Author: Uri Blass
Date: 01:51:35 02/05/05
I want to have a loop on all the legal FEN of tablebases positions (at least fen of 4 pieces) in order to debug my code to use tablebases and also to debug the function that I plan to write that should check if a FEN is legal. I gave the source code of movei to Dann Corbit and he wrote for me a function that does part of it that is not based on the rest of the code of movei but it does not check things like if the side to move can capture the opponent king and I find the program hard to understand because for some reason Dann used a lot of char ** that I never use in movei. It may be because of my lack of knowledge in programming but I see no reason to use ** for tasks like that and I see no advantage in it and it only cause problems in understanding such a code. I understand that ** should be pointer to pointer but not more than it and I have no experience with code like that. I think simply to read the FEN string char after char and collect information when I never need to go backward in the string when Dann's code does not do it and in order to check if there is a single king it simply count K in the relevant part of the string that is called piece_placement It is used as char ** in one function tokenize_position_string and as char * in another function setup that calls tokenize_position_string(I guess that the computer simply translate char* to char **) I still do not fully understand the code that Dann wrote for me at this moment(note that this code has nothing to do with the moves of the engine and it is only about checking the FEN that the program does not use during games) and I feel that I spend too much time about trying to understand things that are not relevant to the playing strength. I think that I will write my own code for that task instead of Dann's code and I already started with it. I wonder if you do it. Uri
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