The game weiqi.sed of weiqi(go) is write in GNU sed.
After the program began to run, we must input start to start a new game.
We can input two numbers for the coordinate in a line to put a stone on the position of the board. Black and white are in turn.
We can input score to lead the game to counting.
In counting, we can input two numbers for the coordinate to clear the dead stones.
After we cleared all the , we can input end to count the result. We use Chinese rules(3+3/4) because it is more simple than the others.
At last, we can input a file name to save the chess manual to it. And, if the suffix of the file name is sgf, the program will save the chess manual in sgf format.