3 Playing
3.1 User Moves
You enter moves by giving the from-square and the to-square of a move, followed by the
a
key. The square keys change their meaning (rank / file) depending on whether a rank
or a file is expected.
For example, to start a game with e2-e4, you type E5 B2 E5 D4
a
. With the first key, a
file is expected, so E5 evaluates to "E". The following key means a rank, in this case the
second rank, so B2 gives "2".
There is no difference between entering a piece or a pawn move. So if you instead want to
begin the game with Ng1-f3, you enter G7 A1 F6 C3
a
.
Taking a piece does not require a special markup. The CT800 knows that the destination
square is occupied so that the move is automatically recognised as capture. This holds
also for taking a pawn "en passant".
Castling is treated as a pure king move e.g. from e1 to g1. The rook position will be
updated automatically.
Promoting a pawn means entering the from-square, the to-square and optionally the
promotion piece:
•
Queen:
A1
•
Rook:
B2
•
Bishop:
C3
•
Knight:
D4
If you do not enter a specific promotion piece, a queen will be selected automatically.
Imagine that there is a black pawn on c2 and a white rook on d1. Black wants to take the
rook and promote the pawn to a knight. Then the sequence is C3 B2 D4 A1 D4
a
.
If you have made a typo before pressing the
a
key and want to correct it, press the
r
key. You can start over entering your move.
The CT800 checks whether an entered move conforms to the chess rules and will refuse
invalid moves.
After you have entered a valid move, the coordinate move notation will automatically be
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