TABLE OF CONTENTS
QUICK START
KEYS AND FEATURES
INTRODUCTION
1. LET’S GET STARTED!
1.1 First, Install the Batteries
1.2 Ready to Play? Here’s How to Move!
1.3 Now It’s the Computer’s Turn
1.4 Change Your Mind? Take Back!
1.5 Game Over? Why Not Play Again!
1.6 Too Easy/Hard? Change the Level!
2. MORE FEATURES TO EXPLORE
2.1 Whose Move? Check the Display!
2.2 Special Chess Moves
2.3 Illegal Moves
2.4 Check, Mate, and Draw
2.5 Interrupting the Computer’s Search
2.6 Changing Sides with the Computer
2.7 Built-In Openings
2.8 Thinking on the Opponent’s Time
2.9 Game Memory
3. THE PLAYING LEVELS
Setting a Playing Level
3.1 Normal Playing Levels (Squares A1-G2)
3.2 Infinite Level (Square H2)
3.3 Tournament Levels (Squares A3-H3)
3.4 Blitz Levels (Squares A4-H4)
3.5 Beginner Levels (Squares A5-H5)
3.6 Mate Search Levels (Squares A6-H6)
3.7 Training Levels (Squares A7-H8)
4. INFO MODE: WATCH AND LEARN!
Using Info Mode
4.1 Principal Variation
4.2 Search Information
4.3 Chess Clock Information
4.4 Move Count/Game Moves
4.5 Want a Hint? Just Ask!
5. OPTIONS FOR FUN AND VARIETY
Selecting Game Options
5.1 Operation Mode Options
Silent Mode, Ticking Clock, Countdown Clock, System Test, Auto
Power Down, Play White from Top)
5.2 Playing Mode Options
Play, Passive Book, Active Book, Complete Book, Tournament
Book, Book On/Off)
5.3 Rotating Display Options
6. VERIFYING/SETTING UP POSITIONS
6.1 Verifying Positions
6.2 Changing and Setting Up Positions
7. TECHNICAL DETAILS
7.1 The ACL Function
7.2 Care and Maintenance
7.3 Technical Specifications
TROUBLESHOOTING GUIDE
(Auto Answer, Sound with Keypress,
(Selective Search, Easy Mode, Random
INTRODUCTION
Ready to enter the exciting world of computer chess?
You’ve come to the right place! Your new computer offers so
many game options, playing levels, and special features—
you’ll never look at chess the same way again! The
Start
at the front of the manual will get you playing right
away, and you’ll find more details on basic game operation in
Section 1. Once you learn the basics, be sure to go on and
explore the rest of this manual, even if you normally don’t like
to read instruction booklets! You’ll discover that this chess
computer has all kinds of other interesting and fun-filled
features that will delight you—we guarantee it!
Your new computer knows and follows all the rules of
chess—you can be sure that it will never cheat! For those of
you who haven’t played before, we have included a short
overview of the rules to get you started. For more detailed
information, why not visit your local library, where you’re sure
to find lots of interesting chess books!
Quick
SOME SOUND OPTIONS!
• Beeper volume too low or too high? Take a look at
Keys and Features
for the location of the Volume
Control Switch!
• Keypress beeps can
be turned on or off, as
you’ll see in Section
5.1 (Option B1).
• Want completely silent
game operation? Find
out how in Section 5.1
(Option C1).
• You can even make
the built-in clock tick like an actual chess clock! For
details, see Section 5.1 (Option D1).
unit, making sure to observe the correct polarity. Use fresh
alkaline batteries for longer battery life!
If you would rather not power your unit with batteries, you
may purchase an optional AC-DC adapter. Please use only
the adapter specified in Section 7.3. Using any other adapter
could damage the computer and will invalidate your warranty.
Please also read the precautionary information regarding
adapter use in Section 7.2. When using an adapter, first plug
it into a wall outlet, and then into your computer.
Important: To ensure that the computer’s memory contents are not lost, keep good batteries installed in the unit
even when you are using an AC-DC adapter.
Turn the computer on by pressing GO/STOP, and a beep
will signal that the game is ready to play. If the computer fails
to respond (static discharge may cause it to lock up), use a
paper clip or another sharp object to press down into the hole
marked ACL in the base of the unit for at least one second.
This will reset the computer.
Tip: To conser ve energy and extend battery life, turn on
the Auto Power Down option (see Section 5.1)!
1.2 Ready to Play? Here’s How to Move!
Okay, now it’s time to start a game! It’s so easy—just follow
these steps:
a. Press GO/STOP to turn the computer on, if you haven’t
already done so.
b. Press NEW GAME to reset the computer for a new
game of chess. Set up the pieces in their starting positions, with the White pieces nearest to you, as shown in
the
Quick Start
c. To make a move, lightly press down on the piece you
want to move until you hear a beep and two board lights
turn on to indicate that square. The sensory board will
recognize your piece automatically. Don’t believe it?
Just look at the display window, which is suddenly full of
information—it shows your piece, along with the piece
color and the square you just pressed!
d. Take that piece and gently press it down on the square
to which you are moving. You’ll hear a second beep as
the computer confirms your move. That’s it—you’ve just
made your first full move of the game! Next, it’s the
computer’s turn.
You’ll notice that the computer often moves instantly at the
beginning of a game, instead of taking time to think. This is
because it is playing from memory, using a built-in “book” of
opening moves (for more information, see Section 2.7).
.
ENGLISH
1. LET’S GET STARTED!
1.1 First, Install the Batteries
Your computer runs on four “AA” (Type AM3/R6) batteries.
Insert the batteries into the compartment in the base of the
1.3 Now It’s the Computer’s Turn
When the computer moves, it beeps and turns on two
board lights indicating the square of the piece it wants to
move. It also shows its full move in the display window.
Check it out—you’ll see the from and to squares of the
1
computer’s move, along with the color and type of piece it is
moving. Press the indicated piece down on the from square
until you hear a beep. Move that same piece to the indicated
to square and press it down to complete the computer’s
move. And it’s your turn again…
1.4 Change Your Mind? Take Back!
When you’re playing chess against this computer, nothing
is “set in stone”—you can change your mind or decide to play
a different move whenever you want! When it’s your turn to
move, simply press TAKE BACK. The display shows the
move to be taken back, and the to square of that move is
also indicated by board lights. Press the piece down gently
on the indicated square, and the computer shows you where
that piece came from. Press the piece down on the from
square to complete the take-back. Repeat this as often as
you’d like, taking back up to 30 individual moves (or 15
moves for each side). To continue playing at any point, just
make another move on the board!
After taking back a capture or/and pawn promotion, the
computer will make sure your board is still set up correctly by
reminding you to put the captured piece or/and pawn back on
the board respectively! It does this by displaying the piece
symbol and its location, and turning on the board lights for
that square. Put the indicated piece back on the board and
press that square to complete the take-back.
1.5 Game Over? Why Not Play Again!
Whenever you finish a game (or if you give up on your
current game), it’s easy to start over again! Reset the computer by pressing NEW GAME, and a New Game tone tells
you that the computer is ready. The same playing level will be
in effect, but you can change it if you’d like, as explained in
Section 3.
Note that pressing the ENTER and CLEAR keys together
will also reset the computer for a new game.
IMPORTANT: Resetting the computer for a new game
clears your current game from the computer’s memory—be
careful not to press the NEW GAME key by mistake!
1.6 Too Easy/Hard? Change the Level!
When you first turn your computer on, it’s automatically set
to Normal Playing Level D1 (five seconds a move). However,
you have 64 different levels to choose from—you’ll want to try
them all out! For descriptions of the playing levels and how to
change levels, see Section 3.
2. MORE FEATURES TO EXPLORE
2.1 Whose Move? Check the Display!
When the computer plays Black, it flashes a black square
in the display while it is thinking. After it has moved, a white
square shows that it is now White’s tur n to move. You can tell
at a glance if the computer is currently thinking, and which
side is to move!
2.2 Special Chess Moves
Captures: To capture, press down on the piece you want
to move, remove the captured piece from the board, and
press your piece down on the square of the captured piece.
Captures are displayed as in E5•F6.
En Passant Captures: In this type of capture, the computer reminds you to remove the captured pawn by using two
board lights to indicate that square. You must press down on
the captured pawn before removing it from the board.
Castling: The computer automatically recognizes castling
after the King is moved. After you have pressed the King
down on its from and to squares, the computer uses board
lights to remind you to move the Rook. Press down on the
Rook’s from and to squares to complete the move. Note that
Kingside castling is displayed as 0-0, and Queenside castling as 0-0-0.
MAKING THE COMPUTER’S MOVE:
AN EXAMPLE!
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8jbielchd8
7agagagag7
6MmMmMmMm6
After the computer display
its moves, it’s up to you to
make its move on the
board! Here, the display
indicates the computer
wants to move its Black
pawn (]!) from E7 to E5.
Pick up the E7 pawn
(indicated by the board
lights) and press it down
lightly on Square E7. The
board lights now point to
Square E5. Press the
pawn down on Square E5
to complete the computer’s
move. Now it’s your turn
again!
Pawn Promotions: When you promote a pawn, first
make your move as usual, pressing your pawn down on its
from and to squares. Next, press the Piece Symbol Key for
your desired promotion piece (%, $, #, or @). The computer
recognizes your new piece immediately, displays it briefly,
and then begins thinking about its next move. Remember to
change your piece on the board! When the computer pro-
motes a pawn, the display shows both the pawn and the
promoted piece. Don’t forget to replace the computer’s pawn
with its new piece.
2.3 Illegal Moves
Your computer will never accept an illegal move! If you try
to make one, you’ll hear a low double beep, and the board
lights and display will show the square the piece came from.
Either move that same piece to another square, or press the
piece back down on its original from square and move a
different piece.
If you don’t make the computer’s move correctly, you’ll also
get an error message. This means you are either moving the
wrong piece, or moving the computer’s piece to the wrong
square. If the computer wants to move its pawn from D7 to
D5, for example, and you press down on D7 and then D6, the
display shows Er:D5 briefly, pointing out your error. The
display then returns to showing the move again (D7-D5),
and the computer expects you to press down on D5 to complete its move.
If you press down on a piece and the from square is
displayed, but you decide not to make that move, simply
press down on that same square again to cancel. Then make
another move. If you change your mind after entering your
whole move, take the move back as described in Section 1.4.
2.4 Check, Mate, and Draw
When a King is in check, the computer first displays its
move as usual. After the move is made, CHECK flashes in
the display for a few seconds, along with the checking move.
The display then goes back to showing the clock.
If the computer discovers a forced mate against its opponent, it first displays its move as usual. After the move has
been made on the board, the computer flashes a mate announcement along with the move for several seconds (e.g.,
=in2 for a mate in two moves). The display then goes
5mMmMmMmM5
4MmMmGmMm4
3mMmMmMmM3
2GAGAMAGA2
1DHCKFIBJ1
TrstuvwxyU
RrstuvwxyS
8jbielchd8
7agagmgag7
6MmMmMmMm6
5mMmMaMmM5
4MmMmGmMm4
3mMmMmMmM3
2GAGAMAGA2
1DHCKFIBJ1
TrstuvwxyU
2
back to showing the clock.
When a game ends in checkmate, the display flashes
MATE (along with the mating move) for a short time after the
move has been made. The display then goes back to showing the clock.
The computer recognizes draws by stalemate, three-fold
repetition, and the 50-move rule. After a draw has occurred,
the display flashes EnD (along with the drawing move or with
the clock display) for a brief time after the move has been
made. The display then goes back to showing the clock.
2.5 Interrupting the Computer’s Search
Think the computer is taking too long to move? You can
interrupt it any time! Simply press ENTER while the computer
is thinking, and it will stop and play the best move it has
found so far. This feature can be handy on the higher levels,
where the computer can take a long time to move, and on the
Infinite Level, where the computer thinks indefinitely unless
you stop it.
On the Mate Search Levels, pressing ENTER won’t force
the computer to make a move. Instead, the computer will
display ––––– to indicate that it was interrupted before it
found a mate. To continue play, switch to another level.
2.6 Changing Sides with the Computer
To change sides with the computer, simply press ENTER
when it’s your turn—and the computer will make the next
move for your side. Change sides as often as you wish!
Want the computer to play the first move for White at the
start of a new game? Press NEW GAME; then press ENTER!
Want to watch the computer play chess against itself?
Press ENTER after each move—watch as it plays for both
sides of the board, one move after another. Study its strategies, and you might improve your own game!
NEED HELP CHOOSING A LEVEL?
SOME TIPS FOR YOU!
• Are you a beginning player?
Beginner Levels or lower Training Levels. These
levels restrict the computer’s search depth, resulting
in weaker play and giving you the chance to learn
about the game and perhaps even win! For even
more of a shot at winning, combine one of these
levels with the Easy Mode option (Section 5.2), so
the computer can’t think on your time!
• Are you an intermediate or more advanced
player?
Levels. The Normal Levels range from easy all the
way up to a difficult 10-minute response time, and
the Tournament Levels are extremely challenging.
The Training Levels allow you to set your desired
search depth—as you conquer each level, go on to
the next! And don’t forget to try the Blitz Levels for
some fast and exciting games of Speed Chess!
• Want to experiment?
to solve problems up to mate in eight—try searching
from a position in one of your own games, or set up
an actual mate problem. Choose the Infinite Level
to have the computer analyze complicated positions
for hours or even days!
back on again, you can continue right where you left off!
Try the Normal, Training, or Tournament
Use the Mate Search Levels
preserve the memory in case the unit is unplugged, keep
batteries installed even when using an adapter.
Start out with the
ENGLISH
To
2.7 Built-In Openings
At the beginning of a game, the computer will often move
instantly on many levels. This is because it is playing from
memory, using its own built-in “book” of opening chess
moves. This book contains most major openings and many
positions from grandmaster play. If the current board position
is in its book, the computer plays a response to that position
automatically, instead of having to think about the move!
A special feature of this computer’s opening book is its
ability to handle
position reached by a certain set of moves can also be
reached when those same moves occur in a different order.
The computer’s integrated Automatic Transposition Manager
handles these cases with ease!
Also included is a unique user-selectable book feature,
which lets you choose from different types of opening books,
or even turn the book off, if desired. For complete details, see
Section 5.2.
2.8 Thinking on the Opponent’s Time
As you play, you may notice that the computer sometimes
replies to your moves immediately, even in the middle of
games played on the higher levels. This is because the
computer thinks on your time, using the time you are taking
for your move to think ahead and plan its own strategies. It
tries to guess the move you are likely to make, and then
calculates its responses for that particular move while you
are still thinking. If the computer has guessed right, there’s
no reason for it to keep on calculating—it immediately plays
the move it has already found!
transpositions.
A transposition occurs when a
To disable this feature, turn on the Easy Mode option, as
described in Section 5.2.
2.9 Game Memory
You may interrupt a game at any time by pressing GO/
STOP. Play is then suspended, and the computer stores your
current game (up to 30 individual moves). When you switch
3. THE PLAYING LEVELS
Your chess computer offers 64 different levels of play!
When you set the level, keep in mind that when the computer
has more time to think about its moves, it becomes stronger
and plays better—just like a human chess player! For an
overview of all the levels, refer to the Level Chart. The levels
are also described individually in this section.
Setting a Playing Level
See “USE THIS CHART TO SELECT A PLAYING
LEVEL!” for an illustrated look at how to set a level and
a chart showing all the levels at a glance.
There are two methods of setting levels—by using the
game keys or pressing the board squares. Whichever
method you use, always press LEVEL first to enter Level
Mode, and the computer will display the current playing level.
When you enter Level Mode the first time, the computer is set
on Normal Playing Level D1 (with an average response time
of five seconds a move), and the display shows L0:05.
• To select a level by using game keys: After entering
Level Mode by pressing LEVEL, change levels one at a
time by using the BLACK/> and WHITE/< keys. As a
shortcut, press LEVEL repeatedly to skip over eight
levels at a time. When the display shows your desired
level, press ENTER to enter your new level into the
computer and exit Level Mode.
• To select a level by pressing board squares: As indicated in the Level Chart, each of the 64 squares corresponds to one level. After entering Level Mode by pressing LEVEL, press a square to activate a level, using the
chart as a guide. When you press down on the desired
square and that level shows in the display, press ENTER
to enter your new level into the computer and exit Level
Mode.
When making your selection via the board
squares, pressing CLEAR has the same effect as press-
3
USE THIS CHART TO SELECT A PLAYING LEVEL!
L
E
V
1. Press to enter Level Mode.
E
L
2. Next, select your level, using the chart below. There are two ways to do this.
• Cycle through the levels until your level is displayed:
Press BLACK/> to increase > levels by one.
Press WHITE/< to decrease < levels by one.
Press LEVEL to increase > levels by eight.
• OR, simply locate your level square and press it to display that level!
TRAINING
LEVELS
MATE
SEARCH
LEVELS
BEGINNER
LEVELS
BLITZ
LEVELS
TOURNA-
MENT
LEVELS
NORMAL
PLAYING
LEVELS +
INFINITE
LEVEL
9 ply
search
PLY:9
A8
1 ply
search
PLY:1
A7
Mate in
1 move
=in:1
A6
1 sec.
per move
bEG:1
A5
5 min.
per game
bL: 5
A4
40 moves
in 1:30
tr40
1:30:00
A3
45 sec.
per move
L0:45
A2
1 sec.
per move
L0:01
A1
10 ply
search
PLY:10
B8
2 ply
search
PLY:2
B7
Mate in
2 moves
=in:2
B6
2 sec.
per move
bEG:2
B5
10 min.
per game
bL:10
B4
35 moves
in 1:45
tr35
1:45:00
B3
1 min.
per move
L1:00
B2
2 sec.
per move
L0:02
B1
11 ply
search
PLY:11
C8
3 ply
search
PLY:3
C7
Mate in
3 moves
=in:3
C6
3 sec.
per move
bEG:3
C5
15 min.
per game
bL:15
C4
40 moves
in 1:45
tr40
1:45:00
C3
1.5 min.
per move
L1:30
C2
3 sec.
per move
L0:03
C1
12 ply
search
PLY:12
D8
4 ply
search
PLY:4
D7
Mate in
4 moves
=in:4
D6
4 sec.
per move
bEG:4
D5
20 min.
per game
bL:20
D4
35 moves
in 1:30
tr35
1:30:00
D3
2 min.
per move
L2:00
D2
5 sec.
per move
L0:05
D1
13 ply
search
PLY:13
E8
5 ply
search
PLY:5
E7
Mate in
5 moves
=in:5
E6
5 sec.
per move
bEG:5
E5
30 min.
per game
bL:30
E4
40 moves
in 2:00
tr40
2:00:00
E3
3 min.
per move
L3:00
E2
10 sec.
per move
L0:10
E1
14 ply
search
PLY:14
F8
6 ply
search
PLY:6
F7
Mate in
6 moves
=in:6
F6
6 sec.
per move
bEG:6
F5
45 min.
per game
bL:45
F4
45 moves
in 2:30
tr45
2:30:00
F3
5 min.
per move
L5:00
F2
15 sec.
per move
L0:15
F1
15 ply
search
PLY:15
G8
7 ply
search
PLY:7
G7
Mate in
7 moves
=in:7
G6
7 sec.
per move
bEG:7
G5
60 min.
per game
bL:60
G4
50 moves
in 2:00
tr50
2:00:00
G3
10 min.
per move
L10:00
G2
20 sec.
per move
L0:20
G1
16 ply
search
PLY:16
H8
8 ply
search
PLY:8
H7
Mate in
8 moves
=in:8
H6
8 sec.
per move
bEG:8
H5
90 min.
per game
bL:90
H4
40 moves
in 3:00
tr40
3:00:00
H3
Infinite
Level
9:99:99
H2
30 sec.
per move
L0:30
H1
ENTER
3. Finally, press to exit Level Mode, using your new level!
ing ENTER—it enters your level into the computer.
• To verify the level without changing it: If you press
LEVEL to verify the level but you don’t want to actually
change levels, press CLEAR. This returns you to normal
play without changing the level or clock settings, even
while the computer is thinking.
Some more important points to remember regarding
playing levels:
• Changing the level always resets the chess clocks.
• We do not recommend changing levels while the computer is thinking. If you must do this, first press ENTER
to abort the computer’s search, and make its move on
the board. Then, take back the computer’s move and
change the level. Finally, press ENTER to make the
computer start thinking on the new level.
• If you change the level while the computer is thinking,
the clock is reset and the current search is aborted.
• If you press LEVEL while the computer is thinking but
3.1 Normal Playing Levels (Squares A1-G2)
4
For more details, see Section 3.
the level is not changed (if you press CLEAR instead of
ENTER), the computer will also abort its search.
LEVEL TIME PER MOVE DISPLAY
A1 .................1 second ................ L 0:01
B1 .................2 seconds .............. L 0:02
C1.................3 seconds.............. L 0:03
D1.................5 seconds.............. L 0:05
E1 ...............10 seconds .............. L 0:10
F1 ...............15 seconds.............. L 0:15
G1...............20 seconds.............. L 0:20
H1...............30 seconds.............. L 0:30
A2 ...............45 seconds .............. L 0:45
B2 .................1 minute ................ L 1:00
C2.................1.5 minutes............ L 1:30
D2.................2 minutes............... L 2:00
E2 ................. 3 minutes............... L 3:00
F2 .................5 minutes............... L 5:00
G2...............10 minutes............... L10:00
When you choose one of the Normal Playing Levels, you
are selecting an average response time for the computer.
Note that the times are averaged over a large number of
moves. In the opening and endgame, the computer tends to
play faster, but in complicated middlegame positions, it may
take longer to move.
D5.................4 seconds.............. BEG:4
E5 ................. 5 seconds.............. BEG:5
F5 ................. 6 seconds .............. BEG:6
G5................. 7 seconds .............. BEG:7
H5.................8 seconds.............. BEG:8
Are you a novice or beginning chess player? If so, these
levels are especially for you! Here, the computer restricts its
search so that it deliberately plays weaker and gives you a
better chance to win! The levels start out easy and gradually
get a little harder—as you beat each one, go on to the next!
ENGLISH
3.2 Infinite Level (Square H2)
LEVEL TIME DISPLAY
H2..............No time limit ............. 9:99:99
On the Infinite Level, the computer will search indefinitely,
until it finds a forced mate or forced move; until it has fully
searched the position to its maximum depth; or until you stop
the search by pressing ENTER. If you halt the search, the
computer makes the move it currently thinks is best. Try
experimenting with this level—set up interesting board
positions and let the computer analyze them for you! It will
think for hours or even days on end, trying to come up with
the best possible move. And don’t forget to watch the computer as it thinks—take advantage of the Rotating Display
feature described in Section 5.3!
3.3 T ournament Levels (Squares A3-H3)
LEVEL MOVES/TOTAL TIME ALTERNATING DISPLAY
A3 .... 40 moves in 1 hr. 30 min. ........ tr40 1:30:00
B3 .... 35 moves in 1 hr. 45 min. ........ tr35 1:45:00
C3.... 40 moves in 1 hr. 45 min. ........ tr40 1:45:00
D3.... 35 moves in 1 hr. 30 min. ........ tr35 1:30:00
E3 .... 40 moves in 2 hrs. ................... tr40 2:00:00
F3 .... 45 moves in 2 hrs 30 min. ....... tr45 2:30:00
G3.... 50 moves in 2 hrs. ................... tr50 2:00:00
H3.... 40 moves in 3 hrs. ...................tr40 3:00:00
The Tournament Levels require you to make a certain
number of moves within a given amount of time. If a player
exceeds the allotted time for a given number of moves, the
computer flashes TImE along with the elapsed time to show
that the game is over. If you wish, you can continue to play
even after the time has run out.
If you choose a Tournament Level, you may want to set
the chess clocks to display countdown time instead of the
elapsed time (see Section 5.1). When the game time runs
out, the countdown clock automatically reverts back to the
normal clock display.
3.4 Blitz Levels (Squares A4-H4)
LEVEL TIME PER GAME DISPLAY
A4 ................. 5 minutes............... bL: 5
B4 ............... 10 minutes............... bL:10
C4...............15 minutes............... bL:15
D4...............20 minutes............... bL:20
E4 ............... 30 minutes............... bL:30
F4 ...............45 minutes............... bL:45
G4...............60 minutes............... bL:60
H4...............90 minutes............... bL:90
On the Blitz Levels (also called Speed Chess or “Sudden
Death” Levels), you set the total time for the whole game. If
the game time is exceeded, the computer flashes tImE
along with the elapsed time to show that the game is over.
If you select a Blitz Level, you may want to set the chess
clocks to display countdown time instead of elapsed time
(see Section 5.1). When game time runs out, the countdown
clock automatically reverts back to the normal clock display.
3.5 Beginner Levels (Squares A5-H5)
LEVEL TIME PER MOVE DISPLAY
A5 ................. 1 second ................ BEG:1
B5 ................. 2 seconds .............. BEG:2
C5.................3 seconds.............. BEG:3
3.6 Mate Search Levels (Squares A6-H6)
LEVEL PROBLEM DISPLAY
A6 .................Mate in 1................ =in:1
B6 .................Mate in 2................ =in:2
C6.................Mate in 3................ =in:3
D6.................Mate in 4................ =in:4
E6 .................Mate in 5................ =in:5
F6 .................Mate in 6 ................ =in:6
G6.................Mate in 7 ................ =in:7
H6.................Mate in 8................ =in:8
Selecting one of these levels activates a special Mate
Finder Program. If you have a position where there may be a
mate and you would like the computer to find it, set the
computer on one of the Mate Search Levels. This computer
can solve mates in up to eight moves. Mates in one to five
are usually found quite quickly, whereas solutions taking six
to eight moves may take quite some time. If there is no mate
present or the computer can’t find a mate, it will display a
series of dashes (–––––). To continue play, simply switch
to another level.
3.7 T raining Levels (Squares A7-H8)
LEVEL DISPLAY LEVEL DISPLAY
A7 ........ PLY: 1 A8 .........PLY: 9
B7 ........ PLY: 2 B8 .........PLY:10
C7 ........ PLY: 3 C8.........PLY:11
D7 ........ PLY: 4 D8.........PLY:12
E7 ........ PLY: 5 E8 .........PLY:13
F7......... PLY: 6 F8 .........PLY:14
G7 ........ PLY: 7 G8.........PLY:15
H7 ........ PLY: 8 H8.........PLY:16
On the Training Levels, the computer’s search depth is
limited to a certain number of moves, as shown above. As
you cycle through the levels, the computer displays PLY:#
for each level. A “ply” is an individual move (a move for either
side), and “#” is the number representing the search depth.
For example, on Level A7, the computer searches to a depth
of one ply (PLY:1), and thus looks ahead only one individual move. On this level, therefore, it will often overlook a
mate in one. This produces weaker play, giving beginners a
better chance of beating the computer!
4. INFO MODE: WATCH AND LEARN!
Imagine this: You’re playing chess against a friend, and
it’s his move. You’d love to know what move he’s thinking
about, and you’d really like to get his opinion of the board
position. But, of course, you won’t ask—because that’s just
not done!
chess computer, you can ask anything you want,
get all the answers!
amount of information about the computer’s thought process.
On request, it will show you the move it’s thinking of, the line
of play it expects after that move, its evaluation of the current
board position, how deeply it is searching, and more. As you
can imagine, studying this information can help you learn so
much more about chess!
Using Info Mode
Info Mode at any time! If you do this while the computer is
Well, guess what—when you play against this
and you’ll
In fact, you can get an incredible
How do you access all this game information? By using
5
thinking, you’ll see the information displays change as the
computer considers different moves and searches deeper!
See “INFO MODE AT A GLANCE!” for a chart summa-
rizing all the Info Mode displays.
Game information is divided into four groups, and pressing
INFO cycles from one group to another. The BLACK/> and
WHITE/< keys can be used to cycle through the displays
within each of the groups. Press CLEAR to exit Info Mode
and go back to showing the normal chess clock.
After learning about Info Mode, take a look at Section 5.3
for a description of the Rotating Display feature. Selecting
this feature makes the computer automatically cycle through
the requested information in one-second intervals every time
it thinks about its move—you can actually watch the computer “think out loud”!
Whenever requested information is not available, the
display will show dashes (–––––).
4.1 Principal Variation
Press INFO the first time to get information on the princi-
pal variation (the predicted line of play, or the sequence of
moves the computer thinks will be made). The first display
you will see is the move the computer is currently thinking of
making. The principal variation is shown to a maximum depth
of four individual moves. Press BLACK/> repeatedly to
scroll forward through all the moves:
• Move 1 (predicted line of play)
• Move 2 (predicted line of play)
• Move 3 (predicted line of play)
• Move 4 (predicted line of play)
Press WHITE/< to scroll backward and see previous
displays again. Press CLEAR to return to the normal clock
display.
Since the first move of the predicted line of play is the
move the computer assumes you will make, you can also
consider this move as a hint! So—whenever you need help,
press INFO on your turn!
INFO MODE AT A GLANCE!
For details, see Section 4.
PRINCIPAL VARIATION INFO:
O
F
N
I
x1
• Move 1 (predicted line of play)
• Move 2 (predicted line of play)
• Move 3 (predicted line of play)
• Move 4 (predicted line of play)
SEARCH INFO:
O
F
N
I
CHESS CLOCK INFO:
O
F
N
I
MOVE COUNT INFO:
O
F
N
I
• Evaluation of current position
x2
• 2 numbers: Search depth + number of
moves examined so far
• Current move under consideration
• Number of positions being searched per
second
• Elapsed time since last move
x3
• Elapsed time for the computer
• Elapsed time for the player
• Remaining time for the computer*
• Remaining time for the player*
• Number of White moves played so far
x4
*Blitz/Tournament Levels only
4.2 Search Information
Press INFO a second time to get information on the
computer’s search! Press BLACK/> repeatedly to scroll
forward through these four displays:
• Evaluation of the current position (based on a pawn being
worth 1.0 points; a positive number indicates White is
ahead)
• Two numbers: The first is the current search depth, or the
number of individual moves the computer is looking
ahead; the second is the number of moves the computer
has examined so far
• The move currently being considered
• The search speed, or number of positions (nodes) being
searched every second
Press WHITE/< to scroll backward and see previous
displays again. Press CLEAR to return to the normal clock
display.
4.3 Chess Clock Information
Press INFO a third time for chess clock information. The
chess clocks keep track of the time for both sides. Press
BLACK/> repeatedly to scroll forward through the clock
displays:
• Elapsed time since the last move was made
• Total elapsed time for the computer
• Total elapsed time for the player
• Remaining time for the computer
(Blitz/Tour nament
Levels only)
• Remaining time for the player
(Blitz/Tour nament Levels
only)
Press WHITE/< to scroll backward and see previous
displays again. Press CLEAR to return to the normal clock
display.
• Moves of the current game
The clocks stop whenever you take back a move, check
level settings, select options, verify or set up a position, or
turn the unit off. In all these cases, however, the times are
retained in memory, and the clocks resume as soon as play
is continued. Whenever you change levels or press NEW
GAME, the chess clocks are always reset to 0:00:00.
4.4 Move Count/Game Moves
Press INFO a fourth time to show the move number in the
game so far. You can then press WHITE/< repeatedly to
scroll backward through the moves of your game (up to 30
individual moves).
• Number of White moves played so far
• Moves of the current game
Press BLACK/> to go forward through the moves again at
any point. Press CLEAR to return to the normal clock display.
4.5 Want a Hint? Just Ask!
In case you missed this feature when it was mentioned in
Section 4.1, we wanted to point it out again—if you ever need
advice on a move, you can always ask the computer for a
hint. Simply press INFO when it’s your turn to move, and the
computer will show a suggested move for your side!
5. OPTIONS FOR FUN AND VARIETY
In addition to all the features you’ve learned about so far,
6
THE BASICS OF OPTION MODE: HERE’S HOW!
N
IO
1.
Press repeatedly to select a Mode:
2.
Next, select your option(s), using the chart below. There are two ways to do this.
• Cycle through the options within that mode:
• OR, simply locate your option square and press it to toggle that option on (+) or off (–).
T
P
O
x1 = OPERATION MODE (AUt...)
x2 = PLAYING MODE (SEL...)
x3 = ROTATING DISPLAY MODE (rd:1...)
x4 = back to OPERATION MODE...
Press BLACK/> to cycle > forward.
Press WHITE/< to cycle < backward.
When your option is displayed, press ENTER to toggle it on (+) or off (–).
ENGLISH
A4
ROTATING
DISPLAY
OPTIONS
PLAYING
MODE
OPTIONS
OPERATION
MODE
OPTIONS
3.
Finally, press to exit Option Mode, using your new option(s)!
Variation
to ply 1
-rd:1
A3
Selective/
Brute Force
Search
+SEL
A2
Auto
Answer
+AUT
A1
CLEAR
B4
Variation
to ply 2
-rd:2
B3
Easy
Mode
-EASY
B2
Sound with
Keypress
+SNd
B1
C4
Variation
to ply 3
-rd:3
C3
Random
Play
-RANd
C2
Silent
Mode
-SIL
C1
your chess computer also offers many other exciting game
options! All of these options are user-selectable at any time
during a game. They are described individually in this section, and summarized in the Option Mode Chart.
Selecting Game Options
There are two methods of setting options, as described
below—by using the game keys or pressing board squares.
See “THE BASICS OF OPTION MODE: HERE’S
HOW!” for a chart summarizing how to use Option
Mode, and an overview of all the options.
The Game Options are divided into three groups:
tion Mode, Playing Mode, and Rotating Display Mode.
Opera-
Pressing OPTION cycles from one group to another. Each group
contains eight different options, and the BLACK/> and
WHITE/< keys are used to cycle through the options within
each of the groups. For each option, a plus (+) in the display
indicates the displayed option is ON, and a minus (–) means
the option is OFF. Press ENTER to turn each option on or off
as it is displayed. Remember that pressing OPTION cycles
through the three main groups, so you can switch to any of
the groups at any time. After you have made all your option
selections from any or all of the option groups, press CLEAR
to return to normal game play.
Another method of selecting game options is by pressing
the option squares.
As shown in the Options Chart, Squares
A1-H1, A2-H2, and A3-H3 can be used to turn options on and
off. First, press OPTION to enter Option Mode; then press
the desired square to access any option, using the chart as a
guide. You’ll see that pressing a square repeatedly turns that
option on and off again, with plus (+) for ON and minus (–) for
D4
Variation
to ply 4
-rd:4
D3
Passive
Book
-bk:P
D2
Ticking
Clock
-tICK
D1
E4
Position
Evaluation
-rd:E
E3
Active
Book
-bk:A
E2
Countdown
Clock
-cdn
E1
F4
Depth &
Moves
-rd:d
F3
Complete
Book
-bk:?
F2
System
Test
-tESt
F1
G4
Nodes
Searched
-rd:n
G3
Tournament
Book
-bk:t
G2
Auto Power
Down
-aPd
G1
For more details, see Section 5.
H4
Time per
Move
-rd:t
H3
Book
On/Off
+bOOk
H2
Play White
from Top
-tOP
H1
OFF. Once you have made all your selections, press CLEAR
to return to your game.
When the computer is first powered on, certain default
options are set. Options which are automatically in effect at
the first startup are shown in the chart with a plus, and options which are off are shown with a minus. Whenever you
reset the computer for a new game, most of your selected
options are carried over to your next game. Some exceptions
are Auto Answer, which is automatically set back to ON when
you start a new game, and Play White from the Top, which is
automatically set back to OFF.
5.1 Operation Mode Options (Squares A1-H1)
These options affect how you operate your computer.
Press OPTION once to select the Operation Mode
Options. Then use the BLACK/> and WHITE/< keys to
select options within this group, and press ENTER to turn
options on (+) or off (–). Or, simply press the option squares
to turn options on or off.
a. Auto Answer Mode (Square A1)
On:+AUt Off:-AUt
Normally, the computer automatically answers with a
countermove whenever you enter a move. If you tur n Auto
Answer off, however, you can enter any number of moves
one by one, without allowing the computer to answer. You’ll
see that there are many great ways to use this feature!
• Play through master games. Press ENTER to see what
the computer would do in any position!
• Keep records of your own chess games. When a game is
over, play to any position to see how other moves or
different strategies might have affected the outcome.
7
• Study opening lines by entering them manually!
• Play against a friend, with the computer acting as referee.
It will monitor your game, checking all moves for legality
and keeping track of time for both sides!
When playing against another person, if either side should
need help, press INFO to see a suggested move. To see
what the computer would do in a certain position, press
ENTER and the computer will make the next move. After it
has made its move, Auto Answer remains off, and you may
continue your game. Also, note that this option will automatically go back to its default setting of ON whenever you press
NEW GAME to reset the computer.
b. Sound with Keypress (Square B1)
On:+SNd Off:-SNd
This option lets you turn off the sound that accompanies
each keypress. You will still hear beeps when the computer
moves or when an illegal move or keypress is made.
c. Silent Mode (Square C1)
On:+SIL Off:-SIL
Normally, the computer always beeps when it has found its
move. For completely silent operation, turn on Silent Mode.
d. Ticking Clock (Square D1)
On:+tICk Off:-tICk
When you turn this option on, you activate a ticking sound
that makes the computer’s clock sound like a real chess
clock! Just imagine—you can create the atmosphere of a
championship chess tournament in your own living room!
e. Countdown Clock (Square E1)
On:+cdn Off:-cdn
Turning this option on causes the computer to display the
countdown time instead of the elapsed time.
Note that this
option is only available in combination with the Tournament
and Blitz Levels.
f. System Test (Square F1)
On:+tESt Off:-tESt
The System Test is included primarily as a troubleshooting
tool. After activating this option by selecting +tESt, pressing
BLACK/> repeatedly will cycle through all the segments in
the LCD display and all the board lights, in turn. To exit the
test, press NEW GAME.
CAUTION: Be careful not to activate this option during a
game, since resetting the computer is the only way to exit the
test, and your current game will be lost.
g. Auto Power Down (Square G1)
On:+aPd Off:-aPd
The Auto Power Down option is a battery-saving feature!
With this option activated, the computer will automatically
turn itself off if no keypresses or moves are made for about
15 minutes. To continue the game where you left off, press
GO/STOP to turn the computer back on.
Note that the com-
puter will not turn itself off while it is thinking.
h. Play White from the Top (Square H1)
On:+tOP Off:-tOP
Want to depart from the usual standard and let the computer play the White pieces from the top of the board? Then
try out this interesting option! Choose +tOP at the beginning
of a new game, and set up the board with the Black pieces
closest to you, as shown in the diagram in this section. Then,
press ENTER to start the game. Watch as the computer
makes the first move for White from the top of the board!
See “PLAYING BLACK FROM THE BOTTOM?
HERE’S THE POSITION!” for a diagram showing the
correct piece set-up when using this option.
When the computer plays White from the top, board nota-
PLAYING BLACK FROM THE BOTTOM?
HERE’S THE POSITION!
When the computer plays
White from the top (Section
5.1, Option H1), be sure to
set up the pieces correctly!
Notice that the Kings and
Queens are positioned
differently, and the board
notation is reversed.
tion is automatically reversed. Additionally, this option will go
back to its default setting of OFF when you start a new game.
5.2 Playing Mode Options (Squares A2-H2)
These options affect how the computer selects its moves.
Press OPTION twice to select the Playing Mode Op-
tions. Then use the BLACK/> and WHITE/< keys to
select options within this group, and press ENTER to turn
options on (+) or off (–). Or, simply press the option squares
to turn options on or off.
a. Selective Search (Square A2)
On:+SEL Off:-SEL
The program in this chess computer normally uses a
Selective Search algorithm.
combinations that would otherwise take much longer to
compute. Turning this option off by choosing -SEL makes
the program switch to a powerful
search method minimizes the risk of an occasional oversight.
Note that the Mate Search Levels always use the Brute
Force method.
b. Easy Mode (Square B2)
On:+EASy Off:-EASy
Want to win more games against the computer? Try turning
on Easy Mode, which prevents the computer from thinking on
your time! This weakens all the playing levels without affecting the computer’s time controls. Normally, as descr ibed in
Section 2.8, the computer thinks on your time, using the time
you are contemplating your next move to think ahead and
plan its strategies. This is part of what makes your computer
such a tough opponent! By using Easy Mode to make all the
levels weaker, you effectively have many more levels to
choose from!
c. Random Play (Square C2)
On:+RaNd Off:-RaNd
Tur n this option on for greater variety of play. Instead of
selecting one single best move, the computer will then
choose one of the best moves to play by consulting its built-in
Randomizer!
d. Passive Book (Square D2)
On:+bk:P Off:-bk:P
Selecting the Passive Book option forces the computer to
give preference to passive and closed positions when deciding which lines to play.
If this option is selected, the Active
Book and Tournament Book options are disabled.
e. Active Book (Square E2)
On:+bk:A Off:-bk:A
When this option is activated, the computer will give preference to active lines and open positions when deciding which
lines to play.
If this option is selected, the Passive Book and
Tour nament Book options are disabled.
RyxwvutsrS
1JBIFKCHD1
2AGAGAGAG2
3MmMmMmMm3
4mMmMmMmM4
5MmMmMmMm5
6mMmMmMmM6
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This allows the computer to see
Brute Force algorithm.
This
8
f. Complete Book (Square F2)
On:+bk:? Off:-bk:?
Turning on the Complete Book option gives the computer
the freedom to choose any move from its built-in book of
openings, so you’ll see a greater variety of opening lines
being played.
If this option is selected, the Passive, Active,
and Tournament Book options are disabled.
With this option on, you may see the computer make some
questionable moves. This is because its built-in book of
openings must contain responses to certain lines of play
(even questionable lines), in case they are played. While the
computer would not make these moves on its own, it needs
to know how to respond to them in the best way. Therefore,
when you turn on the Complete Book, the computer could
potentially play one of these moves.
g. Tournament Book (Square G2)
On:+bk:t Off:-bk:t
When you turn the Tournament Book option on, the computer is forced to always select the best possible line of play
in every opening. While this results in the best chess play, it
also narrows down the computer’s choice of moves by limiting its available book lines.
If this option is selected, the
Active Book and Passive Book options are disabled.
h. Book On/Off (Square H2)
On:+bOOk Off:-bOOk
If you ever want to completely lock out the computer’s builtin book of openings, set this option to -bOOk. When the
book is off, the computer is forced to take time to think of its
moves from the beginning of the game, rather than making its
moves from memory. For details on openings, see Section
2.7.
If you turn the book completely off, the other book op-
tions (described previously) are also automatically disabled.
IT’S EASY TO VERIFY PIECES!
NEW
GAME
CLEAR
1. Press NEW GAME to reset the computer,
and set up the chess pieces in their starting
positions. Display: [ 0:00:00.
2. Press the KNIGHT Key.
Display: [,@,b1 (the first White Knight).
Board lights on: B+1.
3. Press KNIGHT again.
Display: [,@,G1 (the second White Knight).
Board lights on: G+1.
4. Press KNIGHT again.
Display: ],@,b8 (the first Black Knight).
Board lights on: B+8.
5. Press KNIGHT again.
Display: ],@,g8 (the second Black Knight).
Board lights on: G+8.
6. Press KNIGHT again.
Display: @ (no more Knights left on the
board).
7. Repeat the above steps for any piece you
want to verify! Finally, press CLEAR to exit
Verify Mode.
For more details, see Section 6.1.
TRY OUT POSITION MODE!
ENGLISH
5.3 Rotating Display Options (Squares A3-H3)
IMPORTANT: The Rotating Display feature is only
activated WHILE THE COMPUTER IS THINKING.
Normally, the computer’s display shows the time for the
player to move. However, the computer can also display
other information, as described in Section 4 (Info Mode). The
Rotating Display feature works hand-in-hand with Info Mode,
since it allows you to choose which of the Info Displays you
want to see, and then cycles your choices in one-second
increments. You may turn on any or all of the Rotating Display options, as desired.
Press OPTION three times to select the Rotating Display Options. Then use the BLACK/> and WHITE/< keys
to select the options you want to see rotated in the display.
The options are described below and summarized in the
Option Mode Chart in this section. Press ENTER to turn
these options on (+) or off (–). Or, simply press the option
squares to turn the options on or off.
If you think the display information is changing too quickly
when it rotates, press INFO to freeze the display. Successive
presses of INFO and the BLACK/> and WHITE/< keys will
allow you to cycle through all the displays manually, as
described in Section 4. To start the display rotation again,
press OPTION followed by CLEAR. In any event, when the
computer starts thinking about its next move, the display
automatically starts rotating again.
The game information you can see
thinking
includes the following:
while the computer is
• rd:1 to rd:4 = the predicted line of play (up to four
individual moves)
• rd:E = an evaluation of the current position
• rd:d = the computer’s search depth, and the number of
moves examined so far in the game
• rd:n = the number of nodes searched per second
• rd:t = the amount of time the move has taken so far
When requested information is not available, the display
NEW
GAME
1. Press NEW GAME to reset the computer,
and set up the chess pieces in their starting
positions. Display: [ 0:00:00.
POSITION
2. Press POSITION to enter Position Mode.
Display: -POS-.
3. Press the White pawn down on Square E2,
and remove it from the board.
E2
Display: [,!,-E2.
4. Press that same pawn down on Square E3
to add it to the board.
E3
Display: [,!,+E3.
5. Press the Black Queen down on Square
D8, and remove it from the board.
D8
Display: ],%,-D8.
6. Press that same Queen down on Square
H5 to add it to the board.
H5
Display: ],%,+H5.
7. Press WHITE/< to change the color to
move next.
CLEAR
8. Press CLEAR to exit and return to normal
game play.
For more details, see Section 6.2.
will show a series of dashes (–––––).
For complete descriptions of these options and details on
exactly how to interpret the displays, see Section 4.
6. VERIFYING/SETTING UP POSITIONS
6.1 Verifying Positions
See “IT’S EASY TO VERIFY PIECES!” for a step-by-
step example of using Verify Mode.
9
If you should knock over the chess pieces or if you think
your board position may be incorrect, the computer can verify
all the piece locations for you!
When it is your turn, press one of the PIECE SYMBOL
KEYS (&, %, $, #, @, or !). The computer shows you where
the first piece of that type is located on the board—the display shows the piece symbol, color indicator, and square
designation, and board lights also indicate the square. Press
the same PIECE SYMBOL KEY again to see the location of
the next piece of that same type. All the White pieces are
shown first, then the Black pieces. When there are no more
pieces of that type on the board, only the piece symbol
remains in the display.
Want to verify more pieces? Simply repeat the above
procedure using the other PIECE SYMBOL KEYS, verifying
the entire board if desired! Press CLEAR to return to normal
game play.
6.2 Changing and Setting Up Positions
See “TRY OUT POSITION MODE!” to get an idea of
how this feature works.
Position Mode is an exciting feature which lets you set up
special board positions to play from, or problems you want
the computer to solve!
Caution: All previous moves in your
current game will be erased from the computer’s memory if
you make changes to the position during a game.
Press POSITION to enter Position Mode, and the display
shows -POS-. You can change or set up a position whenever it is your turn to move. After you have set up your new
position, press CLEAR to exit Position Mode.
• To remove a piece from the board, press the piece
down on its square and then remove it.
Notice that the
display indicates the piece type and color, along with a
minus sign (–) and the square location.
• To move a piece from one square to another, press
the piece down on its original square, pick it up, and then
press it down on the new square.
As you do this, the
display will show a minus sign (–) for the first square, and
a plus sign (+) for the second square.
• To add a piece to the board, first press the PIECE
SYMBOL KEY for that piece (&, %, $, #, @, or !). Make
sure the display shows the correct color symbol for the
piece you want to add. If it does not, press BLACK/> or
WHITE/< to change the color. When the display shows
the correct piece type and color, place that piece onto the
desired square and press down gently.
The display
shows a plus sign (+), along with the location for that
square.
press down on another square. To add a different piece,
press a different PIECE SYMBOL KEY and follow the
same steps outlined above.
• To clear the board, press ENTER while you are in
Position Mode. The display will show _ to symbolize
an empty chessboard. Press ENTER once more to
confirm that you do want to clear the board. Then add
pieces as described previously. If you decide not to clear
the board, press CLEAR to cancel. This feature can be
handy when you want to set up a position with only a few
pieces, where it would be much easier to start out with an
empty board!
• Once you have changed the board position as described above, make sure the color indicator in the
display is showing the correct color of the side to move.
Change the color, if necessary, by pressing BLACK/> or
WHITE/<.
• To exit Position Mode, press CLEAR. You will return to
normal game play, with your new board position!
To add another piece of the same type, simply
Note that any legal position can be set up using the above
procedures. The computer will not permit you to set up an
illegal position, such as one where there are more than the
prescribed number of pieces for a normal game, or one
where a King is in check and is not to move. In such cases,
the computer will simply beep when you press CLEAR, and
you will not be allowed to exit Position Mode. Check the
position using the PIECE SYMBOL KEYS, if necessary, and
correct the position (by adding a piece, removing a piece, or
moving an incorrectly placed piece). Then press CLEAR to
exit Position Mode.
7. TECHNICAL DETAILS
7.1 The ACL Function
Computers sometimes “lock up” due to static discharge or
other electrical disturbances. If this should happen, take out
the batteries and use a pin or another sharp object to press
into the hole marked ACL in the base of the unit for at least
one second. This resets the computer.
7.2 Care and Maintenance
Your chess computer is a precision electronic device, and
should not be subjected to rough handling or exposed to
extreme temperatures or moisture. Be sure to disconnect the
adapter (if applicable) and remove the batteries before cleaning the unit. Do not use chemical agents or liquids to clean
the unit, as they may damage the plastic.
Weak batteries should be replaced promptly, since they
can leak and damage the computer. Please also note the
following regarding the use of batteries.
alkaline or zinc carbon batteries. Do not mix different
types of batteries or new and used batteries. Do not
recharge non-rechargeable batteries. Use only the recommended batteries or equivalent. Be sure to observe
the correct polarity when inserting batteries. Worn out
batteries should be removed from the unit promptly. Do
not short circuit the supply terminals.
If an AC-DC adapter is used with this unit, it must be as
specified in Section 7.3. An adapter is not a toy and should
be handled with care. Please also note the following regarding the use of an AC-DC adapter.
positive adapter with safety isolating transformer. The
polarity symbols confirming its center positivity should
be clearly marked on the adapter, and the adapter must
comply with CEE Publication 15 and with EN60742. The
adapter should be regularly examined for potential hazards such as damage to the plug, cable or cord, casing
or other parts. In the event of damage, the adapter
should not be used.
7.3 Tec hnical Specifications
Clock Frequency: 10 MHz
Keys: 17
LCD Display: 48-segments
Batteries: 4 x “AA”/AM3/R6 (1.5V) cells
Power Consumption:330 mW maximum
Dimensions: 308 x 230 x 29 mm
Weight: 1 kg
AC-DC Adapter: 9V/300mA center-positive
(optional)
Please retain this information for future reference.
The manufacturer reserves the right to make technical changes without
notice in the interest of progress.
Warning: Use only
Warning: Use a center
10
TROUBLESHOOTING GUIDE
SYMPTOMS
The computer doesn’t react,
behaves erratically, or
“freezes” during a game.
The display is difficult to read.
The computer will not make a
move.
The computer will not accept
your move.
An error message shows
when a square is pressed.
You cannot exit Position Mode
with CLEAR—the computer
only beeps.
POSSIBLE CAUSES
• Batteries are not installed correctly.
• Batteries are weak or bad.
• Static discharge or an electrical disturbance has
caused a lock-up.
• Batteries are weak or bad.
• The Auto Answer option may be turned off.
• You may be on a level where the computer
thinks for a long time.
• Is it your turn? Is your King in check? Will your
move put your King into check? Are you trying to
castle incorrectly? Are you moving to an illegal
square?
• The computer is thinking (its color symbol is
flashing in the display).
• You have not entered the computer’s last move
correctly (wrong from or to square).
• You have set up an illegal position. A King may
be in check, you may have too many pawns on
the board, etc.
ACTION TO TAKE
• Reinstall the batteries, making sure to observe
the correct polarity.
• Replace the batteries.
• Press into the hole marked ACL to reset the
computer (see Section 7.1).
• Replace the batteries with fresh alkalines.
• The computer only responds automatically if
Auto Answer is on (see Section 5.1).
• To interrupt the computer and force it to make a
move, if desired, press ENTER.
• Review the chess rules. Verify the position to
make sure it is correct (see Section 6.1).
• To interrupt the computer, press ENTER.
• Check the display, and press the correct square
to complete the computer’s move.
• Check your position, and make the necessary
changes (see Section 6.2). Then press CLEAR
again to exit Position Mode.
ENGLISH
The display is showing _.
The computer seems to be
making illegal moves.
The computer is making
instant or irrational moves.
The computer is silent.
You are using an optional AC-
DC adapter, but the computer
does not work.
• You are in Position Mode, and have pressed
ENTER to clear the board.
• The computer has made a special move, such
as en passant, castling, or a pawn promotion.
• Your board position is incorrect—pieces have
been moved.
• Batteries are running out.
• The computer may be on one of the lowest
Beginner or Training Levels, where it moves
quickly and plays weaker than normal because
its search depth is limited.
• Batteries are running out.
• The Silent Mode option may be activated.
• Wrong adapter type, incorrect voltage rating, or
defective adapter.
• To clear the board, press ENTER once more; to
cancel, press CLEAR (see Section 6.2).
• Review the chess rules. Verify the position as
described in Section 6.1.
• Verify the position (see Section 6.1).
• Replace the batteries with fresh alkalines.
• Press LEVEL to see which level is selected
(see Section 3). Change to another level, if
desired.
• Replace the batteries with fresh alkalines.
• Check the option settings (see Section 5.1).
• Use only the recommended AC-DC adapter, as
specified in Section 7.3.
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