Author: Tord Romstad
Date: 09:09:54 07/21/04
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On July 21, 2004 at 11:41:42, Daniel Shawul wrote: > Hi Tord > what's hexagonla chess? Chess played on a hexagonal board rather than a square-shaped board. For an explanation of the rules, have a look at the following URL: http://www.chessvariants.com/hexagonal.dir/hexagonal.html > Is it much different from normal chess. The main difference is the shape of the board. Most of the rules are exactly the same, except that a stalemate is not a draw in hexagonal chess. When a game ends in stalemate, the "winner" gets 3/4 of a point and the "loser" 1/4 of a point. An interesting problem from an engine developers point of view is which score should be used to represent stalemate. At the moment, I use stalemate=0.04 pawns. I personally like the game better than chess, because of the bigger tactical complexities and the deeper and more challenging endgame. It is also a slightly more tricky game to program because of the bigger branching factor. My experience so far is that the search tree tends to explode very easily. > I had an engine which played chess and checkers [same code] and > it was very hard for me to update both at the same time. It was only > after i saw tscp i stick to chess only. So far, my code is 99% equal in both programs. There are just a few tiny differences in the move generators, evaluation functions and IO routines. Both programs have reached the stage where they are able to play a game and solve simple tactical problems, but they are still very weak. I expect to release the first public versions in August. Tord
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