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1.1 ! root 1: .TH ADVENTURE 6 ! 2: .SH NAME ! 3: gnuchess \- The Technology Chess Program for GNU Unix ! 4: .SH SYNOPSIS ! 5: .B gnuchess ! 6: [ ! 7: .BI \-n ! 8: ] ! 9: .SH DESCRIPTION ! 10: .I Chess ! 11: plays a game of chess against the user. Or it plays against ! 12: itself. Or it referees a game. ! 13: .PP ! 14: .I Chess ! 15: has two display modes. The first mode is simply a normal ! 16: mode that you could use with a terminal. The second mode ! 17: is a fancy display mode you can use with a SUN workstation. ! 18: To use the former, simply type 'gnuchess'. To use the ! 19: latter, simply type 'chesstool gnuchess' on a SUN ! 20: workstation where 'chesstool' is installed. In the ! 21: latter example, the argument should be the path ! 22: specifying where to find the gnuchess binary. ! 23: .PP ! 24: The following documentation assumes you are in ! 25: the first mode (e.g. normal mode using a regular ! 26: terminal). If not, then you should read the chesstool documentation. ! 27: .PP ! 28: For help once in ! 29: .I Chess ! 30: type a question-mark. To type in your move, use the ! 31: notation "e2e4" where the first letter-number pair ! 32: indicates the origination square and the second ! 33: letter-number pair indicates the destination square. ! 34: The letter indicates the column with the left-most ! 35: column being "a" and the right-most column being "h". ! 36: The number indicates the row, the first row (White's ! 37: first rank) being "1" and the last row (Black's ! 38: first rank) being "8". To castle, type the origin ! 39: square of the king and the destination square of the ! 40: king, just as you would do for a regular move. ! 41: .PP ! 42: The "bd" command prints what the current board position ! 43: looks like. You may type this to see what the board ! 44: looks like after the computer moves. ! 45: .PP ! 46: The "book" command compiles the opening book into ! 47: dbm(3) format. This book is then consulted ! 48: whenever the computer makes a move. If the current ! 49: position is in the book, then the suggested move ! 50: associated with that position will be made as ! 51: the computer's move. Note that this command is a ! 52: maintenance command, usually used only once per ! 53: site per book. ! 54: .PP ! 55: The "depth" command allows the user to change how many ! 56: moves ahead the computer looks. Normally, it looks ahead ! 57: three half-moves, examining every move for each side. ! 58: Then, it examines all captures for both sides for another ! 59: two half-moves. "Depth" changes the first of these values. ! 60: There is an upper boundary of five half-moves as set by ! 61: the quiescence search which searches captures a little ! 62: deeper to get better tactical play. ! 63: .PP ! 64: The "enter" command causes the current game played thus ! 65: far to be entered in the human-readable version of the ! 66: opening book. If no current game is in progress, this ! 67: command requests the name of a file from which to read ! 68: games. These are then added to the binary database. ! 69: Since the versions of the two files are slightly different, ! 70: in the former case, you must additionally type "book" ! 71: to get the new game fully entered in the book. ! 72: Also, the "enter" command tries to mail your new additions ! 73: to the book maintainers ! 74: so that your contributions can be added to the master copy ! 75: of the book. If you are not on our network, you should send ! 76: us your new additions via some other method. ! 77: .PP ! 78: "Fill" allows the user to specify a completely different ! 79: board position. Input is based on Forsythe notation. ! 80: For example, the opening position in Forsythe notation ! 81: is "rnbqkbnrpppppppp8888PPPPPPPPRNBQKBNR+". Capital ! 82: letters indicate a White piece, lower-case Black. A plus means ! 83: it is White's move, a minus means Black's. ! 84: .PP ! 85: "History" and "historyf" list the game as played so far ! 86: to the terminal and a file respectively. The file is ! 87: assumed to be "GAMES/chXXXXXX" where XXXXXX is a random ! 88: number and GAMES is a subdirectory. If GAMES does not ! 89: exist, an error message is reported. The equivalent of ! 90: "historyf" is done after every move automatically to ! 91: record the game thus far. ! 92: .PP ! 93: "Legals" shows legal moves for the current position along with ! 94: the rating for each move based on a positional presort. ! 95: .PP ! 96: "Neither" instructs the program to play neither side, that is, ! 97: to simply act as a referee. ! 98: .PP ! 99: "Reset" resets the board to the starting position. ! 100: .PP ! 101: "Quit" exits the game. ! 102: .PP ! 103: "Read" restores a game as if you were still playing it. ! 104: The game must be in the format as written by "historyf" or ! 105: as automatically recorded by the program itself after every ! 106: move. ! 107: .PP ! 108: "Self" causes the program to play against itself. ! 109: .PP ! 110: "Static" causes a static evaluation to be done for the ! 111: current position. A static evaluation is based on material ! 112: difference only. Positional considerations are handled ! 113: by the ply-1 positional presort. ! 114: .PP ! 115: "Switch" causes the program to move, whether or not it ! 116: is the program's turn to do so. Continually typing ! 117: "switch" is equivalent to typing "self". ! 118: .PP ! 119: "Test-moves" initiates a test of the speed of the move ! 120: generator. An initial series of move generations is done for the ! 121: opening position and the timing speed is reported. ! 122: Then, for each of ten stored test positions, a series of ! 123: move generations is done and the timing speed is reported ! 124: for each one. Finally, the program averages across those ! 125: ten runs and reports the overall average. ! 126: .PP ! 127: "Test-search" uses the ten stored test positions to ! 128: actually conduct a search at the current depth to ! 129: choose a move for each position. ! 130: .PP ! 131: "Undo" undoes the last move whether it was the computer's ! 132: or the human's. You may also type "remove". This is equivalent ! 133: to two "undo's" (e.g. retract one move for each side). ! 134: .PP ! 135: The flag-option on the command line allows specification ! 136: of how deep to search in half-moves as with 'Chess -3' ! 137: to search three half-moves ahead. Capture searches are ! 138: normally carried out a few half-moves further than the ! 139: regular full search specified with this option. This ! 140: is known as the quiescence search and it usually is ! 141: conducted to 6 ply. This option is identical to the "depth" ! 142: command once in the program. ! 143: .SH BUGS ! 144: .PP ! 145: En passant is not currently implemented. Also, promotion ! 146: to pieces other than queens is disallowed. Checks and ! 147: checkmates are not detected in the tree-search and ! 148: are not handled as "forcing" variations. ! 149: .PP ! 150: There are other bugs. Suggestions for improvements ! 151: and caveats are contained in the files README and TODO ! 152: which come with this distribution. ! 153: .SH AUTHOR ! 154: .nf ! 155: Stuart Cracraft Stuart Cracraft ! 156: P.O. Box 13123 UCLA, Dept. of Mathematics ! 157: Torrance, Ca. Los Angeles, Ca. ! 158: 90503 90024 ! 159: (213) 214-1136 (213) 825-9040 ! 160: .fi ! 161: .SH AUTHOR'S COMMENT ! 162: .PP ! 163: This software is being made available by the Free Software ! 164: Foundation under the restrictions described in its license ! 165: agreement which accompanies this distribution. This software, ! 166: its sources, binaries, documentation and all associated parts ! 167: are copyright (C) 1986 by the Free Software Foundation, Inc. ! 168: .SH SEE ALSO ! 169: .nf ! 170: chesstool(6) ! 171: dbm(3) ! 172: .fi
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