file (left to right) is
designated by a file board light and a
letter of the alphabet (A through H), and
consists of 8 squares alternately colored
dark gray and silver. Each rank (bottom
to top) is designated by a rank board light
and a number (1 through 8), and also
consists of 8 squares alternately colored
dark gray and silver.
8
7
R 6
S 3
2
1
ABCDEFGH
FILES
D«scrlptlon
there are 10 light gray and 16 brown
pieces, 32 in all. E ach color has these
pieces:
• 1 KING
•1 QUEEN
•2 BISHOPS
1)0
• 2 KNIGHTS
®o
• 2 ROOKS
1)0
• 8 PAWNS
*)©
Note: The light gray and brown pieces
are referred to as “white” and “black”
respectively throughout this manual.
Note: The silver and dark gray squares
on the game board are referred to
throughout this manual as “white” and
“black” respectively.
Setting Up
Here’s how to set up the game board.
Set the board in front of you so the
display and buttons are to the right. Set
up the white pieces on the side of the
board closost to you this way:
8
• Place the rooks on A1 and HI
• Place the knights on B1 and G1
• Place the bishops on Cl and FI
• Place the queen on D1
• Place the king on El
• Place a pawn on each square A2 - H2
Set up the black pieces on the opposite
side of the board this way:
• Place the rooks on A8 and H8
• Place the knights on B8 and G8
• Place the bishops on C8 and F8
• Place the queen on D8
• Place the king on E8
• Place a pawn on each square A7 - H7
Note: The queen always begins on a
square of her own color.
MOVEMENT
Each kind of piece moves in a different
way.
The rook can move any number of
squares vertically or horizontally, but it
cannot move past a square occupied by
another piece.
The knight moves in an L-shaped pat¬
tern. It moves 2 squares horizontally or
vertically, then moves 1 additional square
at a right angle from its first move. At the
end of its move, the knight must land on
a square of a different color than the one
it started from.
The knight can move even if the squares
it moves through areoccupied. The knight
is the only piece that can “jump” another
piece.
9

Thti blNhop cun movn any number of
squares diagonally, but It cannot mova
past a square occupied by another piece.
n pV." D
• BUB
u a m% a m m
_ ■ a n«
IBID
□ ■ ■ D
The queen can move any number of
squares vertically, horizontally, or diago¬
nally. (The queen’s moves are a combi¬
nation of the rook’s and bishop’s moves.)
The queen cannot move past a square
occupied by another piece.
Ilia king can move only 1 square verti¬
cally. horizontally, or diagonally.
The pawn can move only 1 square di¬
rectly forward, except when capturing
another piece. It captures a piece by
moving diagonally forward 1 square,
except when capturing en passant (see
“Capturing En Passant”). When it moves
from its original position, it can move 1 or
2 squares forward. On subsequent
moves, it can only move 1 square.
A pawn can be promoted to a piece of
higher rank. See “Promoting a Pawn.”
GAME RULES
Checkmate — The Object of the
Game
The object of the game is to position your
pieces so your next move would capture
the opponent’s king, and your opponent
cannot move, protect the king, or capture -|. The white pawn advances from E4
your piece. This is called checkmate. to E5. The black pawn is still in its
Check
original position (D7).
Check occurs when a player’s piece
directly threatens to capture the oppo¬
nent’s king, but the opponent can move
the king, or another piece, to escape
capture.
Capturing
To capture a piece, you move your piece
into the square occupied by the piece
you are capturing, except when captur¬
ing an opponent’s pawn en passant (see
“Capturing En Passant”). Remove the
captured piece from the board.
2. The black pawn advances from D7 to
D5.
3. The white pawn advances to D6
(one square behind the black pawn’s
position). The black pawn is cap¬
tured, even though the exact square
it is on was not occupied by the black
pawn.
PROMOTING A PAWN
When a pawn crosses the entire board,
it may be promoted to a queen or another
piece, even if the queen or other piece is
still on the board.
Capturing En Passant
A pawn can capture an opponent’s pawn
which has just moved 2 squares from its
original position.
CASTLING
Castling protects the king from a poten¬
tial check or checkmate situation by hid¬
ing it behind a fortified position.
Here’s an example of an en passant You may castle if all of the following
capture. conditions exist:
• The king has not moved from his
original position.
• The rook which you want to move by
castling has not moved from its origi¬
nal position.
11

• The king is not placed in check on its
current square, the square to which it
is going, or the square it passes over.
• The squares between the king and the
rook are not occupied.
In castling, the king moves 2 squares in
the direction of either rook. The rook
which is closest to the king after the king
has moved now moves to the square
right next to and on the other side of the
king. Castling counts as 1 move.
Queen side castling
King side castling
DRAW GAMES
In a draw, neither opponent can win or
lose without making an illegal move.
There are 3 different types of draws.
• Stalemate
• 50-move rule
• 3-time repetition
Draw by Stalemate: If the king cannot
move anywhere without being placed in
check (see “Illegal Moves”), the king is
not in check, and no other piece on the
board can move, a draw by stalemate
must be claimed.
Draw by the 50-Move Rule: If 50 con¬
secutive moves are played in a game
where neither side moves a pawn or
captures a piece, a draw by the 50-move
rule must be claimed.
Draw by 3-Time Repetition: If a piece
returns to the same location on the board
three times, a draw by 3-time repetition
must be claimed.
Note: your computer recognizes an im¬
mediate 3 - time repetition.
12
BASIC OPERATION
TURNING THE GAME
BOARD ON OR OFF
Then the file board light next to G
(NORMAL) lights for about 2 seconds.
ON OFF
Switch I/O to I to turn on the game board
for a new game or to return to a saved
game. Switch I/O to O to save the game
and turn off the computer. The computer
stores all game positions and any next-
move calculations it was computing.
Notes:
Notes:
• To save game information, you must • You can turn the computer’s sound on
install batteries in the computer even or off any time during a game,
if you are using an optional AC
adapter. For information about • If you turn the computer’s sound off, it
installing batteries, see “Installing/ does not beep even when you make
Replacing Batteries.” an illegal move.
• If the computer was calculating a
move when you turned it off, but had
not yet completed its calculations, it
resumes its calculations when you
turn it back on.
TURNING THE SOUND ON
OR OFF
The computer’s sound is normally on. To
turn the computer’s sound off, press
COACH LEVEL until the computer beeps
once. Then the file board light next to H
(SILENT) lights for about 2 seconds. To
turn the sound back on, press COACH
LEVEL until the computer beeps twice.
STORING/REMOVING
GAME PIECES
1. Press down on the piece storage com¬
partment cover’s arrow, then slide the
cover in the direction of the arrow.
2. Lift and remove the cover.
13

3. Remove or replace the pieces in the
compartment.
4. Replace the cover.
1 indefinite response time level (B6,
L-ln)
1 problem level (B7, L-CF)
ADJUSTING THE DISPLAY
CONTRAST
Switch I/O to I, then slide Hill on the back
of the computer to the left or right to
adjust the LCD display’s contrast.
STARTING A NEW GAME
Press NEW GAME to start a new game
and erase any game stored in memory.
Note: The computer always starts a new
game with you playing white pieces and
the opponent playing black pieces.
PLAY LEVELS
When you play against the computer,
you can select a level that matches your
skill.
There are 64 different play levels. These
include:
• 8 beginner levels (A1, L-bl through
A8, L-b8)
• 1 mate finder level (B8, L-Fi)
• 8 practical levels (Cl, L-P1 through
C8, L-P8)
• 8 brute force levels (D1, L-tl through
D8, L-t8)
• 8 fixed depth search levels (El, L-dl
through E8, L-d8)
• 8 passive levels (FI, L-cl through F8,
L-c8)
• 8 aggressive levels (G1, L-al through
G8, L-a8)
• 8 normal play levels (HI, L-nl through
H8, L-n8)
The computer uses the rank/file board
lights to display the current level. It also
displays a code on the LCD display that
corresponds to the current level.
For example, if you choose level B2, the
rank/file board lights indicate square B2,
and the display shows L-F2. See “Dis¬
played Level Codes.”
Afteryou install batteries or press ACL to
reset the computer, it resets itself to level
H4. After that, tho computer remains on
the last selectod lovol.
14
5 fun levels (B1, L-FI through B5,
L-F5)
( V iewing the Current Level
To view the current level, press LEVEL
once. The computer beeps, the rank/file
board lights indicate the level, and the
display shows the code that corre¬
sponds to the level. Then pressing
LEVEL again to exit level mode.
I Changing the Level
You can change the level during your
turn during a game.
1 . Press LEVEL. The computer beeps,
the rank/file board lights show the
current level, and the level’s code
appears on the display.
2 . Press the square on the game board
that corresponds to the level you
want (see “Choosing a Level”). The
rank/file board lights and the display
change to show the level you se¬
lected.
3. Press LEVEL again.
15

CHOOSING A LEVEL
If you are a beginner, start out with the
beginner levels (A1 through A8) or fun
levels (B1 through B5). The computer
purposely makes mistakes on these lev¬
els so you can beat the computer and
learn while you play.
If you are an intermediate or advanced
player, try the higher levels.
Note: When you set the level, keep in
mind that when the computer has more
time to think about its moves, it plays
better.
Beginner Levels (A1 through A8)
The eight beginner levels let beginning
and average players play (and win)
more easily than other levels. The
computer makes common mistakes such
as leaving pieces unprotected, failing to
capture unprotected pieces, and
capturing pieces while leaving the king
unprotected.
To select any of these levels, press
LEVEL, press square A1-A8, then press
LEVEL again.
Notes:
• The computer’s opening book memory
contains many major opening strate¬
gies so the computer can respond
more rapidly during a game’s opening
moves. The computer does not use its
opening book memory to compute
moves in the beginner levels and fun
levels.
• Level A1 is the easiest, and the com¬
puter’s playing strength increases
gradually up through Level A8.
The following table shows:
• The square you press to select the
level (after you press LEVEL).
• The average amount of time the com¬
puter takes to determine its move at
that level
Square
Time Per Move
A1
1 Second
A2
2 Seconds
A3
3 Seconds
A4
4 Seconds
A5
5 Seconds
A6
6 Seconds
A7
7 Seconds
A8
8 Seconds
Fun Levels (B1 through B5)
The five fun levels are designed
especially for beginners. Like in the
beginner levels, the computer makes
common mistakes at these levels, such
as capturing an opponent’s pawn by
sacrificing its own higher-value piece.
To select any of these levels, press
LEVEL, press square B1-B5, then press
LEVEL again.
At the lower fun levels, the computer
moves almost instantaneously, not al¬
lowing itself to study a move in any
depth.
Note: Level B1 is the easiest, and the
computer’s playing strength increases
gradually up through Level B5.
The following table shows:
• The square you press to select the
level (after you press LEVEL)
• Information about how the computer
plays at the level
Square
Information
B1
Computer might sacrifice
its own higher-value piece
100 percent of the time
B2
Computer might sacrifice
its own higher-value piece
75 percent of the time
B3
Computer might sacrifice
its own higher-value piece
50 percent of the time
B4
Computer might sacrifice
its own higher-value piece
25 percent of the time
B5
Computerignores obvious
mate-in-1-move
Indefinite Response Time Level
(B6)
At the indefinite response time level, the
computer searches for one move that
will checkmate an opponent or has
searched all possible moves (up to 8
ply). Use this level to have the computer
analyze complicated positions for hours
or even days.
To select this level, press LEVEL, press
square B6, then press LEVEL again.
If the computer finds such a move, the
rank/file board lights show the move.
Otherwise, it continues to analyze the
current game without making another
move until it finds one. (or exhausts the
batteries!)
To stop the search and force the compu¬
ter to make a move, press PLAY. The
computer displays the best move it
found, and play continues.
Problem Level (B7)
At the problem level, the computer
searches for one move that will capture
an opponent’s piece worth more than 2
points.
Note: The computer assigns point val¬
ues to the following pieces:
• Pawn (1 point)
• Bishop (3 points)
• Knight (3 points)
• Rook (5 points)
• Queen (9 points)
To select this level, press LEVEL, press
square B7, then press LEVEL again.
If the computer finds such a move, the
rank/file board lights show the move.
If the computer finds such a series of
moves, the rank/file board lights show
16
17

the first move in the series. If the compu¬
ter cannot find such a series of moves, it
sounds an error beep. Then you must
change levels and press PLAY to return
to normal play.
Mate Finder Level (B8)
The mate finder level lets you set up a
position (see “Problem Setup”) and let
the computer try to checkmate the
opponent’s king within 1 to 4 moves,
regardless of the opponent’s defense.
To select this level, press LEVEL, press
square B8, then press LEVEL again.
If the computer finds such a move, the
rank/file board lights show the move.
The computer sounds an error beep if
any of the following occur.
• No checkmate is possible
• The computer cannot find a check¬
mate
• You press the PLAY button while the
computer is searching for a solution
If an error beep sounds, you must change
levels to return to normal play.
Practical Levels (Cl through C8)
At the practical levels, the computer at¬
tempts to capture the opponent’s pieces
and place the opponent’s king in check
as often as possible. However, the com¬
puter sometimes overlooks traps set by
an opponent, and sometimes positions
its pieces so an opponent can easily
attack them.
To select any of these levels, press
LEVEL, press square C1-C8, then press
LEVEL again.
The following table shows:
• The square you press to select the
level (after you press LEVEL)
• The average amount of time the
computer takes to determine its
move
Square
Time Per Move
Cl
1 Second
C2
2 Seconds
C3
5 Seconds
C4
10 Seconds
C5
30 Seconds
C6
1 Minute
C7
2 Minutes
C8
3 Minutes
Brute Force Levels (D1 through
D8)
The computer normally limits its search
to moves most likely to be successful.
However, at the brute force levels, the
computer checks every move possibility
during play.
To select any of these levels, press
LEVEL, press square D1-D8, then press
LEVEL again.
The following table shows:
• The square you press to select the
level (after you press LEVEL)
• The average amount of time the com¬
puter takes to determine its move
Square
Time Per Move
D1
1 Second
D2
2 Seconds
D3
5 Seconds
D4
10 Seconds
D5
30 Seconds
D6
1 Minute
D7
2 Minutes
D8
3 Minutes
Fixed Depth Search Levels (El
through E8)
At the fixed depth levels, the computer’s
search depth is limited by the level you
choose. The level number indicates the
number of ply (one of your moves or one
of the computer’s moves) the computer
will look ahead to find a move.
For example, if you set the computer to
fixed depth search level El, the compu¬
ter searches ahead only one move, so it
will often overlook a checkmate in two
moves. This gives beginners and aver¬
age players a better chance to win.
To select any of these levels, press
LEVEL, press square El -E8, then press
LEVEL again.
The following table shows:
• The square you press to select the
level (after you press LEVEL)
• The number of ply the computer will
search ahead to find a move
Square
Ply
El
1
E2
2
E3
3
E4
4
E5
5
E6
6
E7
7
E8
8
Passive Levels (FI through F8)
The computer normally chooses open¬
ing moves that follow active openings
and open positions. However, you can
set the computer so it can choose moves
that follow more passive and closed strat¬
egies.
For example, if you set the computer to
a passive level, the computer will avoid
attacks and keep closed positions, and
often will exchange pieces unreason¬
ably, such as its rook for an opponent’s
pawn. This results in weaker play.
To select any of these levels, press
LEVEL, press square F1-F8, then press
LEVEL again.
18
19

The following table shows:
• The square you press to select the
level (after you press LEVEL)
• The average amount of time the com¬
puter takes to determine its move
Square
Time per Move
FI
1 Second
F2
2 Seconds
F3
5 Seconds
F4
10 Seconds
F5
30 Seconds
F6
1 Minute
F7
2 Minutes
F8
3 Minutes
Aggressive Levels (G1 through
G8)
If you set the computer to the aggres¬
sive levels, it will avoid exchanging
pieces so it can present more potential
attacks to an opponent (to keep the
game complicated). It will also check
and attack an opponent's pieces in an
aggressive manner. This results in
stronger play.
To select any of these levels, press
LEVEL, press square G 1 - G8, then press
LEVEL again.
The following table shows:
• The square you press to select the
level (after you press LEVEL)
• The average amount of time the com¬
puter takes to determine its move
Square
Time per Move
G1
1 Second
G2
2 Seconds
G3
5 Seconds
G4
10 Seconds
G5
30 Seconds
G6
1 Minute
G7
2 Minutes
G8
3 Minutes
Normal Play Levels (HI through
H8)
The 8 normal play levels provide the
most challenging and difficult play. These
levels increase in difficulty from level HI
(the easiest) to level H8 (the most diffi¬
cult).
To select any of these levels, press
LEVEL, press square HI -H8, then press
LEVEL again.
The following table shows:
• The square you press to select the
level (after you press LEVEL)
• The average amount of time the com¬
puter takes to determine its move
Square
Time per Move
. HI 1 Second
H2
2 Seconds
H3
5 Seconds
H4
10 Seconds
H5
30 Seconds
H6
1 Minute
H7
2 Minutes
H8
3 Minutes
Note: The time-per-move figure is the
average amount of time the computer
takes to make each move. During the
opening moves of a game, the computer
might move more quickly.
ENTERING MOVES
Playing chess against the computer is
like playing with a human opponent-you
make your move, and the computer re¬
sponds with its move. The only differ¬
ence is that you must physically move
both your and the computer’s pieces. To
make a move, press down gently on the
centerofthe FROM, then theTOsquares.
The FROM square is the current location
of the piece you plan to move; the TO
square is where you are moving the
piece to.
Note: On the LCD display, ^ - indi¬
cates it is white’s turn to move, while
'3i- - indicates that it is black’s turn to
move.
+
+
R --
E --
Note: Once you press a piece (either
yours or the computer’s) down on a
FROM square, you must complete the
move by pressing a TO square before
you can press the COLOR, DISPLAY
MOVE, SETUP, or EVALUATION keys. If
you try to use any of these keys before
you complete the move, the computer
sounds an error beep.
Follow these steps to enter moves.
1. When it is your turn to move,press
down the piece you want to move on
the FROM square. The display
shows the piece you pressed and
the FROM square, and the rank/file
board lights show the FROM square.
2. Press the piece gently down on the
TO square where you want to move
the piece, £ displays with a number.
The number changes while the com¬
puter plans its move.
Notes:
• The computer might respond
instantly, so you might not see
jt and a number.
• During the computer’s turn, the
number displayed next to jj^ might
change. This is because the com¬
puter has changed its mind about
its line of play and is searching
down another line.
20
21

• Occasionally the computer will
make a move even though the
number does not count down to 0.
• If you do not wish to wait for the
computer to calculate its move,
press PLAY once to force the com¬
puter to make a move.
3. W hen the computer is ready to move,
the display shows the piece the com¬
puter wants to move and the TO
square. The rank/file board lights show
the FROM square.
Note: If the computer’s move cap¬
tures any of your pieces, the black
piece’s symbol and X appear on the
display.
4. Press the computer’s piece down on
the FROM square. The display again
shows the piece the computer wants
to move and the TO square, and the
rank/file board lights show the TO
square.
5. Press the computer’s piece gently
down on the TO square. The display
shows — to indicate it is your turn
to move.
Here’s an example of howto move pieces
and communicate with the computer.
Try it now!
1. P ress the white pawn on square E2.
The display shows A E2 and the rank/
file board lights flash at square E2.
2. M ove the pawn to square E4 and
press it on the square. The display
might show and a number. The
computer records your move and be¬
gins to think about its move.
3. T he computer might display ▲ and
E5 for its TO square (you might get a
different response), and the rank/file
board lights show the current location
of the piece the computer wants to
move.
4. P r ess the black pawn on its current
location. The computer displays A
and E5 for its TO square (you might
get a different response), and the rank/
file board lights show the location
where the computer wants you to move
the piece.
5. P r ess the black pawn on the location
where the computer wants you to
move it. The computer displays . .
to indicate it is your turn to move.
—
+
For each move, remember the three
basic steps: press, move, and press
again.
CORRECTING ACCIDEN¬
TAL WRONG MOVES
If you press down on a piece and the
FROM square information appears on
the display, but you decide not to make
that move, press the piece down on the
FROM square again. The computer dis¬
plays ^ - - and you can enter another
move.
When you complete a move by pressing
the piece down on the TO square, the
computer accepts it and immediately
considers its next move. If you change
your mind after completing a move, wait
for the computer to indicate the move it
wants to make. Enter the computer’s
move (see “Entering Moves,”) then press
TAKE BACK. The computer shows you
how to take back its last move. After you
take back the computer’s last move,
press TAKE BACK again. The computer
shows you how to take back your last
move. (See ‘Taking Back Moves.”)
ILLEGAL MOVES
The computer only allows moves that
are in compliance with the rules of chess.
Illegal moves are not accepted. The com¬
puter notifies you of an illegal move or
error by beeping an error tone (if the
sound is on). The FROM square infor¬
mation on the display and the rank/file
board lights also remain unchanged if
you make an error.
These things cause the computer to indi¬
cate an illegal move:
• Pressing on a piece of the wrong
color (e.g., it is white’s turn and you
press on a black piece).
• Pressing on the wrong square when
making the computer’s move on the
board (e.g., the rank/file board lights
show square C5 and you press
square B5).
• Pressing on an empty square without
having first pressed a piece that can
move to that square.
• Moving a piece that puts or leaves
your own king in check or checkmate.
• Attempting to castle by moving the
rook before the king.
Note: If you move your rook incorrectly
when castling and you moved your king
22
23

first, the display shows 00(on a king
side castle) or^ 00 0 (on a queen side
castle), then the rank/file board lights
show the correct square for the rook.
Press the rook on the square the compu¬
ter indicates.
If it is your move and you have already
moved the king, press the rook on the
FROM square.The computer displays
/'—, indicating that you complete the
move.
If it is the computer’s move, the display
and the rank/file board lights show the
TO square. Press the piece on the TO
square.
FORCING THE
COMPUTER’S MOVE
When it is the computer’s turn and the
display shows a countdown, you can
press PLAY to force the computer to
make an immediate move.
Note: At the mate finder level, pressing
PLAY will not cause the computer to
make a move. Instead, the computer will
sound an error beep, and the display will
show —, indicating that it was inter¬
rupted before it could find a checkmate.
To continue the game, you must change
to another level of play. See “Mate Finder
Level (B8).”
CHANGING SIDES WITH
THE COMPUTER
To change sides with the computer, press
PLAY when it is your turn to move. The
computer takes over your pieces and
makes a move. Then you can enter
moves for the computer’s side and con¬
tinue to play the same game.
WATCHING THE COMPU¬
TER PLAY BOTH SIDES
To watch the computer play against it¬
self, press PLAY every time you make
the computer’s indicated move.
PLAYING BLACK FROM
THE BOTTOM OF THE
GAME BOARD
Normally the computer plays the black
pieces on the top of the game board and
you play the white pieces on the bottom.
If you want to play the black pieces from
the bottom, follow these steps.
1. Place the pieces on the board. Be
sure the black pieces are on the side
nearest to you.
HGFEDCBA
1
ISIS
If
"s
i
A
&
2
3
4
5
i
i i
i
i
i il
6
7
|i
JS
8
2. Press NEW GAME, then press PLAY.
The computer indicates the first move
for the white pieces.
Note: When you play black from the
bottom, the move notation is automati¬
cally reversed on the display for you.
playing against
ANOTHER PERSON
The computer has a non-automatic
mode that lets you use it as a referee
when you play against another person,
enter a series of moves, or replay a game
to a certain position.
To use the non-automatic mode, press
NON AUTO. The computer displays n-A
for about 2 seconds, then displays _
After you press NON AUTO, if you want to
know what the computer would do in a
certain position, press PLAY. The com¬
puter makes the next move. After it has
made the move, the non-automatic mode
remains in effect, and you can continue
the game.
To exit the non-automatic mode, press
NON AUTO. The computer displays Aut
for about 2 seconds, then displays either
'A - - or A - depending on which side
made the last move before you pressed
NON AUTO.
GAME INDICATORS
Checkmate
Whenever a checkmate situation occurs
on the board, the computer displays
A - - ^ if the computer wins or - - *
if you win. Press NEW GAME to start a
new game.
+
Check
Whenever a check situation occurs on
the board, the computer displays^ - - +
if the computer has your king in check or
- - + if you have the computer’s king
in check.
Stalemate/Draw Game
Whenever the computer detects that the
conditions forastalemate have occurred,
it displays A - - .. if you are stalemated
or £ - if the computer is stalemated.
If a stalemate occurs, the game is over
and cannot be continued. You can, how-
24
25

I
ever, take back moves (see “Taking Back
Moves”), or change position (see “Prob¬
lem Setup”). Otherwise, press NEW
GAME to start a new game.
When the computer detects that the con¬
ditions for a draw by the 50-move rule
have been met, it claims a draw by
showing either 50= . . or £ 50=..
on the display.
If the computer is about to make a move
to the same location for the third time, or
if it recognizes that its opponent has
made a move that is a third repetition,
it claims a draw by displaying either
fi 3=. . orjfc 3=...
MAKING SPECIAL MOVES
En Passant Capture
The computer recognizes when you
choose to move en passant. It also cap¬
tures a pawn en passant whenever it
determines that such a move is desir¬
able. When performing an en passant
capture, the computer first indicates the
TO square information for its pawn. Then
the computer displays the TO square
information of the captured pawn with x,
and the rank/file board lights also show
the location of the captured pawn. Press
the square and take away the pawn.
Pawn Promotion
When one of your pawns reaches the
opposite side of the board, the computer
displays If you choose to promote
the pawn to a piece other than a queen,
press that piece symbol key to register
the promoted piece, then press the TO
square.
If one of the computer’s pawns reaches
the opposite side of the board, the com¬
puter promotes its pawn to the piece it
determines to be of most value by dis¬
playing the symbol for the piece it wants.
Note: You can substitute the promoted
piece if one is available, but you don’t
need to. The computer accepts the pawn
with the value it was promoted to. All you
need to do is remember which pawn is
your or the computer’s promoted piece.
To make this easier, you can put a piece
of tape on top of the promoted piece to
mark it.
Castling
The computer recognizes when you
choose to castle. Castle by moving your
king first.
The computer castles whenever it deter¬
mines that such a move is desirable. The
computer castles by first moving its king
and then its rook.
Note: Castling is a king’s move. If you
attempt to castle by moving your rook
first, the computer will view the move as
illegal and will not acknowledge it. To
correct that mistake, see “Illegal Moves.”
( F or example, follow these steps to per¬
form a white queen’s side castle.
1. P ress the white king on square El.
The computer displays El, and
the rank/file board lights flash at square
El.
2. M o ve the white king to square Cl
and press it on the square. The com¬
puter displays 000, and the rank/
file board lights indicate square A1.
3. P ress the white rook on square A1.
The computer displays ^ 000, and
the rank/file board lights indicate
square D1.
4. M ove the white rook to square D1 and
press it on the square. The computer
displays and countdown digits to
indicate it is black’s turn to move.
26
27

COACH FUNCTION
The computer’s coach function helps
you to improve your playing skills and
understanding of the game by giving
you important additional help during a
game.
If you select the coach function:
• The computer warns you when you
make a move that is not in its opening
book (pre-selected list of moves) dur¬
ing the opening moves of a game. If
you make such a move, the computer
displays oob, beeps an error tone,
and will not make a countermove. To
continue, either press TAKE BACK to
take back the move and try another
move, or press PLAY to force the
computer to move and continue the
game.
Note: If you press PLAY to force a
move after the computer displayed
oob, the computer will no longer verify
your moves against its opening book
or display oob during the game.
• The computer warns you when it can
attack one of your pieces with one of
its lesser value pieces during a game
except at beginner levels (A1 toA8). If
you make such a move, the computer
indicates the location of the piece with
the rank/file board lights and dis¬
plays the piece symbol and tHt. You
can either make the move or press
TAKE BACK to take back the move
and try another move.
To use the computer’s coach function,
press COACH LEVEL until the file board
light next to F (COACH) lights for about 3
seconds and the display shows CoA.
You can use the coach function at any
time during a game.
Note: After a certain number of moves at
the beginning of a game, the computer
indicates the point where its opening
book ends by displaying oob and beep¬
ing several times. To continue, simply
make your next move or press PLAY to
make the computer move.
28
ADVANCED FUNCTIONS
VERIFYING PIECE
POSITIONS
If you want to verify the location of any
piece on the chess board, you can use
the piece symbol keys to find the position
of all pieces. Each time you press a piece
symbol key, the computer displays the
piece’s color and location, and the rank/
file board lights indicate the piece’s loca¬
tion.
The piece symbol keys look like this.
For example, if the white queen is on
square D1, and you want to verify its
location, press the queen piece symbol
key. The computer displays dl.
If there is more than one of the same-
color piece on the board, repeatedly
press the piece symbol key. The display
and the rank/file board lights show you
the location of each same-color piece. If
you press the piece symbol key more
times than the number of same-color
pieces on the chess board, the display
shows the piece symbol and —.
You can use the piece symbol keys to
verify the location of your pieces.during
your turn.
To verify the location of the black pieces,
press COLOR, then press the piece sym¬
bol key for the pieces you want to find.
Press COLOR again to switch back to
white.
Press any key to return to normal play.
TAKING BACK MOVES
This function lets you take back any
move made by you or the computer after
the move has been completed. If you
change your mind about a move before
pressing the piece down on the TO
square, follow the procedures in “Cor¬
recting Accidental Wrong Moves.”
Note: You can take back moves only
during your turn. If you try to take back a
move during the computer’s turn, the
computer will not allow you to take the
move back until you have made the
move it specifies.
29

1. Press TAKE BACK. Both the rank/file
board lights and the display show
the TO square of the last move.
2 . Press the piece on the indicated TO
square. The rank/file board lights
show the FROM square of the last
move.
3. Move the piece from the TO square to
the FROM square.
4. Press the piece on the indicated FROM
square.
5. Repeat Steps 1 through 4 to take
back additional moves. You can take
back up to 3 moves (your move and
the computer’s move counts as 1
move).
As you take back moves, the computer
will not remind you to return a previously
captured piece to the board nor a castled
rook to its original square. If you are not
sure about the position of a previously
captured piece or castled rook, see “Veri¬
fying Piece Positions.”
PROBLEM SETUP
During your turn, you can use the set up
mode:
• To erase, re-enter, or relocate pieces
any time before or during a game.
• To set up problems or puzzles for the
computer to solve.
Press SETUP to enter the set up mode.
Before using this mode to create your
own positions, familiarize yourself with
this procedure by setting up the board
positions described in the following ex¬
amples.
Full Board Setup
In a full board problem set up, the com¬
puter records the positions you enter into
memory and assumes all other pieces
remain in their initial positions. You only
need to go through these steps for pieces
which you want to remove or move from
their initial positions.
Follow these steps to set up a game with
most of the chess pieces in their original
positions.
1. Press NEW GAME.
2 . Choose the pieces you want to play
with.
3. Press SET UP. The computer displays
-- SET UP.
4. P ress the piece symbol key for the
piece you want to move or remove
and COLOR to change the color, if
necessary. The computer displays
the piece symbol for the piece you
want to move or remove, and the rank/
file board lights indicate the FROM
square.
30
If you want to move or remove more
than one of the same pieces, repeat¬
edly press the piece symbol key until
the rank/file board lights indicate the
FROM square of the correct piece.
5. Press the piece on the square. The
computer displays the piece you want
to move or remove, and the rank/file
board lights flash to indicate the
FROM square.
6 . Either remove the piece, or move the
piece to the square where you want,
then press it on the square. The com¬
puter displays the piece symbol and
either the square you removed it from
or the square you moved it to, and the
rank/file board lights indicate the new
square.
7. Repeat Steps 5 and 6 for any other
pieces you want to move or remove.
8 . When you finish setting up the pieces,
press COLOR until the computer dis¬
plays a piece symbol for the color
whose turn it is, then press SET UP.
Otherwise, simply press SET UP, then
choose the level you want and con¬
tinue the game.
Note: If the computer displays ILL after
you complete Step 8, it indicates that one
or more pieces were moved, removed,
or entered illegally. To correct the set up,
see “Correcting Illegal Setups.”
Partial Board Setup
Follow these steps to clear the chess¬
board and set up only a few pieces.
1. Press NEW GAME.
2. Press SET UP. The computer displays
— SET UP.
3. PressTAKEBACK.Thecomputerdis-
plays CLr for about 2 seconds, and
clears the positions of all pieces from
the board.
4. Press the piece symbol key for the
piece you want to add and COLOR to
change the color, if necessary.
5. Press the piece on the square where
you want to put it. The computer dis¬
plays the piece symbol for the piece
you added and its TO square, and the
rank/file board lights indicate the TO
square.
6. Repeat Steps 4 and 5 for any other
pieces you want to set up.
7. When you finish setting up the pieces,
press COLOR if necessary to choose
whose turn it is to make the move,
then press SET UP. Then choose the
level you want and continue the game.
Note: If the computer displays ILL after
you complete Step 7, it indicates that one
or more pieces were set up illegally. To
correct the set up, see “Correcting Illegal
Setups.”

Erasing or Adding Pieces During
a Game
Follow these steps to erase or add pieces
during a game.
1 . Press SET UP. The computer displays
— SET UP.
2. Press the piece symbol key for the
piece you want to erase or add and
COLOR to change the color, if neces¬
sary.
3. Press the square where you want to
erase or add the piece, then remove
or add the new piece. The computer
displays the piece symbol forthe piece
you erased or added and its FROM
square, and the rank/file board lights
flash or on to indicate the FROM
square.
4. Repeat Step 3 for any other pieces
you want to erase or add.
5. When you finish setting up the pieces,
press SET UP.
Note: If the computer displays ILL after
you complete Step 5, it indicates that one
or more pieces were erased or added
illegally. To correct the setup, see “Cor¬
recting Illegal Setups.”
Correcting Illegal Setups
To be legal, a set up must meet the
following conditions. Otherwise, you must
correct any illegal entry.
• Each side has one king.
• The king for the side which is not to
move is not in check.
• There are no pawns on the first or
eighth rank.
If the computer displays ILL, it indicates
that one or more pieces were set up
illegally. To correct the set up:
1. Press the piece symbol key for each
piece on the board to verify piece
positions. See “Verifying Piece Posi¬
tions.”
2. Set up a piece, or remove the illegal
piece, or replace an incorrectly
placed piece with the right piece.
See “Erasing or Adding Pieces Dur¬
ing a Game.”
3. Press SET UP.
POSITION EVALUATION
The computer can evaluate the current
board position. Press EVALUATION dur¬
ing the computer’s turn. The computer
displays E nn. nn is an evaluation
rating from -99 to 99.
If the evaluation rating is a positive
number, it means that white has an ad¬
vantage over black. If the evaluation
rating is a negative number, it means that
black has an advantage over white.
Note: The evaluation rating might change
during the computer’s move because
the computer follows different play lines
in its analysis.
When the computer makes its move, it
returns to normal display. Press
EVALUATION again after you have made
your move to see the computer’s next
move and continue the game.
Note: The computer will not display an
evaluation rating while set to a mate
I finder level.
SEARCH DEPTH AND
CURRENT MOVE
While the computer is thinking, press
DISPLAY MOVE to see the search depth
and move that it is currently considering.
The computer displays the search depth,
indicating how far ahead in the game
the computer is considering its reaction
to a move you might make. For example,
d-2 shows that the computer is consid¬
ering its move to a depth of 2 half-moves
(1 move). The computer also changes
the rank/file board lights, showing the
moves it is considering.
When the computer makes its next
move, it displays the move.
Note: The computer will not display
current move information while set to a
mate finder level.
32

USING THE STUDY POSITIONS
Your computer has 8 built-in chess study
positions that you can try to solve with its
help.
These study positions are intended to
entertain you and improve your knowl¬
edge of chess. You can select any study
position, analyze it carefully, and try to
find the correct moves for white. The
computer knows the principal lines of
attack as analyzed by chess masters, so
it can help you to solve the study posi¬
tion.
Note: When using the study positions,
the computer automatically sets itself to
level H5 (L-n5) and the coach function.
For more information about levels, see
“Play Levels.” For more information about
the coach function, see “Coach Func¬
tion.”
Follow these steps to use a study posi¬
tion.
1. Repeatedly press STUDIES until you
see the study position you want (1
through 8). The computer displays St
n. n is the study position number (1
through 8). The computer loads the
study position you chose into its
memory.
2. Set up the board as shown in the
diagrams in “About the Study Posi¬
tions” for the study position you se¬
lected.
3. Once you select a study position,
start playing by entering the move
you think is best for white.
If the move you made is in the compu¬
ter’s solution library, the computer will
make a countermove, and play contin¬
ues. If your move is not in the compu¬
ter’s solution library, the computer
beeps and displays oob, indicating that
your move is out of book, and the
computer will not play a countermove.
Press TAKE BACK to take back the
move and try another move. When you
play the correct move, the computer
will countermove with the best defense
for black.
If you cannot find the solution yourself,
press PLAY. The computer shows you
how white should play.
ABOUT THE STUDY
POSITIONS
Study Position 1: White to Play
and Win
Study Position 1 illustrates how to
checkmate an opponent’s single king
with a limited number of pieces.
ABCDEFGH
34
In Study Position 1, the white king and
white rook must work together to trap
and checkmate the black king. From this
position, white can checkmate the black
king in 8 moves.
Study Position 2: White to Play
and Win
Study Position 2 illustrates the strategy
of “gaining the opposition.” In order to
promote a pawn, the white king must first
gain the opposition. Advanced players
know that if 2 kings are facing each other
on the same rank or file with only 1 empty
square between them, then the player
waiting to move is said to have the oppo¬
sition. Gaining the opposition is almost
always an advantage in pawn endgames,
since it allows a player to gain territory
and penetrate the opponent’s position.
Study Position 3: White to Play
and Draw
ABCDEFGH
Study Position 3 illustrates the strategy
of “drawing.” Knowledge of Study Posi¬
tion 2 should help you understand this
strategy. White, in grave danger of los¬
ing, must play a surprising move to de¬
prive black of the opposition and hold

6 th rank, white can check with the rook,
promote a pawn, and win very easily.
The black king and black rook are forced
into a fatal line-up along the 7th rank,
after which white uses a deadly skewer
to win the black rook. Without knowing
this tactic, white could not win the game,
despite a 3- pawn advantage.
Study Position 5: White to Play
and Win
Study Position 5 was taken from the
game Capablanca-Tanerow, New York,
1910. The white queen is attacked by
Tanerow’s black bishop on E5.
Capablanca, who was the world chess
champion from 1921 to 1927, took just a
few brilliant moves to defeat Tanerow.
Can you find them?
Study Position 6: White to Play
and Win
ABCDEFGH
Study Position 6 was taken from a game
between the American genius Paul
Morphy and the Duke of Brunswick, which
was reported to have taken place during
an opera! Even after you have found the
correct attack, you should play through
Study Position 6 more than once, since
the computer will try different defenses
for black.
Study Position 7: White to Play
and Win
Study Position 7 was taken from the
game Alekhine-Grunfeld, Carlsbad, 1923
(with the colors reversed), which “some
competent critics have considered the
finest ever played,” according to chess
grandmaster Reuben Fine. Since the
computer will try different defenses for
black, you should play through Study
Position 7 more than once.
Study Position 8: White to Play
and Win
ABCDEFGH
Study Position 8 was taken from the
game Edemas-Torre, New Orleans,
1920, and contains a series of astonish¬
ing sacrifices of great beauty and origi¬
nality. White could give a “back-rank
mate” if square E8 were not so well
protected. Therefore, white attempts to
divert the black queen or the black rook
on C8 from their defense of this square.
If you do not understand the moves the
computer plays for black, try playing
other moves against the computer. Se¬
lect Study Position 8, press PLAY, make
a different black defensive move, then
press PLAY, again. You will soon realize
why black was so cautious!
36

TROUBLESHOOTING
MAINTENANCE
If your computer is not working as it should, follow the suggestions below to see if you
can eliminate the problem. If you cannot, take the computer to your local Tandy/Radio
Shack store for assistance.
Symptom
Solution
The LCD display is dim or blank.
• Slide Hill to the right until the dis¬
play appears.
The computer does not accept a legal
move, or displays an unexpected
move.
• Verify the position of all pieces,
black and white. See “Verifying
Piece Positions.”
During a normal game, the display
shows oob and will not accept white’s
move.
• The computer is set to the coach
function. Press COACH until the file
board light displays G (NORMAL)
and the display shows Con. See
“Turning the Sound On or Off.”
During set up, the computer displays
ILL and will not accept the setup.
• Correct the set up. See “Correcting
Illegal Setups.”
During a game, the computer will not
display evaluation rating or current
move information when EVALUATION
key is pressed.
• The computer is set to the mate
finder level, and cannot display an
evaluation rating during a mate
search game. Choose another but¬
ton or level.
During a normal game, the computer
will not beep.
• The computer is set to silent. Press
COACH until the file board light dis¬
plays G (NORMAL) and the display
shows Con. See ‘Turning the Sound
On or Off.”
The computer does not work at all.
• Check the batteries and AC adapter
(if used).
Your GO Partner 1680X Chess Compu¬
ter is an example of superior design and
craftsmanship. The following sugges¬
tions will help you care for your computer
so you can enjoy it for years.
Keep the computer dry. If it
gets wet, wipe it dry immedi¬
ately. Liquids contain min¬
erals that can corrode the
electronic circuits.
Use and store the computer
only in normal temperature
environments. Temperature
extremes can shorten the
life of electronic devices,
damage batteries, and dis¬
tort or melt plastic parts.
Handle the computer gently
and carefully. Dropping it can
damage circuit boards and
cases, and can cause the
computer to work improp¬
erly.
Keep the computer away
from dust and dirt, which
can cause premature wear
of parts.
Wipe the computer with a
damp cloth occasionally to
keep it looking new. Do not
use harsh chemicals, clean¬
ing solvents, or strong de¬
tergents to clean it.
Modifying or tampering with the compu¬
ter’s internal components can cause a
malfunction and might invalidate its war¬
ranty. If your computer is not performing
as it should, take it to your local Radio
Shack store for assistance.
38
39