Author: Ricardo Gibert
Date: 17:43:49 12/14/03
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On December 14, 2003 at 20:03:04, David Dahlem wrote: >On December 14, 2003 at 19:42:01, Russell Reagan wrote: > >>On December 14, 2003 at 12:39:34, David Dahlem wrote: >> >>>I don't understand this formula either. For example, the latest WCCC Tourney at >>>Graz had 16 participants, and 11 rounds were played. >> >>It is not a good idea to base "what is correct" on "what the ICGA does." We're >>not sure why they do some of the things they do. >> >>>How do tournament directors >>>decide how many rounds will be played? >> >>I suspect that the ICGA rolls a pair of dice. This year they rolled an 11. A >>tournament director who wants to do things the right way will use the formula >>and other math, along with the desired use of the tournament (ex. do you just >>want to get one clear winner, or do you want the top 5 places to be accurate, >>etc.), to decide the number of rounds. > >Even with 16 participants and 11 rounds, there was a tie and playoff. So i'm >wondering if there is really a formula to calculate number of rounds that will >result in a definite, clear winner? > >Regards >Dave There is no guarantee with a fixed number of rounds, since all the games of every round can be draws. A remote possibility, but in theory, it can't be avoided. With a variable number of rounds, you can compell a decisive result of a pairing by requiring the players to replay the game until a decisive result is achieved. This sort of thing has been done with last round tie breaker games. This generally involves progressively shortening the time control over successive games to keep the tie breaker from lasting too long.
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