Bridge computations

Scores

Better than an undoubled contract bid to the limit of the hand.
Better than a doubled contract bid to the limit of the hand.
Better than a redoubled contract bid to the limit of the hand.
The contract must be bid to the limit of the hand.

The tables show what you can score on a contract that makes. Some of the fields are coloured like this, like this, or like this. They represent doubled or redoubled contracts. That a field has been coloured in this way, means that the underbid contract scores better than the corresponding contract bid to the limit.

Example:
1 minor, not vulnerable, doubled, made with an overtrick scores 240 points. If instead you bid 2 minor and it makes, you get 90 points. So it's better to play it as 1 minor doubled.
If you bid 2 minor and get it doubled and it makes, you get 180 points. It's still better to play it as 1 minor doubled.
However if 2 minor is redoubled, you get 560 points which is better than the other results.

Therefore the field corresponding to 1 minor, not vulnerable, doubled, 1 overtrick, has this colour.

This colour means that there is no (re)doubled contract on a lower level that scores as much (same suit and number of tricks). It must be bid to the limit.

Uncoloured fields mean that there is another contract with the same number of tricks that scores better.

This colour coding may seem superfluous - you can't order the opponents to double. Nevertheless I think that it gives you an idea of some conditions about doubled/redoubled contracts, and anyway one can just ignore the colouring.

Not vulnerable
BidWonUndoubledDoubledRedoubled
 minormajorsans  minormajorsans  minormajorsans  
11708090140160180230520560
1290110120240260280430720760
13110140150340360380630920960
1413017018044046048083011201160
15150200210540560580103013201360
16170230240640660680123015201560
17190260270740760780143017201760
 UndoubledDoubledRedoubled
2290110120180470490560640680
23110140150280570590760840880
2413017018038067069096010401080
25150200210480770790116012401280
26170230240580870890136014401480
27190260270680970990156016401680
 UndoubledDoubledRedoubled
33110140400470530550640760800
341301704305706306508409601000
35150200460670730750104011601200
36170230490770830850124013601400
37190260520870930950144015601600
 UndoubledDoubledRedoubled
44130420430510590610720880920
4515045046061069071092010801120
46170480490710790810112012801320
47190510520810890910132014801520
 UndoubledDoubledRedoubled
5540045046055065067080010001040
56420480490650750770100012001240
57440510520750850870120014001440
 UndoubledDoubledRedoubled
66920980990109012101230138016201660
6794010101020119013101330158018201860
 UndoubledDoubledRedoubled
77144015101520163017701790196022402280
 
Vulnerable
BidWonUndoubledDoubledRedoubled
 minormajorsans  minormajorsans  minormajorsans  
11708090140160180230720760
129011012034036038063011201160
13110140150540560580103015201560
14130170180740760780143019201960
15150200210940960980183023202360
16170230240114011601180223027202760
17190260270134013601380263031203160
 UndoubledDoubledRedoubled
2290110120180670690760840880
23110140150380870890116012401280
2413017018058010701090156016401680
2515020021078012701290196020402080
2617023024098014701490236024402480
27190260270118016701690276028402880
 UndoubledDoubledRedoubled
331101406006707307508409601000
34130170630870930950124013601400
35150200660107011301150164017601800
36170230690127013301350204021602200
37190260720147015301550244025602600
 UndoubledDoubledRedoubled
4413062063071079081092010801120
451506506609109901010132014801520
46170680690111011901210172018801920
47190710720131013901410212022802320
 UndoubledDoubledRedoubled
55600650660750850870100012001240
5662068069095010501070140016001640
57640710720115012501270180020002040
 UndoubledDoubledRedoubled
66137014301440154016601680183020702110
67139014601470174018601880223024702510
 UndoubledDoubledRedoubled
77214022102220233024702490266029402980
 

Sidst rettet 9/10-2017.