Radio Shack E-Chess User manual

Owner’s Manual Please read before using this equipment.
E-ChessTM

2Contents
ˆ
Contents
Features ........................................................................................................... 3
Preparation ...................................................................................................... 4
Installing/Replacing Batteries ........................................................................ 4
Resetting the Computer ................................................................................ 5
Turning the Computer On/Off ........................................................................ 5
Setting the Automatic Shut-Off Time ............................................................. 5
Turning the Sound On/Off ............................................................................. 6
Adjusting the Contrast ................................................................................... 6
Basic Chess Instructions ............................................................................... 6
The Chess Board .......................................................................................... 6
The Game Pieces ......................................................................................... 6
Game Rules .................................................................................................. 7
Basic Operation ............................................................................................... 8
Starting a New Game .................................................................................... 8
Entering Moves ............................................................................................. 9
Having the Computer Suggest a Move ....................................................... 10
Changing Colors with the Computer ........................................................... 10
Showing All Legal Moves ............................................................................ 10
Displaying Game Information ...................................................................... 11
Game Indicators .......................................................................................... 12
Chess Play Levels ...................................................................................... 12
Advanced Chess Functions ......................................................................... 15
Undoing Moves ........................................................................................... 15
Selecting an Opponent ............................................................................... 16
Using Opening Books ................................................................................. 16
Playing Great Games .................................................................................. 17
Playing Mate-in-Problem Games ................................................................ 19
Using Teaching Modes ................................................................................ 19
Using Problem Setup .................................................................................. 20
Troubleshooting ............................................................................................ 21
Care ............................................................................................................ 22
©2001 RadioShack Corporation.
All Rights Reserved.
RadioShack and RadioShack.com are trademarks used by RadioShack Corporation.

3
Features
ˆ
Features
Your RadioShack E-Chess computer
is one of the most versatile chess
computers available. Your computer
can play chess at a relative strength
of 1700.
The computer's many features in-
clude:
8 Teaching Modes — help you learn
how to checkmate an opponent’s
king.
73 Chess Play Levels — let you
match the level of difficulty to your
skill level.
Opponent Selection — lets you play
against the computer or another per-
son, or have the computer play itself.
Chess Clocks — show the elapsed
time for each move during a game or
the total game time.
Liquid Crystal Display — shows
current move, piece position and veri-
fication, level, position set up, and
chess clock information.
34-Strategy Opening Book Library
— contains most major opening strat-
egies, so the computer can respond
more rapidly during a game’s opening
moves. This speeds up play and
helps you play more professionally.
Undo — lets you take back the previ-
ous move, to help you improve your
game.
Rule Enforcement — the computer
prevents illegal moves like a game
referee, to help beginners learn the
rules.
Power Off Option — lets you turn off
the computer without interrupting the
game in progress, so you can contin-
ue playing later.
Help — shows you all legal moves
you can make during a game.
Move Suggestion — lets you ask the
computer to suggest your next move,
teaching you the best response to an
opponent’s move.
Great Game Library — the computer
contains 16 historic games in its
memory, letting you practice your
chess skills against the moves of the
greatest players on earth.
Problem Setup — lets you set up
special chess problems so you can
practice solving problems published
in newspapers, chess literature, or
history books.
Contrast Adjustment — lets you ad-
just the display contrast to the desired
level for easier viewing.
Note: We recommend that you read
these instructions thoroughly before
you use your computer.

4Preparation
ˆ
Preparation
INSTALLING/REPLACING
BATTERIES
Your computer requires three AA bat-
teries (not supplied) for power. For
the best performance and longest life,
we recommend RadioShack alkaline
batteries.
Cautions:
• Use only fresh batteries of the
required size and recommended
type.
• Do not mix old and new batteries,
different types of batteries (stan-
dard, alkaline, or rechargeable),
or rechargeable batteries of dif-
ferent capacities.
Important: If you are replacing the
computer’s batteries, make sure you
turn off the computer before opening
the battery compartment cover. This
saves the current game in the com-
puter. Your computer saves any
games in its memory for about 30
seconds after you remove the batter-
ies.
1. To save the current game and
turn off the computer, press RAT-
ING/OFF.
2. Use a Phillips screwdriver to
remove the screw from the bat-
tery compartment cover, then lift
off the cover.
3. Place the batteries in the com-
partment as indicated by the
polarity symbols (+ and –)
marked inside.
When you install the batteries, &'
&'&'
&'
9>;II
9>;II9>;II
9>;II appears, pieces appear on
the chess board display, and the
computer sounds a tone.
Note: If the computer does not
operate properly, you might need
to reset it. See “Resetting the
Computer” on Page 5.
4. Replace the cover and secure it
with the screw.
When the display dims, the sound be-
comes weak or distorted, or the com-
puter stops operating properly,
replace the batteries.
Warning: Dispose of old batteries
promptly and properly. Do not burn or
bury them.
Caution: If you do not plan to use the
computer for a month or more, re-
move the batteries. Batteries can leak

5
Preparation
chemicals that can destroy electronic
parts.
RESETTING THE
COMPUTER
If your computer does not work prop-
erly after you replace the batteries, in-
sert a pointed object, such as a
straightened paper clip, into the RE-
SET hole on the front of the computer.
The computer sounds a tone and &'
&'&'
&'
9>;II
9>;II9>;II
9>;II appears.
Note: Resetting the computer clears
any game you stored.
TURNING THE
COMPUTER ON/OFF
Press CLEAR/ON to turn on the com-
puter.
Note: If you replace the batteries
without saving the current game or
press RESET, the computer resets it-
self to a new game. After that, the
computer resets itself to Level 01. For
more information, see “Chess Play
Levels” on Page 12.
To save the current game and turn off
the computer, press RATING/OFF.
Important: If the computer is think-
ing, it might not turn off when you
press RATING/OFF. If this happens,
press OPTIONS/MOVE to force the
computer to make its move, then
press
RATING/OFF.
The computer stores all of the game
positions and any next-move calcula-
tions it has computed.
To continue playing the current game,
press CLEAR/ON again.
SETTING THE
AUTOMATIC SHUT-OFF
TIME
The computer automatically turns it-
self off if you do not press a button for
8 minutes. Follow these steps to
change the automatic shut-off time.
1. Press SHIFT. C
CC
CEZ
EZEZ
EZ;
;;
;appears.
2. Repeatedly press OPTIONS/
MOVE until IB;;F
IB;;FIB;;F
IB;;F appears.
3. Repeatedly press NEXT PIECE or
LAST PIECE until the desired time
appears. The time is displayed in
minutes.
To turn off the automatic shut-off
function, set the time to &&
&&&&
&&.
CLEAR/ON — Turns
the computer on.
RATING/OFF — Turns the
computer off. RESET Hole

6Basic Chess Instructions
To continue playing the current game,
press CLEAR/ON.
TURNING THE SOUND
ON/OFF
The computer normally sounds beeps
during a game and every time you
press a button. Follow these steps to
turn the sound on or off.
1. Press SHIFT. CEZ;
CEZ;CEZ;
CEZ; appears.
2. Repeatedly press OPTIONS/
MOVE until IEKdZ
IEKdZIEKdZ
IEKdZ appears.
3. Repeatedly press NEXT PIECE or
LAST PIECE until &
&&
&(no sound
except error beep), '
''
'(no key
sound), or (
((
((all sounds on)
appears.
To continue playing the current game,
press CLEAR/ON again.
ADJUSTING THE
CONTRAST
1. Press SHIFT. CEZ;
CEZ;CEZ;
CEZ; appears.
2. Repeatedly press /UNDO
until the contrast you want to see
appears.
To continue playing the current game,
press CLEAR/ON again.
ˆ
Basic Chess Instructions
THE CHESS BOARD
Following international chess nota-
tion, the chess board is made up of 8
vertical rows called files, and 8 hori-
zontal rows called ranks.
Each file (left to right) is designated
by a letter of the alphabet (A through
H), and consists of 8 squares alter-
nately colored green and silver.
Each rank (bottom to top) is designat-
ed by a number (1 through 8), and
also consists of 8 squares alternately
colored green and silver.
Note: The silver and green squares
are referred to as “white” and “black,”
respectively, throughout the rest of
this manual.
THE GAME PIECES
There are 16 white and 16 black piec-
es, 32 in all. Each color has these
pieces.
Each kind of piece moves in a differ-
ent way.
«#/ ª(rook) — can move any
number of squares vertically or hori-
zontally, but it cannot move through a
square occupied by another piece.
¥#/ ¤(knight) — moves in an L-
shaped pattern. It moves 2 squares

7
Basic Chess Instructions
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 are occu-
pied. (It is the only piece that can
“jump” another piece.)
¡#/ (bishop) — can move any
number of squares diagonally, but it
cannot move through a square occu-
pied by another piece.
-#/ ¨(queen) — can move any
number of squares vertically, horizon-
tally, or diagonally. (The queen's
moves are a combination of the
rook's and bishop's moves.) The
queen cannot move through a square
occupied by another piece.
£#/ ¢(king) — can move only 1
square vertically, horizontally, or diag-
onally.
§#/ ¦(pawn) — can move only 1
(or 2) squares directly forward, except
when capturing another piece. It cap-
tures a piece by moving diagonally
forward 1 square, except when cap-
turing 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”
on Page 8.
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 your piece. This is
called checkmate.
Check
Check occurs when a player's piece
directly threatens to capture the op-
ponent'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
capturing an opponent's pawn en
passant (see “Capturing En Pas-
sant”). Remove the captured piece
from the board.
Capturing En Passant
A pawn can capture an opponent's
pawn that has just moved 2 squares
from its original position.
Here's an example of an en passant
capture.
1. The white pawn advances from
E4 to E5. The black pawn is still
in its original position (D7).

8Basic Operation
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 captured by the white pawn,
even though the exact square it
is on is not occupied by the white
pawn.
Promoting a Pawn
When your pawn crosses the entire
board, you can promote it to a queen
or another piece, even if the queen or
other piece is still on the board.
Castling
Castling protects the king from a po-
tential check or checkmate situation
by hiding it behind a fortified position
or moving it out of immediate danger
of attack. You can castle if:
• The king has not moved from his
original position.
• The rook that you want to move
by castling has not moved from
its original position.
• The king is not placed in check
on its current square, the square
to which it is going, or a 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 that 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.
Notes:
• If a rook is on the same side of
the board as the king's square,
this is called a
king's side castle
.
If the rook is on the same side of
the board as the queen's square,
this is called a
queen's side castle
.
• In castling, the king always
moves first, then the rook.
ˆ
Basic Operation
STARTING A NEW GAME
To start a new game and erase any
game stored in memory, press SHIFT
then NEW GAME/HELP. &'ý 9>;II
&'ý 9>;II&'ý 9>;II
&'ý 9>;II ap-
pears and the computer sounds a
tone.
Note: The computer always starts a
new game with you playing the white
pieces and your opponent playing the
black pieces.

9
Basic Operation
ENTERING MOVES
Playing chess against the computer is
like playing with a human opponent
— you make your move, and the
computer responds with its move.
Making a move involves a FROM
square and a TO square. The FROM
square is the current location of the
piece you plan to move; the TO
square is where you are moving the
piece.
Notes:
• On the display, indicates it
is white's turn to move,
while indicates it is black's
turn to move.
• You cannot enter a command
before the computer makes its
move.
1. When it is your turn to move,
repeatedly press NEXT PIECE or
LAST PIECE to select the piece
you want to move. The piece
alternately flashes on its FROM
square and one of its legal desti-
nations.
2. If the move that appears is not
the one you want, repeatedly
press
NEXT MOVE or LAST MOVE
to select other legal moves for
the piece.
Notes:
• If the next move you make will
capture one of your oppo-
nent’s pieces, press LAST
MOVE instead of NEXT MOVE
to move more quickly.
• To select a different piece after
you pressed LAST MOVE or
NEXT MOVE in this step,
repeat Steps 1 and 2.
3. Press OPTION/MOVE to make
your move. flashes to indi-
cate it is the computer’s turn, and
the game timer counts up while
the computer plans its move.
Notes:
• The computer might respond
instantly, so you might not see
flash and the game timer
count up.
• If you do not want to wait for
the computer to calculate its
move, you can press
OPTIONS/MOVE
to force the
computer to make a move.
• To select a different move
after you pressed OPTIONS/
MOVE in this step, you must
wait for the computer to make
its move, then press /
UNDO to take back the com-
puter’s move. Press /
UNDO again to take back your
previous move.
4. Once the computer has deter-
mined its move, the piece it
selects to move flashes on its
FROM square and TO square
alternatively, then stops on its TO
square. The computer displays

10 Basic Operation
to indicate it is your turn to
move, and the game timer con-
tinues to count up.
HAVING THE COMPUTER
SUGGEST A MOVE
The computer can suggest moves for
you during a game.
To view the move the computer sug-
gests for you, press SETUP +/HINT
during your turn. The computer dis-
plays the move it suggests. Press
OPTIONS/MOVE to make the move the
computer suggested, or repeatedly
press
NEXT PIECE or LAST PIECE to
select another move and continue the
game.
Note: The game timer continues to
count up while you press SETUP +/
HINT.
CHANGING COLORS
WITH THE COMPUTER
The computer is set so you play the
white pieces and it plays the black
pieces. You can change colors with
the computer so it plays the white
pieces and you play the black pieces.
To change colors with the comput-
er before you begin a game,
press OPTIONS/MOVE. To change
colors with the computer during a
game, press /UNDO when it is
your turn to move. The game timer
counts up and flashes while
the computer takes back its last
move. Then you can take over and
enter moves for the computer's side
and continue to play the same game.
SHOWING ALL LEGAL
MOVES
The computer can show each legal
move you can make during a game.
1. Press NEW GAME/HELP. Edý >;BF
Edý >;BFEdý >;BF
Edý >;BF
appears.
2. Press CLEAR/ON to return to the
current game.
3. When it is your turn to move,
repeatedly press NEXT PIECE or
LAST PIECE to select the piece
you want to move. <hEC
<hEC<hEC
<hEC appears,
the piece you selected flashes on
its FROM square, and small
piece icons flash on any squares
that are legal destinations for the
piece you selected.
4. If the move that appears is not
the one you want, repeatedly
press
NEXT MOVE or LAST MOVE
to select other legal moves for
the piece.
5. Press OPTION/MOVE to make
your move.
To turn off legal move display, repeat
Steps 1–5, repeatedly pressing NEW
GAME/HELP in Step 1 until Ed
EdEd
Ed disap-
pears.

11
Basic Operation
DISPLAYING GAME
INFORMATION
Elapsed Time Since Current
Game Started
The computer normally shows the
elapsed time for each move during a
game. Follow these steps to set the
computer so it shows the elapsed
time since it started the current game.
1. Press SHIFT. C
CC
CEZ
EZEZ
EZ;
;;
;appears.
2. Repeatedly press OPTIONS/
MOVE until J
JJ
JEj
EjEj
Ej7B
7B7B
7B appears.
3. Repeatedly press NEXT PIECE or
LAST PIECE until Ed
EdEd
Ed appears (the
computer displays the elapsed
time since it started the current
game) or disappears (the com-
puter displays the elapsed time
for each move).
4. Press CLEAR/ON to start the
game.
Move Score
The computer normally shows the se-
quence of the current move. Follow
these steps to set the computer so it
shows a score based on the comput-
er’s evaluation of the current move
you are making.
1. Press SHIFT. C
CC
CEZ
EZEZ
EZ;
;;
;appears.
2. Repeatedly press OPTIONS/
MOVE until I9Eh;
I9Eh;I9Eh;
I9Eh; appears.
3. Repeatedly press NEXT PIECE or
LAST PIECE until Ed
EdEd
Ed appears (the
computer displays the move
score) or disappears (the com-
puter displays the sequence of
the current move).
4. Press CLEAR/ON to start or
resume the game.
Note: A move score prefaced with a ¶
¶¶
¶
means that the computer is winning
the current game.
Rotating Game Information
You can set the computer so it contin-
uously shows the current move score,
depth of search (number of moves
the computer is thinking ahead), the
best move the computer considered
playing, and the elapsed time since it
started the current game.
Note: The computer shows rotating
game information only when it is set
to Level 5 or above.
1. Press SHIFT. CEZ;
CEZ;CEZ;
CEZ; appears.
2. Repeatedly press OPTIONS/
MOVE until ?d<E
?d<E?d<E
?d<E appears.
3. Repeatedly press NEXT PIECE or
LAST PIECE until Ed
EdEd
Ed appears (the
computer displays rotating game
information) or disappears (the
computer does not display rotat-
ing game information).
4. Press CLEAR/ON to start or
resume the game.

12 Basic Operation
GAME INDICATORS
Checkmate
Whenever a checkmate situation oc-
curs on the board, the computer
sounds a beep. If you checkmated
the computer, BEI;
BEI;BEI;
BEI; appears. If the
computer checkmated you, !
!!
!and
C7
C7C7
C7ýJ;
ýJ;ýJ;
ýJ; appear.
To start another game, press SHIFT
then
NEW GAME/HELP.
Check
Whenever a check situation occurs
on the board, 9>;9
9>;99>;9
9>;9 appears for a few
seconds, then !
!!
!appears and the
game timer continues to count up, in-
dicating that a king is in check.
Draw
When the computer detects the con-
ditions for a draw game, :h7M
:h7M:h7M
:h7M ap-
pears. :h7M
:h7M:h7M
:h7M appears if there is a
three-time repetition of position, if no
pawn has been moved, or no pieces
have been captured for 50 moves.
You can ignore the draw indicator and
continue the game. If a stalemate is
reached, Ij7B;
Ij7B;Ij7B;
Ij7B; (stalemate) appears.
Capture
é
éééappears during a game when one of
your pieces is threatened with cap-
ture.
Rating
When eý
eýeý
eý appears, the computer can
rate the game you are playing.
1. Press SHIFT then RATING/OFF.
The current rating appears.
2. Repeatedly press OPTIONS/
MOVE until M_d
M_dM_d
M_d appears (if you
won the game), .BEI;
BEI;BEI;
BEI; appears (if
you lost the game), or :h7M
:h7M:h7M
:h7M
appears (if you drew the game).
3. Press RATING/OFF. Your new rat-
ing appears.
4. Press CLEAR/ON to return to the
game.
CHESS PLAY LEVELS
When you play against the computer,
you can select a level that matches
your skill level. There are 73 different
levels (each described under “Choos-
ing a Level” on Page 13).
Changing the Level
Note: You can only change the level
when it is your turn to play.
1. Press SETUP –/LEVEL.
2. Repeatedly press NEXT PIECE or
LAST PIECE (to move one at a
time through the level list) or
NEXT MOVE or LAST MOVE (to
move ten at a time through the
level list) until the level you want
appears.

13
Basic Operation
3. Press CLEAR/ON to start the
game.
Choosing a Level
Each level allows your computer to
think for different periods of time
(tournament players call these peri-
ods “time controls”). The longer your
computer thinks, the better moves it
makes. Generally the first four levels
are for beginners while the remaining
levels are for more accomplished
players.
If you are a beginner, start out with
the beginner levels (L01 through
L04). The computer purposely makes
mistakes on these levels so you can
beat the computer and learn while
you play. The beginner levels restrict
the computer's search depth, result-
ing in weaker play.
If you are an advanced player, try the
advanced levels (L05 through L72) or
the infinite level (L73).
Note: When you set the level, keep in
mind that the more time the computer
has to think about its moves, the bet-
ter it plays.
Beginner Levels (L01–L04)
The four beginner levels are designed
especially for beginning players. The
computer weakens its play by inten-
tionally ignoring data. You can see
the computer leave pieces unguarded
and force the loss of material by
throwing away pieces.
Level L1 is the easiest. The comput-
er’s playing strength increases gradu-
ally up through L4.
Advanced Levels (L05–L72)
The 68 advanced levels let you con-
trol the computer's strength by limiting
the time it has to think for each move.
As the levels go up, the computer be-
comes stronger — the more time you
give the computer to think, the better
it plays.
Note: The time-per-move figure is the
average time the computer takes to
make each move. During the opening
moves of a game, the computer might
move more quickly.
Level Time Per Move
L01 4 Seconds
L02 8 Seconds
L03 12 Seconds
L04 16 Seconds
Level Time Per Move
L05 5 Seconds
L06 6 Seconds
L07 7 Seconds
L08 8 Seconds
L09 9 Seconds
L10 10 Seconds
L11 11 Seconds
L12 12 Seconds
L13 13 Seconds
L14 14 Seconds

14 Basic Operation
Infinite Level (L73)
The infinite level lets the computer
search for a move as long as it can
L15 15 Seconds
L16 17 Seconds
L17 19 Seconds
L18 21 Seconds
L19 23 Seconds
L20 25 Seconds
L21 27 Seconds
L22 29 Seconds
L23 31 Seconds
L24 33 Seconds
L25 35 Seconds
L26 37 Seconds
L27 39 Seconds
L28 41 Seconds
L29 43 Seconds
L30 45 Seconds
L31 47 Seconds
L32 49 Seconds
L33 51 Seconds
L34 53 Seconds
L35 55 Seconds
L36 57 Seconds
L37 59 Seconds
L38 1 Minute 1 Second
L39 1 Minute 3 Seconds
L40 1 Minute 5 Seconds
L41 1 Minute 7 Seconds
L42 1 Minute 9 Seconds
L43 1 Minute 11 Seconds
L44 1 Minute 13 Seconds
L45 1 Minute 15 Seconds
Level Time Per Move
L46 1 Minute 17 Seconds
L47 1 Minute 19 Seconds
L48 1 Minute 21 Seconds
L49 1 Minute 23 Seconds
L50 1 Minute 25 Seconds
L51 1 Minute 27 Seconds
L52 1 Minute 29 Seconds
L53 1 Minute 31 Seconds
L54 1 Minute 33 Seconds
L55 1 Minute 35 Seconds
L56 1 Minute 37 Seconds
L57 1 Minute 39 Seconds
L58 1 Minute 41 Seconds
L59 1 Minute 43 Seconds
L60 1 Minute 45 Seconds
L61 1 Minute 47 Seconds
L62 1 Minute 49 Seconds
L63 1 Minute 51 Seconds
L64 1 Minute 53 Seconds
L65 1 Minute 55 Seconds
L66 1 Minute 57 Seconds
L67 1 Minute 59 Seconds
L68 2 Minutes 1 Second
L69 2 Minutes 3 Seconds
L70 2 Minutes 5 Seconds
L71 2 Minutes 7 Seconds
L72 2 Minutes 9 Seconds
Level Time Per Move

15
Advanced Chess Functions
find any way to checkmate an oppo-
nent.
Setting a Level Mode
You can set the computer to change
the way it plays within a level. In
fast
level mode, the computer makes
more selective searches and looks
more deeply into its position even if
some tactical moves are missing. In
random
level mode, the computer
randomly chooses between two good
moves, letting you practice and play
against different responses.
Notes:
• The computer’s thinking time
might vary if you select a level
mode.
• You can set a level mode at any
level.
1. Press SETUP –/LEVEL.
2. Repeatedly press OPTIONS/
MOVE
until
<7IJ
<7IJ<7IJ
<7IJ appears (to set
the fast level mode) or until h7d
h7dh7d
h7d:
::
:
appears (to set the random level
mode).
3. Repeatedly press NEXT PIECE or
LAST PIECE until Ed
EdEd
Ed appears (the
computer plays in the level mode
you set) or disappears (the com-
puter does not play in the level
mode you set).
4. Press CLEAR/ON to start the
game.
ˆ
Advanced Chess Functions
UNDOING MOVES
This function lets you take back any
move made by you or the computer
after the move has been completed.
Notes:
• You can take back as many as
26 half-moves during a game.
• To take back your own move, you
must first let the computer make
a counter-move, then take back
the computer's counter-move
first.
To undo a move, press /UNDO
when it is your turn to move. The
computer takes back its last move.
Press /UNDO again when it is
the computer’s turn to move. The
computer takes back your previous
move.

16 Advanced Chess Functions
SELECTING AN
OPPONENT
The computer lets you select the op-
ponent you want to play. You can
play against the computer, against
another person, or have the computer
play itself.
Note: You can select an opponent at
any time.
The computer is normally set so you
play against it. Follow these steps to
set the computer so you can play
against another person or have the
computer play itself.
1. Press SHIFT. CEZ;
CEZ;CEZ;
CEZ; appears.
2. Repeatedly press OPTIONS/
MOVE until FB7Oh
FB7OhFB7Oh
FB7Oh appears.
3. Repeatedly press NEXT PIECE or
LAST PIECE until &
&&
&appears (to
have the computer play itself), '
''
'
appears (to play against the
computer), or (
((
(appears (to play
against another person).
4. Press CLEAR/ON, then press
OPTIONS/MOVE twice if you
selected
&
&&
&in Step 3. If you
selected
(
((
(in Step 3, 3
33
3appears.
5. Press OPTIONS/MOVE at any
time to stop auto play.
USING OPENING BOOKS
The computer’s opening book memo-
ry contains 34 major opening strate-
gies so the computer can respond
more rapidly during a game’s opening
moves.
You can select any of the following
opening books.
Number Opening Book Name
1 Ruy Lopez,
Exchange Variation
2 Ruy Lopez,
Closed Defense
3 Ruy Lopez, Open Defense
4 Ruy Lopez,
Archangel Defense
5 Gluoco Piano
6ScotchGame
7 Four Knights
8 Petroff Defense
9 Vienna Game
10 Sicilian, Classical Defense
11 Sicilian,
Accelerated Defense
12 Sicilian, Rossolimo Attack
13 Sicilian, Dragon Variation
14 Sicilian,
Scheveningen Variation
15 Sicilian, Najdorf Variation
16 Sicilian, Moscow Variation
17 Caro-Kann Defense
18 Panov-Botvinnik Attack
19 French Defense,
Winawer Variation
20 French Defense,
Classical Defense

17
Advanced Chess Functions
You can influence the computer’s
play by selecting any of these op-
tions. When you select an option, the
computer selects positions more of-
ten from that option.
Note: You cannot select an opening
book during a game.
1. Press SHIFT. CEZ;
CEZ;CEZ;
CEZ; appears.
2. Repeatedly press OPTIONS/
MOVE until EF;d
EF;dEF;d
EF;d appears.
3. Repeatedly press NEXT PIECE or
LAST PIECE until the number for
the opening book you selected
appears.
4. Press CLEAR/ON to start the
game.
The computer beeps if a move you
make is not the correct opening move
for the book you selected. To learn
the correct move, press SETUP +/HINT
during your turn. The computer dis-
plays the correct move.
EF;d
EF;dEF;d
EF;d appears when the computer
makes a move in the opening book
you selected, to indicate that there is
another opening move. If EF;d
EF;dEF;d
EF;d does
not appear, you can continue the nor-
mal play.
Note: If you want to make your own
move at the beginning of the game,
set the computer to play against an-
other person (see “Selecting an Op-
ponent” on Page 16), enter moves for
both sides until you reach the opening
position you want to practice, then set
the computer so you are playing
against the computer.
PLAYING GREAT GAMES
The computer shows you the moves
from 16 world-class games and tests
you on your knowledge of those
games.
21 French Defense,
McCutcheon Variation
22 French Defense,
Tarrasch Variation
23 Queen’s Gambit, Accepted
24 Queen’s Gambit, Declined
25 Queen’s Gambit,
Semi-Slav Defense
26 Queen’s Gambit,
Tarrasch Defense
27 Queen’s Gambit,
Slav Defense
28 Nimzo-Indian Defense,
Rubenstein Variation
29 Nimzo-Indian Defense,
Classical Variation
30 Queen’s Indian Defense
31 Queen’s Indian Defense,
Petrosian Variation
32 Bogo-Indian Defense
33 Gruenfeld Defense
34 King’s Indian Defense
Number Opening Book Name

18 Advanced Chess Functions
You can select any of the following
great games.
Note: You cannot select a great
game during a game.
1. Press SHIFT. CEZ;
CEZ;CEZ;
CEZ; appears.
2. Repeatedly press OPTIONS/
MOVE until =7C;
=7C;=7C;
=7C; appears.
3. Repeatedly press NEXT PIECE or
LAST PIECE until the number for
the great game you selected
appears. The first two moves of
the great game you selected
appear.
4. Press CLEAR/ON to start the
game.
As you play the great game you se-
lected, the computer displays a score
showing how well you know the
moves in the game.
Number Name
1 Adolf Anderssen vs.
Lionel Kieseritsky,
London, 1851
2 Adolf Anderssen vs.
J. Dufresne,
Berlin, 1852
3 Paul Morphy vs.
Duke Karl & Count Isouard,
Paris, 1858
4 Wilhelm Steinitz vs.
Kurt von Bardeleben,
Hastings, 1895
5 Alexander Alekhine vs.
O. Tenner,
Cologne, 1911
6 Gaudersen vs.
Paul,
Melbourne, 1928
7 Edward Lasker vs.
George Thormas,
London, 1910
8 Wilhelm Steinitz vs.
A. Mongredien,
London, 1862
9 Aaron Nimzovich vs.
S. Alapin,
Riga, 1913
10 Jose Capablanca vs.
Herman Steiner,
Los Angeles, 1933
11 Mikhall Botvinnlk vs.
Paul Keres,
The Hague, 1948
12 J. Banas vs.
P. Lukacs,
Trnava, 1986
13 Anatoly Karpov vs.
Victor Korchnoi,
Moscow, 1974
14 Boris Spassky vs.
Tigran Petrosian,
Moscow, 1969
15 Robert Fischer vs.
Reuben Fine,
New York, 1963
16 Lajos Portisch vs.
Johannessen,
Havana, 1966
Number Name

19
Advanced Chess Functions
Most moves start with 4 bonus points
but some brilliant moves start with 8
points.
If you don’t enter the correct great
game move, the computer sounds an
error beep and the bonus points you
have accumulated reduce by half. If
you lose all your bonus points, the
computer shows the correct move.
PLAYING MATE-IN-
PROBLEM GAMES
The computer shows you the moves
from 31 mate-in-2-problem games
and one mate-in-3-problem game.
Note: You cannot select a mate-in-
problem game during a game.
1. Press SHIFT. CEZ;
CEZ;CEZ;
CEZ; appears.
2. Repeatedly press OPTIONS/
MOVE until C7J;
C7J;C7J;
C7J; appears.
3. Repeatedly press NEXT PIECE or
LAST PIECE to select a mate-
in-problem game. The pieces
and their positions in each game
appear.
4. Press CLEAR/ON to start the
game.
5. If you cannot find the solution for
the next move, press OPTIONS/
MOVE twice to let the computer
enter the move.
USING TEACHING MODES
Your computer has eight built-in
teaching modes that you can use to
help you learn how to checkmate an
opponent’s king. Your computer in-
cludes the following teaching modes.
• Kings, pawns
• Kings, pawns, knights
• Kings, pawns, bishops
• Kings, pawns, rooks
• Kings, pawns, queens
• Kings, white bishops
• Kings, white rooks
• Kings, white queen
In the teaching mode, the computer
sets up the display to simulate a real
game where both the black and white
kings and other pieces are in their
starting positions. This lets you play a
game using only the pieces you set
up, making it easy to see only the
strengths and weaknesses of the
piece you selected without being dis-
tracted by other pieces.
Note: You cannot select a teaching
mode during a game.
1. Press SHIFT. CEZ;
CEZ;CEZ;
CEZ; appears.
2. Repeatedly press OPTIONS/
MOVE until Jh7?d
Jh7?dJh7?d
Jh7?d appears.

20 Advanced Chess Functions
3. Repeatedly press NEXT PIECE or
LAST PIECE until the teaching
mode you want appears.
4. Press CLEAR/ON to start the
game.
USING PROBLEM SETUP
You can use the problem setup mode
to add a piece, remove a piece, or
change the position of any piece on
the board. You can use the problem
setup mode at any time.
Removing a Piece
1. Press SHIFT. CEZ;
CEZ;CEZ;
CEZ; appears.
2. Press SETUP –/LEVEL or SETUP
+/HINT. I;jKF
I;jKFI;jKF
I;jKF appears.
3. Repeatedly press NEXT PIECE,
LAST PIECE,NEXT MOVE, and
LAST MOVE to move the small
piece icon to the square occu-
pied by the piece you want to
remove. The piece you selected
is replaced on its FROM square
by the small piece icon.
4. Press OPTIONS/MOVE.
5. Press CLEAR/ON to resume the
game.
Adding a Piece
1. Press SHIFT. CEZ;
CEZ;CEZ;
CEZ; appears.
2. Press SETUP –/LEVEL or SETUP
+/HINT. I;jKF
I;jKFI;jKF
I;jKF appears.
3. Repeatedly press NEXT PIECE,
LAST PIECE,NEXT MOVE, and
LAST MOVE to move the small
piece icon to the square where
you want to add the piece.
4. Repeatedly press SETUP –/
LEVEL or SETUP +/HINT to select
the piece you want to add. When
the piece you want to add
appears, press OPTIONS/MOVE
to confirm it. Then press CLEAR/
ON to resume.
Changing a Piece
1. Press SHIFT. CEZ;
CEZ;CEZ;
CEZ; appears.
2. Press SETUP –/LEVEL or SETUP
+/HINT. I;jKF
I;jKFI;jKF
I;jKF appears.
3. Repeatedly press NEXT PIECE,
LAST PIECE,NEXT MOVE, and
LAST MOVE to move the small
piece icon to the square occu-
pied by the piece you want to
change. The piece you selected
is replaced on its FROM square
by the small piece icon.
4. Repeatedly press SETUP +/HINT
or SETUP –/LEVEL to select the
new piece. When the piece you
want to change appears, press
OPTIONS/MOVE to confirm it.
Then press CLEAR/ON to
resume.