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3.6 Practice Levels
PRACTICE LEVELS
Square C1 ............................ 1 second
Square C2 ............................ 2 seconds
Square C3 ............................ 5 seconds
Square C4 .......................... 10 seconds
Square C5 .......................... 30 seconds
Square C6 ............................ 1 minute
Square C7 ............................ 2 minutes
Square C8 ............................ 3 minutes
The Practice Levels offer you a great chance to sharpen your skills!
On these levels, the computer plays for captures and checks as much
as possible. The program may intentionally overlook traps in order to
encourage you to play for traps and threats. You will also notice the
computer positioning its pieces so they may easily be attacked.
3.7 Tactical Levels
TACTICAL LEVELS
Square D1 ............................ 1 second
Square D2 ............................ 2 seconds
Square D3 ............................ 5 seconds
Square D4 .......................... 10 seconds
Square D5 .......................... 30 seconds
Square D6 ............................ 1 minute
Square D7 ............................ 2 minutes
Square D8 ............................ 3 minutes
Although the Tactical Levels have the same search times as the
Normal Playing Levels, the computer plays differently here since it
uses a different search method. On the Normal Playing Levels, a
Selective Search algorithm is used. This allows the computer to see
combinations that would otherwise take much longer to compute. On
the Tactical Levels, the computer switches to a powerful Brute Force
Search—which helps minimize the risk of an occasional oversight.
3.8 Fixed Depth Levels
FIXED DEPTH LEVELS
Square E1 ................................. 1 ply
Square E2 ................................. 2 ply
Square E3 ................................. 3 ply
Square E4 ................................. 4 ply
AVERAGE TIME PER MOVE
AVERAGE TIME PER MOVE
SEARCH DEPTH
Square E5 ................................. 5 ply
Square E6 ................................. 6 ply
Square E7 ................................. 7 ply
Square E8 ................................. 8 ply
On the Fixed Depth Levels, the computer's search depth is limited
to a certain number of ply. A ply is an individual move, or a move for
either side. As an example, on Level E1, the computer only searches to
a depth of one ply—it only looks ahead one individual move. This
results in weaker play, giving beginners a better chance of beating the
computer. These levels start out easy and get progressively more
difficult—as you conquer each level, go on to the next!
3.9 Quiet Closed Game Levels
QUIET CLOSED GAME LEVELS
Square F1 ............................ 1 second
Square F2 ............................ 2 seconds
Square F3 ............................ 5 seconds
Square F4 .......................... 10 seconds
Square F5 .......................... 30 seconds
Square F6 ............................ 1 minute
Square F7 ............................ 2 minutes
Square F8 ............................ 3 minutes
On these levels, the computer gives preference to a quiet, passive
style of play. Here, you will see the computer exchanging pieces as
much as possible, in an effort to avoid complications and simplify the
board position. With this type of play, the program also avoids attacks
and keeps positions closed whenever possible.
3.10 Aggressive Game Levels
AGGRESSIVE GAME LEVELS
Square G1 ............................ 1 second
Square G2 ............................ 2 seconds
Square G3 ............................ 5 seconds
Square G4 .......................... 10 seconds
Square G5 .......................... 30 seconds
Square G6 ............................ 1 minute
Square G7 ............................ 2 minutes
Square G8 ............................ 3 minutes
In direct contrast to the levels described previously in Section 3.9,
on Levels G1-G8, the computer is much more active and plays more
10
AVERAGE TIME PER MOVE
AVERAGE TIME PER MOVE
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