CHESSLIBRARY BACKGROUND

This program is an opening library, which consists of about 1000 opening
variations.
This program is for reference only, there are no quizzes or questions 
involved.
You can become familiar with a large number of opening lines by
playing through them forwards and backwards.

The openings in this opening library are classified into the following
3 main categories:

Opengames (starting with e2e4 e7e5)etc.
Halfopen games (starting with e2e4 then a move other than e7e5.)
Closed games (starting with a move other than e2e4.)

These 3 categories are further subdivided into the 16 categories which
are presented in the Openings menu.

ADDING YOUR OWN VARIATIONS 
You can modify the existing opening library or create a new one.
You can edit an opening file directly with a text editor, or enter moves
with a mouse, during the program.
To store a line click on SAVE. If you start recording a second line
without saving the first, the first will be discarded.

All openings are stored in the following files:

Ale,Ben,Car,Eng,Fre,Gru,Hop,Kin,Lop,Ope,Pir,Qgd,Qin,Nim,Sil
   etc

Note that the name of the file is generally the first 3 letters of the
opening they are storing.

The chess notation used to store the games in CHESSLIBRARY is a form of
long algebraic. 

Note that the short articles on openings generally use short algebraic.

Every move is 4 digits long, though in a few cases (e.g. castling) a 
space is included. (Kingside casling 0-0 ,queenside castling 000 )

Each move is stored as the square the piece starts from followed by the
square it moves to.
The initial letter of the piece is not stored as is generally the case in
algebraic notation.

Hence a move involving a piece moving from c3 to d5 could be shown as c3d5.

All openings in this program are stored as straight ASCII files. Hence
they can be edited with any text editor.

Each variation is stored as a single row with no spaces between the moves.

 e.g.
f2f3e7e5g2g4d8h4,- 
or
e2e4e7e5g1f3b8c6f1c4f8c50-0 0-0 d2d3,a sample line

Extra opening variations can be typed in at the end of a file.

You might find it useful to copy a line, then edit the end of it.

A file cannot be more than 200 lines long.

Each line must be completed by a comma followed by at least one letter of
text. This allows you to give a name to the variation you have just
stored.

Promotion
There is no provision for promotion, which does not normally happen in an
opening.

En passant
Is recorded normally.

e.g.
If there is a white pawn on e5 and a black pawn has just moved two squares
to d5 
e5d6 
means that this pawn is captured en passant.