How to use "Probability on Contract Bridge"

Function

Calculate probability of defender's break

Step

  1. Input vacant places of two defenders (LHO and RHO).
  2. Check "condition" as many as you want to calculate.
  3. Input card holdings of LHO and RHO.
    • Do not input "space".
    • You may specifyAKQJT. Wild card isX. Honor wild card isH. Input order is AKQJT, H, and then X
    • To double probability, check "x2".
  4. Click "Calculate"

Result

Probability of each condition and total probability will be calculated.

Example

  1. When five cards are missing, calculate probability of LHO=3, RHO=2.

    LHO RHO
    Condition 1 XXX XX

  2. When five cards are missing, someone has doubleton of Q

    LHO RHO
    Condition 1 QX XXX x 2

  3. Your hand isAKT9XX and dummy isX. Calculate odds of getting 5 tricks or more by playing A,K first.

    LHO RHO
    Condition 1 XXX XXX
    Condition 2 HX HXXX x 2
    Condition 3 QJ XXXX x 2

  4. Your hand isAK98X, dummy isXX Calculate probability of getting 4 tricks by playingA,K first.

    LHO RHO
    Condition 1 XXX XXX
    Condition 2 HH HXXX x 2

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