Hi Robin - if it's not too late then page 49 section 3.1.4 "Teams-of-eight – not cross IMPs" could do with a revision. It currently says:
To convert to VPs, multiply the number of boards being played in each match by two, and use the standard teams-of-four scale for that number e.g. for a 12-board teams-of-eight competition scored this way, use a standard 24-board VP scale.
The Yorkshire League features club teams of eight playing 32 boards - there are currently seven divisions with eight teams per division. The scoring is "add then imp" as described in White Book paragraph (b): aggregate all four scores together before converting to IMPs, using the standard IMP scale (not modified IMPs). Last seasons reasults are here:
A few years ago the YCBA analysed their VP scale using guidance from the WBF which said that the 20-0 blitz point should be reached in 5% of games. They looked at historical results and determined the blitz point was about 96 IMPs which equates to standard VP scale for 51 boards. This is roughly a multiplication factor of 1.6 not 2.
I recommend:
the paragraph above (multiply by two) should apply to White Book part (a) "Teams-of-four scoring" ("imp then add") where IMP scoring is done as two teams of four and the IMPs then get added together.
Part (b) should have a different multiple - 1.6 based on YCBA analysis.
A new Part (c) should be added to incorporate the paragraph about the modified IMP scale (detailed on page 65), in which case the standard VP scale is used.
The same VP scale does not seem suitable for both method (a) and method (b). Take a double game swing where Team G make a thin 3NT at both tables (+600) and Team H didn't bid it (+150) at both tables
Method (a) produces +450 (10 IMPs) and +450 (10 IMPs) = 20 IMPs => i.e. the double game swing doubles the IMPs
Method (b) produces +900 = 14 IMPs => i.e. the second game swing only adds four IMPs, a 40% increase
Method (c) produces +900 = 12 IMPs => i.e. the second game swing increases from 8 IMPs to 12 IMPs - a 50% increase
@UsuallyDummy said:
Hi Robin - if it's not too late then page 49 section 3.1.4 "Teams-of-eight – not cross IMPs" could do with a revision. It currently says:
Comments
Hi Robin - if it's not too late then page 49 section 3.1.4 "Teams-of-eight – not cross IMPs" could do with a revision. It currently says:
The Yorkshire League features club teams of eight playing 32 boards - there are currently seven divisions with eight teams per division. The scoring is "add then imp" as described in White Book paragraph (b): aggregate all four scores together before converting to IMPs, using the standard IMP scale (not modified IMPs). Last seasons reasults are here:
https://www.ebu.co.uk/results/leagues/YOR-000023-01
A few years ago the YCBA analysed their VP scale using guidance from the WBF which said that the 20-0 blitz point should be reached in 5% of games. They looked at historical results and determined the blitz point was about 96 IMPs which equates to standard VP scale for 51 boards. This is roughly a multiplication factor of 1.6 not 2.
I recommend:
The same VP scale does not seem suitable for both method (a) and method (b). Take a double game swing where Team G make a thin 3NT at both tables (+600) and Team H didn't bid it (+150) at both tables
Sorry the White Book was 'put to bed' yesterday to meet a printing deadline. https://www.ebu.co.uk/documents/laws-and-ethics/white-book/white-book.pdf
Re 3.1.4
* 3.1.4 reflect the way EBU scores Teams-of-eight except for Tollemache / Cross IMP scoring
I will review 3.1.4 for White Book 2026.
Thanks Robin - I presume your third bullet meant to say: White Book does not recommend 'add-then-imp'.
By the way, would it be possible to unpin the out-of-date "Announcements" cluttering up the top of this forum?
Done
Corrected, thanks.