shevek Posted April 28, 2012 Report Share Posted April 28, 2012 In your country, are there guidelines about carryforwards? Take an example of 2 session qualifying to 1 session matchpoint final.The trend in australia is to start afresh. That may have been due to technical limitations years ago.Maybe time to revisit this. Then there are Swiss teams with leaders playing off. Advice please. Quote Link to comment Share on other sites More sharing options...
gordontd Posted April 28, 2012 Report Share Posted April 28, 2012 In your country, are there guidelines about carryforwards? Take an example of 2 session qualifying to 1 session matchpoint final.The trend in australia is to start afresh. That may have been due to technical limitations years ago.Maybe time to revisit this. Then there are Swiss teams with leaders playing off. Advice please.We have a popular format that's widely used by counties for their Championship Pairs when they consist of a qualifying round followed by a 7-table Howell for the top 14 pairs. It's described in the White Book: Section 172 EBU Carry-forward Score FormulaContestants who qualify for the next stage of a competition may be awarded a carryforwardscore in respect of their qualifying score, provided that all such contestantshave been ranked as a single field. This is unusual in EBU events.The formula is:......S x FTC = ----------......2 x QTwhereC = the carry-forward score in MPs to be awarded to the contestantS = the qualifying score in MPs obtained by the contestantFT = MP top on a board in the finalQT = MP top on a board in the qualifying stageMP = matchpointsNote The effect of this formula is such that if the two sessions are of equallength, then the final carries twice as much weight as the qualifier. Thisratio varies as the respective lengths of the two stages vary.Fractions are resolved in the competitors' favour to the minimum unit of scoring in thefinal. Quote Link to comment Share on other sites More sharing options...
shevek Posted April 30, 2012 Author Report Share Posted April 30, 2012 Thanks for that. Quote Link to comment Share on other sites More sharing options...
gnasher Posted April 30, 2012 Report Share Posted April 30, 2012 The effect of this formula is such that if the two sessions are of equal length, then the final carries twice as much weight as the qualifier. To me that sounds like too much. The ACBL's method is less generous than the EBU's, and also more complex:3. A carryover will be calculated based on scores in the qualifying session(s). The maximum spreadbetween highest and lowest carryover will be equal to the number of sessions in the events times top inthe final session(s). For six session events with two cuts, the maximum spread for the middle tworounds will be only two and one half times top in the semi-final sessions. 4. Carryovers will be based on the following formula:C = (M - m) [ (Q/E)(AxBxQ)/S)] whereC = carryoverB = number of boards played in qualifying session(s)S = sum of the scores of all qualifiersM = matchpoints of a given pairm = matchpoints of lowest qualifying pairE = pairs entered in the eventQ = pairs to be qualifiedA = average on each board in the final session(s) If the formula determines the high carryover to be above the allowable limits then the formula isabandoned and the following procedure is followed. Subtract the low qualifying score from thehigh qualifying score and divide this number into the maximum allowable carryover. The resultingfactor is multiplied by the difference of a score and the low qualifying score. Thus the low qualifierwill have a carryover of zero and the high qualifier will have the maximum allowable carryover. In WBF events there is no carryover. I've never heard anyone argue that this is sensible. Quote Link to comment Share on other sites More sharing options...
shevek Posted April 30, 2012 Author Report Share Posted April 30, 2012 To me that sounds like too much. The ACBL's method is less generous than the EBU's, and also more complex: In WBF events there is no carryover. I've never heard anyone argue that this is sensible. Yes the ACBL seems too complicated for a weekend congress & the EBU guide too generous. I've done some googling and seen european events with 1/3 c/f. Seems closer to the mark. Quote Link to comment Share on other sites More sharing options...
jeffford76 Posted April 30, 2012 Report Share Posted April 30, 2012 In WBF events there is no carryover. I've never heard anyone argue that this is sensible. Isn't this so that pairs can drop into the later stages? If there were carryover it's not at all obvious what score they should start with. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.