.TH REVERSI 6 .SH NAMEreversi \- 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 boardusing two-sided tokens.Each player takes his turn by placinga token with his side up in an empty square.During the first four turns, playersmay only place tokens in the four central squaresof the board.Subsequently, with each turn, a player.I mustcapture one or moreof his opponent's tokens.He does this by placingone of his tokens such thatit and another of his tokens embracea solid line of his opponent'shorizontally, vertically or diagonally.Captured tokens are flipped overand thus can be re-captured.If a player cannot outflankhis opponent he forfeitshis turn.The play continues until theboard is filled or until no moreoutflanking is possible..PPIn this game,your tokens are asterisksand the machine's are at-signs.You move by typing in the row and columnat which you want to place your tokenas two digits (1-8),optionally separated by blanks or tabs.You can also type.TP.B  cto continue the game after hitting break(this is only necessary if you interrupt the machinewhile it is deliberating)..TP.BR g " \fIn"to start.I reversiplaying against itselffor the next.IR n ""moves(or until the break key is hit)..TP.B  nto stop printing the board after each move..TP.B  oto start it up again..TP.B  pto print the board regardless..TP.B  qto quit (without dishonor)..TP.B  sto print the score..PP.I Reversialso recognizes several commands which are valid onlyat the start of the game, before any moves have been made.They are.TP.B  fto let the machine go first..TP.BR h " \fIn"to ask for a handicapof from one to four corner squares.If you'regood, you can give the machinea handicap by typing a negative number..TP.BR l " \fIn"to set the amount of lookaheadused by the machine in searching for moves.Zero means none at all. Four is the default.Greater than six means you may fall asleepwaiting for the machine to move..TP.BR t " \fIn"to tell.I reversithat you will only need.IR n ""secondsto consider each move. If you fail to respond in thealloted time, you forfeit your turn..PPIf.I reversiis given a file name as an argument,it will checkpoint the game,move by move, by dumping the board onto.IR file .The.B \-roption will cause.I reversito restart the game from.I fileand continue logging.