CXG Sphinx, Руководство пользователя

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In connection with setting up positions, there are a few further points to
be noted:
(a) CASTLING AND EN PASSANT
If a king or rook has been placed on the board in the way we have just
described, there can be no castling with that piece. To create king's side,
press
NEW GAME before SET-UP- then leave the king and king's rook
undisturbed on their starting squares, while other pieces are removed and
reinserted as necessary.
After a position has been set up, the next move cannot be a pawn capture
en passant. To create a position where such a capture is legal, set up the
immediately preceding position and then make the move which permits
the capture.
(b) GAME RECORD
Once you press the SET -UP key, the clocks are set to zero and the
computer's memory of
all
moves that were played previously is erased.
Those moves cannot subsequently be retracted with the TAKE BACK key.
(c) ILLEGAL POSITIONS
Before taking the computer out of SET -UP mode, you should make sure
that the position you have constructed is legal. There should not be too
many pieces of the type - for example,
if there are eight white pawns on
the board, there cannot be two white queens. Each side must, of course,
have one and only one king, and the king of the player who is not to move
must not be in check. There must be no pawns on the first or eighth rank.
If you do try to make the computer play from an illegal position, don't be
surprised if the results are crazy!
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