Author: Serge Desmarais
Date: 18:20:31 09/16/98
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On September 15, 1998 at 17:19:30, Roberto Waldteufel wrote: > >> [snip] > >Hi Bob, > >In fact, the laws of chess are very specific about draw offers. > >1) It is only allowed to offer a draw when it is your turn to play, not while >your opponent is thinking (or searching). In my 1993 FIDE rule, it says you CAN offer a draw on your opponent's time, but if he complains about that to the arbiter, you would get reprimmended. If your opponent accept the draw offer, then it has no consequences. I did not check/know if the FIDE changed this rule? Serge Desmarais > >2) Having made a draw offer, you do not have the right to retract it. The >opponent may think as long as his clock permits before either accepting the >offer or making a move. Once he makes a move and presses his clock, he loses the >right to accept your draw offer (unles you make a new draw offer). > >I think that this actually simplifies the task for an autoplayer compared to >what you suggest, since the program that has been offered the draw does not need >to check if the offer has been rescinded, since that would be illegal. Although >it is only a minor point of the FIDE laws, I do think it is important to get >this sort of thing right at an early stage, otherwise in years to come it will >remain an embarrasing anomally once multiple programs support the standard. This >is how we come to rely on arrangements that ignore rare but important situations >like underpromotions, for example. > >Can you explain how the engine and the interface communicate in the set-up you >propose? I imagine it would be quite simple, but I don't really know anything >about communications programming, so I'm not quite sure what extra code the >engine needs. > >Best wishes, >Roberto
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