Go Partner 1680X - Mate Finder Level; Practical Levels; Brute Force Levels; Fixed Depth Search Levels

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