October 2017 - 7
➺ InBox
Wanted: effective rating system
When I was a relative newcomer to
duplicate bridge, I wrote a letter to the
editor that was published in the April
2008 issue. The main point of my letter
was that the number of masterpoints
a player had might not be representative of how good they are, and I wanted
to try to measure my improvement (if
any) as I tried to progress.
But factors such as how often someone plays, the strength of the field in
the game, the competency of one's
partner (playing with a "pro"?), single/
double/triple points from special
games, number of pairs in a section,
etc., confused the issue.
Stratified games helped newcomers like me, and I even received points
scoring less than 50%, which I suppose
is OK, but the real questions were how
good of a player was I, and was I improving? The number of masterpoints
I accumulated did not represent my
strength, and people even joked that it
was more like an attendance record.
Chess players have a rating which
goes up and down based upon their
performance, taking into account the
strength of their opponents. Beat a
stronger opponent and gain a lot of
points. Beat a weaker opponent and
gain fewer points. Lose to a stronger
opponent and lose a few points, etc.
The editor responded to my letter
by saying that a long-term goal was to
basically develop a rating system that
reflected current playing strength,
as well as to retain the cumulative
masterpoints earned. This seemed like
a great idea to me, sort of like a baseball player having lifetime statistics
recognizing the achievements of his
career, and current season statistics. I
just figured I'd continue playing, trying
to improve, and see when the ACBL
would act on this, although longtime
players told me not to hold my breath!
Letters to the Editor
Well, it's been over nine years and
nothing has been done. It seems that
now is the time to actually do something about this. With the advent of
electronic scoring in most clubs, all the
data about a player and his partner and
opponents is available. It should be reasonably easy to develop an algorithm to
determine the current playing strength
of a player. In my opinion, the current
playing strength would not be an exact
number to hang your hat on, but rather
a good indication of the skill the player
has. I'll leave the details on how to do
this to the ACBL to figure out.
Just to be clear, I am not saying to
eliminate masterpoint totals earned
over a lifetime of playing, just to add a
new measure: current playing strength.
BARRY ELBERG
Westbury NY
It has long been a topic of discussion
in the North American bridge community that the current system of ranks,
based on lifetime accumulation of
masterpoints, is not a good reflection
of current ability. New, talented stars
are often forced to play in team events
well below their ability level, and
older, long-standing players are often
forced to play in events that far exceed
their skill level based on a long bridge
career's accumulation.
I would like to propose we supplement the current rank system with
a rating system. Rank would be unchanged, based on lifetime points. Rating would adjust up or down based on
recent (perhaps last five years?) performance. And stratification/bracketing/event eligibility would be based
on rating instead of rank. I believe this
solution would improve the situation
for everyone and has little downside.
MARTY DENEROFF
New York NY
Respect for Goren
I was reminded, by Harris J. Levey's
letter about the value of counting short
suits (July 2017), of something which
has puzzled me for years: the widespread misunderstanding and neglect
of the Anderson-Goren distributional
point count.
For opening bids, Goren made it
clear that this method valued long
suits and merely counted short suits as
a convenience. Indeed, his point count
initially attributed 1 point to every
card beyond four in the longest suit
and 1 point to every card beyond three
in other suits. If there are long suits,
there must be shortage somewhere,
and exactly the same result is attained
by the shortcut of counting for short
suits. Either way amounts to counting
1 point for each card by which a hand
differs from flat distribution.
It is remarkable that points for
length can be assigned on the same
scale, but the 3 points counted for a
void are not really different from the
points accorded to a king. The 3 points
represent the value of holding suits
which could make a good trump suit
or side suit, just as the 3 points for the
king represent the possibility of making good use of that card in the play.
They are both probabilities only. The
void may not indicate length worth
3 points if there is a misfit; the king
may not be worth 3 points if the ace is
unfavorably located.
It is easy to see that a hand which
just satisfies the Rule of 20 counts
either 13 or 14 in Goren's method, so
the difference would appear to be in
a range where players might disagree
about whether a hand should be
Letters to the editor are welcome by regular mail and email.
Brevity is considered a virtue, as is subject matter with relevance
to a majority of ACBL members. Unsigned letters are not
considered for publication, so please include your name and
hometown. Letters may be edited. All letters will receive a
response. Send emails to editor@acbl.org.
October 2017 Bridge Bulletin
7
Table of Contents for the Digital Edition of October 2017
In First Seat - Paul Linxwiler
Letters to the Editor
CEO Corner
San Diego hosts the Summer NABC
Longest Day giving tops $1 million
Results from the Summer NABC Part 2
Deals from the Toronto NABC
Youth NABC draws record attendance
Richard Jeng is King of Bridge
Play the Instant Matchpoint Game Oct.25
ACBL Website guide
Club News
Ruling the Game - by Matt Smith
The Bidding Box
It's Your Call
Card Play 101 - by Phillip Alder
Bridge Player's Survival Kit - When not to finesse- by Leslie Shafer
Play & Learn - Judgment and limit raises- by Pat Harrington
Startup Bridge - Good, better, best (part 2)- by Lynn Berg
Ask Jerry - by Jerry Helms
Bidding Basics -Responding to 1♦- by Larry Cohen
Bidding Basics Quiz
International Fund Game Winners
Mike's Bridge Lesson - A brief quiz - by Mike Lawrence
The Real Deal - by Larry Cohen
West Hands for the January Bidding Box
Chalk Talk - Test your bidding IQ- by Eddie Kantar
Boehm on Bridge - Hand Evaluation (part 22) - by August Boehm
Misplay these Hands with Me - by Mark Horton
East Hands - The Bidding Box
Challenge of the Month
Out of Hand
Better Bridge with Bergen - Bergen's best bridge tips (part 15) - by Marty Bergen
Bidding Matters - by Karen Walker
ACBL Board of Directors - Toronto Meeting
Test Your Play
Mike's Advice - by Mike Lawrence
Solutions to Test Your Play
Call for Goodwill member of the year nominations
My Bridge and Yours - by Frank Stewart
Nominations for 2018 von Zedtwitz and Blackwood Awards
Dear Billy - by Billy Miller
Bridge with the Abbot - by David Bird
George's World - by George Jacobs
Life Master Milestones
Big Games
New Life Masters
Obituary - James H. Reeve (1941-2017)
In Memoriam
Obituary - Thomas B. McMullin (1939-2017)
Crossword puzzle
Tournament Directory
October 2017 - 1
October 2017 - 2
October 2017 - 3
October 2017 - 4
October 2017 - 5
October 2017 - In First Seat - Paul Linxwiler
October 2017 - Letters to the Editor
October 2017 - 8
October 2017 - CEO Corner
October 2017 - San Diego hosts the Summer NABC
October 2017 - 11
October 2017 - Longest Day giving tops $1 million
October 2017 - 13
October 2017 - 14
October 2017 - 15
October 2017 - 16
October 2017 - 17
October 2017 - Results from the Summer NABC Part 2
October 2017 - 19
October 2017 - 20
October 2017 - 21
October 2017 - 22
October 2017 - 23
October 2017 - 24
October 2017 - 25
October 2017 - Deals from the Toronto NABC
October 2017 - 27
October 2017 - 28
October 2017 - 29
October 2017 - Youth NABC draws record attendance
October 2017 - 31
October 2017 - Richard Jeng is King of Bridge
October 2017 - Play the Instant Matchpoint Game Oct.25
October 2017 - ACBL Website guide
October 2017 - Club News
October 2017 - Ruling the Game - by Matt Smith
October 2017 - The Bidding Box
October 2017 - 38
October 2017 - 39
October 2017 - It's Your Call
October 2017 - 41
October 2017 - 42
October 2017 - 43
October 2017 - Card Play 101 - by Phillip Alder
October 2017 - Bridge Player's Survival Kit - When not to finesse- by Leslie Shafer
October 2017 - Play & Learn - Judgment and limit raises- by Pat Harrington
October 2017 - Startup Bridge - Good, better, best (part 2)- by Lynn Berg
October 2017 - Ask Jerry - by Jerry Helms
October 2017 - Bidding Basics -Responding to 1♦- by Larry Cohen
October 2017 - International Fund Game Winners
October 2017 - Mike's Bridge Lesson - A brief quiz - by Mike Lawrence
October 2017 - The Real Deal - by Larry Cohen
October 2017 - Chalk Talk - Test your bidding IQ- by Eddie Kantar
October 2017 - Boehm on Bridge - Hand Evaluation (part 22) - by August Boehm
October 2017 - East Hands - The Bidding Box
October 2017 - Out of Hand
October 2017 - Better Bridge with Bergen - Bergen's best bridge tips (part 15) - by Marty Bergen
October 2017 - Bidding Matters - by Karen Walker
October 2017 - Test Your Play
October 2017 - Mike's Advice - by Mike Lawrence
October 2017 - Call for Goodwill member of the year nominations
October 2017 - Nominations for 2018 von Zedtwitz and Blackwood Awards
October 2017 - 63
October 2017 - Bridge with the Abbot - by David Bird
October 2017 - George's World - by George Jacobs
October 2017 - Life Master Milestones
October 2017 - 67
October 2017 - 68
October 2017 - 69
October 2017 - Big Games
October 2017 - Obituary - James H. Reeve (1941-2017)
October 2017 - Obituary - Thomas B. McMullin (1939-2017)
October 2017 - Crossword puzzle
October 2017 - Tournament Directory
October 2017 - 75
October 2017 - 76
October 2017 - 77
October 2017 - 78
October 2017 - 79
October 2017 - 80
October 2017 - 81
October 2017 - 82
October 2017 - 83
October 2017 - 84
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