Excalibur 712 Operating Manual page 7

number of moves to mate the program
will search. NONE NONE will appear if no mate
is found.
MATE 1 MATE 2 MATE 3 MATE 4
MATE 5 MATE 6 MATE 7 MATE 8
Note: You can only change the level
while it is your turn to play.
Computers can sometimes
"lockup" due to static discharge
or other electrical disturbances.
If this should happen, use a slim,
pointed object to press the
button marked "ACL."
Book Opening Trainer
IVAN makes it easy for you to learn the
same openings that world chess champi-
ons play! At the beginning of a game, you
may choose to learn one of 32 popular
book openings—ways to begin the
game—used by chess masters. Press
OPTIONS repeatedly to display OPEN
and then press the t or the u key to
select the number of the opening you
want to learn. (See list on right.) Press the
CLEAR key to return to normal play.
Now play a move. Ivan will tell you if
your move is not the correct opening
move. To learn the correct move press
CLEAR and then press HINT. When the
computer comes back with its move, you
will briefly see the word OPEN
screen if you have another opening move
to make. If the word OPEN
appear, you may continue normal play.
You have completed the training for that
opening line.
The names of the openings are:
OPEN,
OPEN on the
OPEN does not
1. Ruy Lopez, Open Defense
2. Ruy Lopez, Zaitsev Defense
3. Ruy Lopez, Exchange
4. Scotch Game
5. Scotch Four Knights
6. Giuoco Piano
7. Two Knights Defense
8. Four Knights
9. Petroff's Defense
10. Sicilian Alapin Variation
11. Sicilian, Najdorf Variation
12. Sicilian, Dragon Variation
13. Sicilian, Keres Attack
14. Caro-Kann Defense
15. Panov-Botvinnik Attack
16. Caro-Kann Excahnge Variation
17. Queen's Gambit Declined
18. Lasker Defense, Queen Gambit Declind
19. Queen Gambit Declined Exchange Var.
20. Slav Defense
21. Queen's Gambit Accepted
22. Nimzo-Indian Defense, Classical Var.
23. Nimzo-Indian Defense, Rubinstein Var.
24. Semi-Slav Defense
25. Queen's Indian Defense
26. Queen's Indian Defense, Petrosian Var.
27. Bogolubow Indian Defense
28. Catalan
29. Gruenfeld Defense
30. King's Indian Defense
31. Modern Benoni Defense
32. Benko Gambit
The moves and explanations of these famous
openings are given in many books on chess.
Entering Your Own Opening
IVAN also allows you to set up any book
opening you want—or even an opening
you invent—to practice. Press MULTI-
MOVE, then make moves for both sides
until the opening position you want to
practice is reached. Now press MULT-
MOVE again. Press CLEAR and play
against the computer in this position.
7