RECKON YOUR PERCENTAGE AS YOU GO
How is your traveller result converted to match points?.
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BOARD 1 SESSION RED |
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NS |
EW |
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W B |
TRICKS |
NS |
SCORE |
MPS |
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PAIR |
PAIR |
VUL |
CONTRACT |
BY |
LEAD |
MADE |
PLUS |
MINUS |
+ |
– |
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1 |
11 |
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3H |
S |
4 4 |
10 |
140 |
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8 |
8 |
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2 |
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3 |
15 |
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4H+1 |
N |
7 0 |
11 |
450 |
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15 |
1 |
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4 |
17 |
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3C-1 |
W |
3 5 |
8 |
50 |
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10 |
6 |
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5 |
19 |
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3C |
W |
1 7 |
9 |
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110 |
2 |
14 |
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6 |
12 |
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3NT |
N |
6 2 |
9 |
400 |
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14 |
2 |
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7 |
14 |
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3NT-3 |
N |
0 8 |
6 |
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150 |
0 |
16 |
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8 |
16 |
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2H+2 |
S |
5 3 |
10 |
170 |
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10 |
6 |
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9 |
18 |
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3NT |
N |
2 6 |
8 |
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50 |
4 |
12 |
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10 |
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11 |
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12 |
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13 |
2 |
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4H+1 |
S |
7 0 |
11 |
450 |
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15 |
1 |
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Looking at a finalised board traveller (ignore the Lead column for the moment):
Board Played 9x so 9 results
TOP is 16
PAR is 8
Find your [or pick a] score.
On your side only (NS or EW) then
for each pair you tie with you get 1 mp
for each pair you beat you get 2 mps.
The NS and EW match points are complementary, they add to a TOP.
If ‘R’ is the number of results on a traveller then
a TOP is 2(R-1)
a PAR is half-a-top (R-1) and
the total mps on each side is R x (R-1).
If there are E pairs (includes you) on your side with the same or Equal score then
you tie with (E-1) pairs and get (E-1) mps,
plus if there are W pairs on your side with a Worse score then
you beat those (W) pairs and get 2 x W mps.
The MP award ‘M’ is (E-1) +2 x W mps.
If this MP award is for a NS then subtract from the board TOP to get the EW award.
THERE IS AN EQUIVALENT CALCULATION METHOD
If ‘B’ is the number of pairs with a Better score then
B + E + W = R ………..the end number of results on the traveller
The award formula is
E – 1 + 2 x W = M………the mps awarded
Subtract the first from the second and you get
W – B – 1 = M – R
Re-arranging
M= (R-1) + W – B or M= PAR + W – B
“So you always start with a PAR and subtract 1 for each score that is Better and add 1 for each Worse score.”
This is much easier to calculate when just looking at your own score but not so good when scoring the whole traveller where the 1-2 method seems faster.
To ‘reckon’ your score on-the-go you will have to estimate the PAR plus/minus the DELTA (the W–B number)
as if the board was played ‘R’ times (the number of results on a complete traveller).
To illustrate the WB method, the scorer has borrowed the Lead column above to do the NS Worse-thans and Better-thans. Often the W and B numbers will add to (R-1) except where equal scores are present.
The estimate of the final W-B value is based on realising that some pairs will be ‘lucky’ and succeed with better contracts even if none yet appear on the traveller so far, or will take the right action where you have not, or will fail with the ‘right’ lead where you have been ‘lucky’, and so on. It may be the board is unavoidably flat.
SIMPLER STILL
Given the estimate of W-B is speculative and crude, it is easier just to guess the W and B counts as though all boards are played only 6 times so that the TOP is 10. The PAR is 5. This keeps the arithmetic simple. Record the sum 5+W-B as a score out-of-10 on your score card.
At the end, add up the out-of-ten scores, divide by maximum possible (210,220,240,260) and multiply by 100 to get a percentage.
I’m EW12 on ROUND5. Our club lead holds them to 3NT with declarer taking a deep finesse, but 4C by us would be 3 off doubled (-500). It seems as though 4H should make with maybe with an overtrick. Currently the number of Worse scores are 0 and the Better scores are 4. My guess is to add in a Worse score (of 420 to NS). So out of 6 boards with a TOP of 10 and PAR of 5, I would score this board 5 +1- 4 = 2 out of 10
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BOARD 1 SESSION RED |
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NS |
EW |
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TRICKS |
NS |
SCORE |
MPS |
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PAIR |
PAIR |
VUL |
CONTRACT |
BY |
LEAD |
MADE |
PLUS |
MINUS |
+ |
– |
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1 |
11 |
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3H |
S |
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10 |
140 |
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2 |
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3 |
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4 |
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5 |
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6 |
12 |
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3NT |
N |
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9 |
400 |
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7 |
14 |
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3NT-3 |
N |
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6 |
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150 |
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8 |
16 |
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2H+2 |
S |
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10 |
170 |
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9 |
18 |
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3NT |
N |
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8 |
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50 |
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10 |
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11 |
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12 |
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13 |
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The completed result from the board was 2/16 and not 2/10 so I was out. Although there were heart games bid by NS in later rounds there was also additional silliness by NSs to allow EW to play in clubs, but it wasn’t an absolute bottom!.