Author: Marc-Philippe HUGET
Date: 23:11:50 04/20/99
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On April 20, 1999 at 15:37:19, Christophe Theron wrote: >>(e4(e5(d4 ...)(Nf6 ...))(d4(d5 ...)) >And how do you handle transpositions? I have an idea, but I would like to hear >yours. Hi, Transpositions are very simple since after each (, you are one-move forward and after each ), you are one-move backward. So, if you have e4, you play the move and you are in one position, after e5 you are in another position. It is a depth-first search in a tree, you do and undo moves. In fact, with this kind of books, you play moves until you find the correct position and then you play the next move. After e4, position p1 After e5, position p2 After d4, position p3 and so on, if you finish the line beginning with d4 You are after e5 and position p2 After Nf6, position p4 etc. Marc-Philippe
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