# To unbundle, run this file
echo arithmetic.6
sed 's/.//' >arithmetic.6 <<'//GO.SYSIN DD arithmetic.6'
-.TH ARITHMETIC 6 
-.SH NAME
-arithmetic \- provide drill in number facts
-.SH SYNOPSIS
-.B /usr/games/arithmetic
-[
-.B +\-x/
-] [ range ]
-.SH DESCRIPTION
-.I Arithmetic
-types out simple arithmetic problems,
-and waits for an answer to be typed in.
-If the answer is correct,
-it types back "Right!",
-and a new problem.
-If the answer is wrong,
-it replies "What?",
-and waits for another answer.
-Every twenty problems, it publishes
-statistics on correctness and the time required
-to answer.
-.PP
-To quit the program,
-type an interrupt (delete).
-.PP
-The first optional argument determines the kind of problem
-to be generated;
-.B +\-x/
-respectively cause
-addition, subtraction, multiplication, and division
-problems to be generated.
-One or more characters can be given;
-if more than one is given, the different types of
-problems will be mixed in random order; default is
-.B +\-
-.PP
-.I Range
-is a decimal number;
-all addends, subtrahends, differences, multiplicands, divisors,
-and quotients will be less than or equal to the value of
-.IR range .
-Default
-.I range
-is 10.
-.PP
-At the start, all numbers less than or equal to
-.I range
-are equally likely
-to appear.
-If the respondent makes a mistake,
-the numbers in the problem which was missed
-become more likely to reappear.
-.PP
-As a matter of educational philosophy, the program will
-not give correct answers,
-since the learner should, in principle,
-be able to calculate them.
-Thus the program is intended to provide drill for
-someone just past the first learning stage,
-not to teach number facts
-.I de
-.IR novo .
-For almost all users,
-the relevant statistic should be
-time per problem, not percent correct.
//GO.SYSIN DD arithmetic.6
echo backgammon.6
sed 's/.//' >backgammon.6 <<'//GO.SYSIN DD backgammon.6'
-.TH BACKGAMMON 6 
-.SH NAME
-backgammon \- the game
-.SH SYNOPSIS
-.B /usr/games/backgammon
-.SH DESCRIPTION
-This program does what you expect.
-It will ask whether you need instructions.
//GO.SYSIN DD backgammon.6
echo banner.6
sed 's/.//' >banner.6 <<'//GO.SYSIN DD banner.6'
-.TH BANNER 6 
-.SH NAME
-banner \- make long posters
-.SH SYNOPSIS
-.B /usr/games/banner
-.SH DESCRIPTION
-.I Banner
-reads the standard input and
-prints it sideways in huge built-up letters
-on the standard output.
//GO.SYSIN DD banner.6
echo bcd.6
sed 's/.//' >bcd.6 <<'//GO.SYSIN DD bcd.6'
-.TH BCD 6 
-.SH NAME
-bcd, ppt \- convert to antique media
-.SH SYNOPSIS
-.B /usr/games/bcd
-text
-.PP
-.B /usr/games/ppt
-.SH DESCRIPTION
-.I Bcd
-converts the literal
-.I text
-into a form familiar to old-timers.
-.PP
-.I Ppt
-converts the standard input into yet another form.
-.SH "SEE ALSO"
-dd(1)
//GO.SYSIN DD bcd.6
echo bj.6
sed 's/.//' >bj.6 <<'//GO.SYSIN DD bj.6'
-.TH BJ 6 
-.SH NAME
-bj \- the game of black jack
-.SH SYNOPSIS
-.B /usr/games/bj
-.SH DESCRIPTION
-.I Bj
-is a serious attempt at
-simulating the dealer
-in the game of black jack (or twenty-one)
-as might be found in Reno.
-The following rules apply:
-.HP 5
-The bet is $2 every hand.
-.IP
-A player `natural' (black jack) pays $3.
-A dealer natural loses $2.
-Both dealer and player naturals
-is a `push' (no money exchange).
-.IP
-If the dealer has an ace up,
-the player is allowed to make an `insurance'
-bet against the chance of a dealer natural.
-If this bet is not taken, play resumes as normal.
-If the bet is taken, it is a side bet
-where the player wins $2 if the dealer has
-a natural and loses $1 if the dealer does not.
-.IP
-If the player is dealt two cards
-of the same value, he is allowed to
-`double'.
-He is allowed to play two
-hands, each with one of these cards.
-(The bet is doubled also; $2 on each hand.)
-.IP
-If a dealt hand
-has a total of ten or eleven,
-the player may `double down'.
-He may double the bet ($2 to $4)
-and receive exactly one more card on that hand.
-.IP
-Under normal play,
-the player may `hit' (draw a card)
-as long as his total is not over twenty-one.
-If the player `busts' (goes over twenty-one),
-the dealer wins the bet.
-.IP
-When the player `stands' (decides not to hit),
-the dealer hits until he attains
-a total of seventeen or more.
-If the dealer busts, the player wins the bet.
-.IP
-If both player and dealer stand,
-the one with the largest total wins.
-A tie is a push.
-.PP
-The machine deals and keeps score.
-The following questions will be asked at
-appropriate times.
-Each question is
-answered by
-.B y
-followed by a new line for `yes',
-or just new line for `no'.
-.PP
-?		(means, `do you want a hit?')
-.br
-Insurance?
-.br
-Double down?
-.PP
-Every time the deck is shuffled,
-the dealer so states and the `action' (total bet)
-and `standing' (total won or lost)
-is printed.
-To exit, hit the interrupt key (DEL)
-and the action and standing will be printed.
//GO.SYSIN DD bj.6
echo checkers.6
sed 's/.//' >checkers.6 <<'//GO.SYSIN DD checkers.6'
-.TH CHECKERS 6
-.SH NAME
-checkers \- game
-.SH SYNOPSIS
-.B /usr/games/checkers
-.SH DESCRIPTION
-.I Checkers
-uses standard notation for the board:
-.PP
-.ce
-BLACK
-.nf
-.TS
-center, box;
-r|r|r|r|r|r|r|r.
-////	1	////	2	////	3	////	4
-////		////		////		////
-_
-5	////	6	////	7	////	8	////
-	////		////		////		////
-_
-////	9	////	10	////	11	////	12
-////		////		////		////
-_
-13	////	14	////	15	////	16	////
-	////		////		////		////
-_
-////	17	////	18	////	19	////	20
-////		////		////		////
-_
-21	////	22	////	23	////	24	////
-	////		////		////		////
-_
-////	25	////	26	////	27	////	28
-////		////		////		////
-_
-29	////	30	////	31	////	32	////
-	////		////		////		////
-_
-.TE
-.ce
-WHITE
-.fi
-.PP
-Black plays first.
-The program normally plays white.
-To specify a move, name the square moved from
-and the square moved to.
-For multiple jumps name all the squares touched.
-.PP
-.PP
-Certain commands may be given instead of moves:
-.TP \w'reverse\ \ 'u
-reverse
-Reverse roles; the program takes over your pieces.
-.TP
-backup
-Undo the last move for each player.
-.TP
-list
-Print the record of the game.
-.TP
-move
-Let the program select a move for you.
-.TP
-print
-Print a map of the present position.
//GO.SYSIN DD checkers.6
echo chess.6
sed 's/.//' >chess.6 <<'//GO.SYSIN DD chess.6'
-.TH CHESS 6 
-.SH NAME
-chess \- the game of chess
-.SH SYNOPSIS
-.B /usr/games/chess
-.SH DESCRIPTION
-.I Chess
-is a computer program that plays class D chess.
-Moves may be given either in standard (descriptive) notation
-or in algebraic notation.
-The symbol `+' is used to specify check;
-`o-o' and `o-o-o' specify castling.
-To play black, type `first';
-to print the board, type an empty line.
-.PP
-Each move is echoed in the appropriate notation followed by
-the program's reply.
-.SH FILES
-/usr/lib/book		opening `book'
-.SH DIAGNOSTICS
-The most cryptic diagnostic is `eh?' which
-means that the input was syntactically incorrect.
-.SH WARNING
-Over-use of this program
-will cause it to go away.
-.SH BUGS
-Pawns may be promoted only to queens.
//GO.SYSIN DD chess.6
echo ching.6
sed 's/.//' >ching.6 <<'//GO.SYSIN DD ching.6'
-.TH CHING 6 
-.SH NAME
-ching, fortune \- the book of changes and other cookies
-.SH SYNOPSIS
-.B /usr/games/ching
-[ hexagram ]
-.PP
-.B /usr/games/fortune
-.SH DESCRIPTION
-The
-.I "I Ching"
-or
-.I "Book of Changes"
-is an ancient Chinese oracle
-that has been in use for
-centuries
-as a source of wisdom
-and advice.
-.PP
-The text of the
-.I oracle
-(as it is sometimes known)
-consists of sixty-four
-.I hexagrams,
-each symbolized
-by a particular
-arrangement of
-six straight
-(\-\-\-)
-and broken
-(\-\ \-)
-lines.
-These lines
-have values ranging
-from six through nine,
-with the even
-values indicating
-the broken lines.
-.PP
-Each hexagram
-consists of two major sections.
-The
-.B  Judgement
-relates specifically
-to the matter at hand
-(E.g.,
-"It furthers one to have somewhere to go.")
-while the
-.B  Image
-describes
-the general attributes
-of the hexagram
-and how they apply
-to one's own life
-("Thus the superior man
-makes himself strong
-and untiring.").
-.PP
-When any of the lines
-have the values six or nine,
-they are moving lines;
-for each
-there is an appended
-judgement which
-becomes significant.
-Furthermore, the moving lines
-are inherently unstable and
-change into their opposites;
-a second hexagram
-(and thus an additional judgement)
-is formed.
-.PP
-Normally, one consults the oracle
-by fixing the desired question
-firmly in mind
-and then casting a set of changes
-(lines)
-using yarrow\-stalks
-or tossed coins.
-The resulting hexagram
-will be the answer
-to the question.
-.PP
-Using an algorithm
-suggested by S. C. Johnson,
-the Unix
-.IR oracle " simply reads"
-a question
-from the standard input
-(up to an EOF)
-and hashes the individual
-characters
-in combination with the
-time of day, process id
-and any other magic numbers
-which happen to be lying
-around the system.
-The resulting value
-is used as the seed
-of a random number generator
-which drives a simulated
-coin\-toss divination.
-The answer is then piped through
-.BR nroff " for formatting"
-and will appear on the
-standard output.
-.PP
-For those who wish
-to remain steadfast
-in the old traditions,
-the oracle will also accept
-the results of a personal
-divination using,
-for example,
-coins.
-To do this,
-cast the change
-and then type the
-resulting line values
-as an argument.
-.PP
-The impatient modern may prefer to settle for
-Chinese cookies; try
-.I fortune.
-.SH "SEE ALSO"
-It furthers one to see the great man.
-.SH DIAGNOSTICS
-The great prince issues commands,
-.br
-Founds states, vests families with fiefs.
-.br
-Inferior people should not be employed.
-.SH BUGS
-Waiting in the mud
-.br
-Brings about the arrival of the enemy.
-.PP
-If one is not extremely careful,
-.br
-Somebody may come up from behind and strike him.
-.br
-Misfortune.
//GO.SYSIN DD ching.6
echo cubic.6
sed 's/.//' >cubic.6 <<'//GO.SYSIN DD cubic.6'
-.so /usr/man/man6/ttt.6
//GO.SYSIN DD cubic.6
echo maze.6
sed 's/.//' >maze.6 <<'//GO.SYSIN DD maze.6'
-.TH MAZE 6 
-.SH NAME
-maze \- generate a maze problem
-.SH SYNOPSIS
-.B /usr/games/maze/
-.SH DESCRIPTION
-.I Maze
-asks a few questions and then
-prints a maze.
-.SH BUGS
-Some mazes (especially small ones)
-have no solutions.
//GO.SYSIN DD maze.6
echo moo.6
sed 's/.//' >moo.6 <<'//GO.SYSIN DD moo.6'
-.TH MOO 6 
-.SH NAME
-moo \- guessing game
-.SH SYNOPSIS
-.B /usr/games/moo
-.SH DESCRIPTION
-.I Moo
-is a guessing game imported from England.
-The computer picks a number consisting
-of four distinct decimal digits.
-The player guesses four distinct digits
-being scored on each guess.
-A `cow' is a correct digit in an incorrect position.
-A `bull' is a correct digit in a correct position.
-The game continues until the player guesses the number
-(a score of four bulls).
//GO.SYSIN DD moo.6
echo quiz.6
sed 's/.//' >quiz.6 <<'//GO.SYSIN DD quiz.6'
-.TH QUIZ 6 
-.SH NAME
-quiz \- test your knowledge
-.SH SYNOPSIS
-.B /usr/games/quiz
-[
-.B \-i
-file ]
-[
-.B \-t
-] [ category1 category2 ]
-.SH DESCRIPTION
-.I Quiz
-gives associative
-knowledge tests on various subjects.
-It asks items chosen from
-.I category1
-and expects answers from
-.IR category2 .
-If no categories are specified,
-.I quiz
-gives instructions
-and lists the available categories.
-.PP
-.I Quiz
-tells a correct answer whenever you type
-a bare newline.
-At the end of input, upon interrupt,
-or when questions run out,
-.I quiz
-reports a score and terminates.
-.PP
-The
-.B \-t
-flag specifies `tutorial' mode,
-where missed questions are repeated
-later, and material is gradually introduced as you learn.
-.PP
-The
-.B \-i
-flag causes the named file to be substituted for the
-default index file.
-The lines of these files have the  syntax:
-.IP "" 4
-.nf
-.ta \w'alternate 'u
-line	= category newline \(bv category `:' line
-category	= alternate \(bv category `|' alternate
-alternate	= empty \(bv alternate primary
-primary	= character \(bv `[' category `]' \(bv option
-option	= `{' category `}'
-.PP
-.fi
-The first category on each
-line of an index file names an information file.
-The remaining categories specify the order and contents of
-the data in each line of the
-information file.
-Information files have the same syntax.
-Backslash `\\' is used as with
-.IR sh (1)
-to quote syntactically
-significant characters or to insert transparent
-newlines into a line.
-When either a question or its answer is empty,
-.I quiz
-will refrain from asking it.
-.SH FILES
-/usr/games/quiz.k/*
-.SH BUGS
-The construct `a|ab' doesn't work in an information
-file.
-Use `a{b}'.
//GO.SYSIN DD quiz.6
echo reversi.6
sed 's/.//' >reversi.6 <<'//GO.SYSIN DD reversi.6'
-.TH REVERSI 6 
-.SH NAME
-reversi \- a game of dramatic reversals
-.SH SYNOPSIS
-.B /usr/games/reversi
-[ [
-.B \-r
-]
-.I file
-]
-.SH DESCRIPTION
-.I Reversi
-(also known as `friends',
-`Chinese friends' and `Othello')
-is played on an 8\(mu8 board
-using two-sided tokens.
-Each player takes his turn by placing
-a token with his side up in an empty square.
-During the first four turns, players
-may only place tokens in the four central squares
-of the board.
-Subsequently, with each turn, a player
-.I must
-capture one or more
-of his opponent's tokens.
-He does this by placing
-one of his tokens such that
-it and another of his tokens embrace
-a solid line of his opponent's
-horizontally, vertically or diagonally.
-Captured tokens are flipped over
-and thus can be re-captured.
-If a player cannot outflank
-his opponent he forfeits
-his turn.
-The play continues until the
-board is filled or until no more
-outflanking is possible.
-.PP
-In this game,
-your tokens are asterisks
-and the machine's are at-signs.
-You move by typing in the row and column
-at which you want to place your token
-as two digits (1-8),
-optionally separated by blanks or tabs.
-You can also type
-.TP
-.B  c
-to continue the game after hitting break
-(this is only necessary if you interrupt the machine
-while it is deliberating).
-.TP
-.BR g " \fIn"
-to start
-.I reversi
-playing against itself
-for the next
-.IR n ""
-moves
-(or until the break key is hit).
-.TP
-.B  n
-to stop printing the board after each move.
-.TP
-.B  o
-to start it up again.
-.TP
-.B  p
-to print the board regardless.
-.TP
-.B  q
-to quit (without dishonor).
-.TP
-.B  s
-to print the score.
-.PP
-.I Reversi
-also recognizes several commands which are valid only
-at the start of the game, before any moves have been made.
-They are
-.TP
-.B  f
-to let the machine go first.
-.TP
-.BR h " \fIn"
-to ask for a handicap
-of from one to four corner squares.
-If you're
-good, you can give the machine
-a handicap by typing a negative number.
-.TP
-.BR l " \fIn"
-to set the amount of lookahead
-used by the machine in searching for moves.
-Zero means none at all. Four is the default.
-Greater than six means you may fall asleep
-waiting for the machine to move.
-.TP
-.BR t " \fIn"
-to tell
-.I reversi
-that you will only need
-.IR n ""
-seconds
-to consider each move. If you fail to respond in the
-alloted time, you forfeit your turn.
-.PP
-If
-.I reversi
-is given a file name as an argument,
-it will checkpoint the game,
-move by move, by dumping the board onto
-.IR file .
-The
-.B \-r
-option will cause
-.I reversi
-to restart the game from
-.I file
-and continue logging.
//GO.SYSIN DD reversi.6
echo ttt.6
sed 's/.//' >ttt.6 <<'//GO.SYSIN DD ttt.6'
-.TH TTT 6 
-.SH NAME
-ttt, cubic \- tic-tac-toe
-.SH SYNOPSIS
-.B /usr/games/ttt
-.PP
-.B /usr/games/cubic
-.SH DESCRIPTION
-.I Ttt
-is the X and O game popular in the first grade.
-This is a learning program that never makes the same
-mistake twice.
-.PP
-Although it learns, it learns slowly.
-It must lose nearly 80 games to
-completely know the game.
-.PP
-.I Cubic
-plays three-dimensional tic-tac-toe on a 4\(mu4\(mu4
-board.
-Moves are specified as a sequence of three
-coordinate numbers in the range 1-4.
-.SH FILES
-/usr/games/ttt.k	learning file
//GO.SYSIN DD ttt.6
echo words.6
sed 's/.//' >words.6 <<'//GO.SYSIN DD words.6'
-.TH WORDS 6 
-.SH NAME
-hangman, words \- word games
-.SH SYNOPSIS
-.B /usr/games/hangman
-[ dict ]
-.PP
-.B /usr/games/words
-.SH DESCRIPTION
-.I Hangman
-chooses a word at least seven letters
-long from a word list.
-The user is to guess letters one at a time.
-.PP
-The optional argument
-names an alternate word list.
-The special name `\-a' gets a particular very large
-word list.
-.PP
-.I Words
-prints all the uncapitalized words
-in the word list that can be made from
-letters in
-.I string.
-.SH FILES
-/usr/dict/words		the regular word list
-.br
-/crp/dict/web2		the the \-a word list
-.SH DIAGNOSTICS
-After each round,
-.I hangman
-reports the average number of guesses per round
-and the number of rounds.
-.SH BUGS
-Hyphenated compounds are run together.
-.PP
-UNIX software is distributed without
-the \-a word list.
//GO.SYSIN DD words.6
echo wump.6
sed 's/.//' >wump.6 <<'//GO.SYSIN DD wump.6'
-.TH WUMP 6 
-.SH NAME
-wump \- the game of hunt-the-wumpus
-.SH SYNOPSIS
-.B /usr/games/wump
-.SH DESCRIPTION
-.I Wump
-plays the game of `Hunt the Wumpus.'
-A Wumpus is a creature that lives in a cave with several rooms
-connected by tunnels.
-You wander among the rooms, trying to
-shoot the Wumpus with an arrow, meanwhile avoiding
-being eaten by the Wumpus and falling
-into
-Bottomless Pits.
-There are also Super Bats which are likely to pick you up
-and drop you in some random room.
-.PP
-The program asks various questions which you answer
-one per line;
-it will give a more detailed description
-if you want.
-.PP
-This program is based on one described in
-.I "People's Computer Company,"
-.I 2,
-2 (November 1973).
-.SH BUGS
-It will never replace Space War.
//GO.SYSIN DD wump.6