The Greenblatt CHESS program runs under control of the DEC
time-sharing monitor for the PDP-10. This copy comes to you from
TYMSHARE, Intergalactic Computer Operations, California, USA.

To start the program type: "R GAM:CHESS"

The following commands are relevant:

PB	Play Black - Instructs CHESS to play on behalf  of black
PW	Play White - Same for white
PS	Play Self - CHESS will make alternate white and black moves

PG	Print Game - Print the entire game on TTY
BD	Print Board - Display the current board position on TTY

SETW=	Print the current width of move examination on TTY
	the first number is the number of plausible moves
	considered on the first ply, the second number is
	the number of plausible moves considered on the
	second ply, etc.  The last number applys to the
	corresponding ply and all succeeding plies.

SETD=	Print the current depth of move examination

SETW ARG1 ARG2 ARG3 ...	Sets the width of plausible moves
	as explained above.
	SETW 7 7 6 is the usual (hacker mode) setting;
	SETW 15 15 9 9 7 is the tournament mode setting

SETD ARG	Sets the depth of move examination
	SETD 4 is the usual (hacker mode) setting;
	SETD 6 is the tournament mode setting

M	Move - CHESS makes one move.  if in one of the
	automatic play modes (PB,PW), CHESS will then
	make its own move.

U	Unmove - Take back the last move (either CHESS'
	or the opponent's)

RESET	Reset the game to the beginning position

Moves are typed using the pseudo-standard chess notation.
The full form of a move might be:

	KNP/KN2-KN4	;King's knight's pawn on
			;King's knight 2 moves to
			;King's knight 4

In all moves, -(minus sign) or  (space) means an ordinary move,
while X or * indicates a capture.

Moves may be abbreviated to any portion of the above notation which
is sufficient to specify the move without ambiguity.  For example,
the above move could be:

	KNP-KN4
	KNP-N4
	P/KN2-KN4
	P/KN2-N4
	P/N2-KN4
	P-KN4
But could not usually be:
	P-N4
	P/N2-N4

Since these latter two could apply to either king's knight's pawn
or queen's knight's pawn.  Note that these two would be adequate if
the queen's knight's pawn had previously been moved to or past QN4.

To castle to king-side, type O-O
To castle to queen-side, type O-O-O

Games typed out by CHESS preface each move with the letter B(Black)
or the letter W(White); this notation should not be used for
typein.  CHESS uses only a portion of the full format for its own
typeout.

Pieces are designated as follows:
KING-K,QUEEN-Q,BISHOP-B,KNIGHT-N,CASTLE OR ROOK-R,PAWN-P

As an example, suppose you wanted to play white, and play pawn to
king four as your first move. proceed as follows:

.R GAM:CHESS	;(Run the chess program)
_PB		;(This tells CHESS to play black)
_P K4		;(Your move)
B KP/K2-K4	;(CHESS' response)
_		;(CHESS is ready for your next move)

	<End of HLP:CHESS.HLP - 810312/SO>
