zero. On levels where time is not part of the competition, the clock counts upwards to
show the total elapsed time.
• If you take back while playing against the clock, the clock does not reverse for each take
back. It simply stops until you start making a move again.
2.2 Capturing and Special Moves
a. CAPTURES: To capture, press down lightly on the piece you want to move, take the
captured piece off the board, and press your piece on the square of the captured piece.
b. EN PASSANT: In an en passant capture, the computer reminds you to remove the
captured pawn from the board by displaying the pawn's location. Press down on the
captured pawn before removing it from the board. For an example, see Figures 2-1a, b,
and c.
c. PAWN PROMOTION AND UNDERPROMOTION: When you promote a pawn, first press
your pawn down on its from square, as usual. The computer displays your from square
and the Queen symbol (alternately with the clock display). As soon as you press your
pawn down on the to square, it automatically becomes a Queen. Remember to change
your piece on the board! If you wish to underpromote your pawn to a Rook, Bishop, or
Knight, simply press the appropriate Piece Symbol Key between pressing the from and
to squares. When the computer promotes a pawn, it will show its from and to squares
as usual. After you press its from square, the display indicates the promotion piece type
by showing the piece symbol and the to square. Press down on the to square with the
indicated new piece to complete the computer's promotion move.
d. CASTLING: The computer automatically recognizes castling after the King is moved.
After you have pressed the King down on its from and to squares, the computer dis-
plays the Rook's from square. Press down on this square, and the computer then
displays the Rook symbol, along with the square the Rook should move to. Press down
on the Rook's to square to complete the move (see Figure 2-2).
2.3 Illegal Moves
Your computer will never accept an illegal move. If you attempt an illegal move, the com-
puter gives a low tone error 'beep' and the display keeps showing the from square. Press on
that square to clear the illegal move, and then move again.
If you should move the computer's piece incorrectly, you will also hear an error 'beep'. This
11