BRIDGE CLUB OF LEXINGTON
Lexington, Kentucky --  859-245-9770

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Scoring:

Have you ever been curious about how pair games are scored and how the percentage is decided?  Here are the basics:

  • "Top on a Board" is one less than the total number of pairs playing in the whole game for a Howell movement or the number of pairs playing in one direction in a Mitchell  movement.
  • "Your Score" reflects how many other pairs you scored better than.  For example:  If there are 8 pairs playing N/S and you have the top score, you receive a 7 on the board.  You "beat" 7 other pairs.
  • If there are eight unique scores, the top pair would receive a 7, the next best score would receive a 6 and so on to the last score which would receive a 0.  However, as is frequently the case, several pairs may all make the same contract and tie on a board.  In this case the positions are averaged. 

    For example: On a given board played by 5 pairs,  lets say one pair bids 4 Hearts and make 5, two pair each make 4, one pair is set one trick and finally, one pair only bids 3 but makes 4.  When the scores are put in descending numerical order they would look like this:
    Pair Number 1 2 3 4 5
    Contract Bid 4
    Made 5
    Bid 4
    Made 4
    Bid 4
    Made 4
    Bid 3
    Made 4
    Bid 4
    Made 3
    Score 650 620 620 170 -100
    Place Score 4 2.5 2.5 1 0

    Note that pairs 2 and 3 tied with a score of 620.  Their scoring positions (3 and 2) are averaged and they each receive a 2.5.

  • "Percentage" is determined by following formula:

  • In this example the "top board" was 8, "your score" was 5 and this was a 24 board game.

  • The following three charts show the percentages awarded for 2 to 11 pairs in a 24, 27 or 28 board game which are the three most common numbers of boards played in a typical session.

Your Hand Score in a 28 Board Game

10 9 8 7 6 5 4 3 2 1 0

Top
on a
Board

10 3.57% 3.21% 2.86% 2.50% 2.14% 1.79% 1.43% 1.07% 0.71% 0.36% 0.00%
9   3.57% 3.17% 2.78% 2.38% 1.98% 1.59% 1.19% 0.79% 0.40% 0.00%
8     3.57% 3.13% 2.68% 2.23% 1.79% 1.34% 0.89% 0.45% 0.00%
7       3.57% 3.06% 2.55% 2.04% 1.53% 1.02% 0.51% 0.00%
6         3.57% 2.98% 2.38% 1.79% 1.19% 0.60% 0.00%
5           3.57% 2.86% 2.14% 1.43% 0.71% 0.00%
4             3.57% 2.68% 1.79% 0.89% 0.00%
3               3.57% 2.38% 1.19% 0.00%
2                 3.57% 1.79% 0.00%
1                   3.57% 0.00%
 

Your Hand Score in a 27 Board Game

10 9 8 7 6 5 4 3 2 1 0

Top
on a
Board

10 3.70% 3.33% 2.96% 2.59% 2.22% 1.85% 1.48% 1.11% 0.74% 0.37% 0.00%
9   3.70% 3.29% 2.88% 2.47% 2.06% 1.65% 1.23% 0.82% 0.41% 0.00%
8     3.70% 3.24% 2.78% 2.31% 1.85% 1.39% 0.93% 0.46% 0.00%
7       3.70% 3.17% 2.65% 2.12% 1.59% 1.06% 0.53% 0.00%
6         3.70% 3.09% 2.47% 1.85% 1.23% 0.62% 0.00%
5           3.70% 2.96% 2.22% 1.48% 0.74% 0.00%
4             3.70% 2.78% 1.85% 0.93% 0.00%
3               3.70% 2.47% 1.23% 0.00%
2                 3.70% 1.85% 0.00%
1                   3.70% 0.00%
 

Your Hand Score in a 24 Board Game

10 9 8 7 6 5 4 3 2 1 0

Top
on a
Board

10 4.17% 3.75% 3.33% 2.92% 2.50% 2.08% 1.67% 1.25% 0.83% 0.42% 0.00%
9   4.17% 3.70% 3.24% 2.78% 2.31% 1.85% 1.39% 0.93% 0.46% 0.00%
8     4.17% 3.65% 3.13% 2.60% 2.08% 1.56% 1.04% 0.52% 0.00%
7       4.17% 3.57% 2.98% 2.38% 1.79% 1.19% 0.60% 0.00%
6         4.17% 3.47% 2.78% 2.08% 1.39% 0.69% 0.00%
5           4.17% 3.33% 2.50% 1.67% 0.83% 0.00%
4             4.17% 3.13% 2.08% 1.04% 0.00%
3               4.17% 2.78% 1.39% 0.00%
2                 4.17% 2.08% 0.00%
1                   4.17% 0.00%
 
  • To determine the percentage for a 1/2 score, average the two adjacent numbers.  For example; in an 8 pair, 24 board game,  the percentage for a score of 3.5 is the average of the 3 (1.56%) and the 4 (2.08%) which is 1.82%

                      

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