projects / unix-history / blame
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| 4 | Chess(GNU) BSD Reference Manual Chess(GNU) | |
| 5 | ||
| 6 | ||
| 7 | N\bNA\bAM\bME\bE | |
| 8 | Chess - GNU Chess | |
| 9 | ||
| 10 | S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS | |
| 11 | C\bCh\bhe\bes\bss\bs [ a\bar\brg\bg1\b1 a\bar\brg\bg2\b2 ] | |
| 12 | ||
| 13 | D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN | |
| 14 | _\bC_\bh_\be_\bs_\bs plays a game of chess against the user or it plays | |
| 15 | against itself. | |
| 16 | ||
| 17 | _\bC_\bh_\be_\bs_\bs has a simple alpha-numeric board display or it can | |
| 18 | be compiled for use with the CHESSTOOL program on a SUN | |
| 19 | workstation. The program gets its opening moves from the | |
| 20 | file gnuchess.book which should be located in the same | |
| 21 | directory as gnuchess. To invoke the prgram, type | |
| 22 | 'gnuchess' or type 'chesstool gnuchess' on a SUN worksta- | |
| 23 | tion where 'CHESSTOOL' is installed. The 'gnuchess' com- | |
| 24 | mand can be followed by up to 2 command line arguments. | |
| 25 | If one argument is given it determines the programs search | |
| 26 | time in seconds. If two arguments are given, they will be | |
| 27 | used to set tournament time controls with the first argu- | |
| 28 | ment being the number of moves and the second being the | |
| 29 | total clock time in minutes. Thus, entering 'chess 60 5' | |
| 30 | will set the clocks for 5 minutes (300 seconds) for the | |
| 31 | first 60 moves. If no argument is given the program will | |
| 32 | prompt the user for level of play. For use with | |
| 33 | CHESSTOOL, see the documentation on that program. | |
| 34 | ||
| 35 | Once _\bC_\bh_\be_\bs_\bs is invoked, the program will display the board | |
| 36 | and prompt the user for a move. To enter a move, use the | |
| 37 | notation 'e2e4' where the first letter-number pair indi- | |
| 38 | cates the origination square and the second letter-number | |
| 39 | pair indicates the destination square. An alternative is | |
| 40 | to use the notation 'nf3' where the first letter indicates | |
| 41 | the piece type (p,n,b,r,q,k). To castle, type the origin | |
| 42 | and destination squares of the king just as you would do | |
| 43 | for a regular move, or type "o-o" for kingside castling | |
| 44 | and "o-o-o" for queenside. | |
| 45 | ||
| 46 | C\bCO\bOM\bMM\bMA\bAN\bND\bDS\bS | |
| 47 | In addition to legal moves, the following commands are | |
| 48 | available as responses. | |
| 49 | ||
| 50 | _\bb_\be_\be_\bp -- causes the program to beep after each move. | |
| 51 | ||
| 52 | _\bb_\bd -- updates the current board position on the display. | |
| 53 | ||
| 54 | _\bb_\bo_\bo_\bk -- turns off use of the opening library. | |
| 55 | ||
| 56 | _\bb_\bo_\bt_\bh -- causes the computer to play both sides of a chess | |
| 57 | game. | |
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| 60 | ||
| 61 | 4.4BSD 1 | |
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| 69 | ||
| 70 | Chess(GNU) BSD Reference Manual Chess(GNU) | |
| 71 | ||
| 72 | ||
| 73 | _\bb_\bl_\ba_\bc_\bk -- causes the computer to take the black pieces with | |
| 74 | the move and begin searching. | |
| 75 | ||
| 76 | _\bl_\be_\bv_\be_\bl -- allows the user to set time controls such as 60 | |
| 77 | moves in 5 minutes etc. In tournament mode, the program | |
| 78 | will vary the time it takes for each move depending on the | |
| 79 | situation. If easy mode is disabled (using the 'easy' | |
| 80 | command), the program will often respond with its move | |
| 81 | immediately, saving time on its clock for use later on. | |
| 82 | ||
| 83 | _\bd_\be_\bp_\bt_\bh -- allows the user to change the search depth of the | |
| 84 | program. The maximum depth is 29 ply. Normally the depth | |
| 85 | is set to 29 and the computer terminates its search based | |
| 86 | on elapsed time rather than depth. Using the depth com- | |
| 87 | mand allows setting depth to say 4 ply and setting | |
| 88 | response time to a large number such as 9999 seconds. The | |
| 89 | program will then search until all moves have been exam- | |
| 90 | ined to a depth of 4 ply (with extensions up to 11 addi- | |
| 91 | tional ply for sequences of checks and captures). | |
| 92 | ||
| 93 | _\be_\ba_\bs_\by -- toggles easy mode (thinking on opponents time) on | |
| 94 | and off. The default is easy mode ON. If easy mode is | |
| 95 | disabled, the user must enter a 'break' or '^C' to get the | |
| 96 | programs attention before entering each move. | |
| 97 | ||
| 98 | _\be_\bd_\bi_\bt -- allows the user to set up a board position. In | |
| 99 | this mode, the '#' command will clear the board, the 'c' | |
| 100 | command will toggle piece color, and the '.' command will | |
| 101 | exit setup mode. Pieces are entered by typing a letter | |
| 102 | (p,n,b,r,q,k) for the piece followed by the coordinate. | |
| 103 | For example "pb3" would place a pawn on square b3. | |
| 104 | ||
| 105 | _\bf_\bo_\br_\bc_\be -- allows the user to enter moves for both sides. To | |
| 106 | get the program to play after a sequence of moves has been | |
| 107 | entered use the 'white' or 'black' commands. | |
| 108 | ||
| 109 | _\bg_\be_\bt -- retrieves a game from disk. The program will | |
| 110 | prompt the user for a file name. | |
| 111 | ||
| 112 | _\bh_\be_\bl_\bp -- displays a short description of the commands. | |
| 113 | ||
| 114 | _\bh_\bi_\bn_\bt -- causes the program to supply the user with its | |
| 115 | predicted move. | |
| 116 | ||
| 117 | _\bl_\bi_\bs_\bt -- writes the game moves and some statistics on | |
| 118 | search depth, nodes, and time to the file 'chess.lst'. | |
| 119 | ||
| 120 | _\bn_\be_\bw -- starts a new game. | |
| 121 | ||
| 122 | _\bp_\bo_\bs_\bt -- causes the program to display the principle varia- | |
| 123 | tion and the score during the search. A score of 100 is | |
| 124 | ||
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| 126 | ||
| 127 | 4.4BSD 2 | |
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| 135 | ||
| 136 | Chess(GNU) BSD Reference Manual Chess(GNU) | |
| 137 | ||
| 138 | ||
| 139 | equivalent to a 1 pawn advantage for the computer. | |
| 140 | ||
| 141 | _\br_\ba_\bn_\bd_\bo_\bm -- causes the program to randomize its move selec- | |
| 142 | tion slightly. | |
| 143 | ||
| 144 | _\br_\be_\bv_\be_\br_\bs_\be -- causes the board display to be reversed. That | |
| 145 | is, the white pieces will now appear at the top of the | |
| 146 | board. | |
| 147 | ||
| 148 | _\bq_\bu_\bi_\bt -- exits the game. | |
| 149 | ||
| 150 | _\bs_\ba_\bv_\be -- saves a game to disk. The program will prompt the | |
| 151 | user for a file name. | |
| 152 | ||
| 153 | _\bs_\bw_\bi_\bt_\bc_\bh -- causes the program to switch places with the | |
| 154 | opponent and begin searching. | |
| 155 | ||
| 156 | _\bu_\bn_\bd_\bo -- undoes the last move whether it was the computer's | |
| 157 | or the human's. You may also type "remove". This is equiv- | |
| 158 | alent to two "undo's" (e.g. retract one move for each | |
| 159 | side). | |
| 160 | ||
| 161 | _\bw_\bh_\bi_\bt_\be -- causes the computer to take the white pieces with | |
| 162 | the move and begin searching. | |
| 163 | ||
| 164 | B\bBU\bUG\bGS\bS | |
| 165 | Pawn promotion to pieces other than a queen is not | |
| 166 | allowed. En-Passant does not work properly with | |
| 167 | CHESSTOOOL. The transposition table may not work properly | |
| 168 | in some positions so the default is to turn this off. | |
| 169 | ||
| 170 | S\bSE\bEE\bE A\bAL\bLS\bSO\bO | |
| 171 | chesstool(6) | |
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| 193 | 4.4BSD 3 | |
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