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Expected Controls - The percentage of expected "2-1" controls (Ace = 2, King = 1 control) for 
balanced hands (4-3-3-3, 4-4-3-2, or 5-3-3-2 distribution) based on HCPs, first published in "Bridge World" (December, 1974)  by George Rosencrantz. 
      
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    | Expected Number of Controls for balanced 
    hands (row #'s in percentages - add to 100%)
 Predominant control numbers shown in RED
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    | Controls | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |  
    | HCP |  |  |  |  |  |  |  |  |  |  |  |  |  |  
    | 3 | 67 | 33 |  |  |  |  |  |  |  |  |  |  |  |  
    | 4 | 40 | 39 | 21 |  |  |  |  |  |  |  |  |  |  |  
    | 5 | 23 | 48 | 29 |  |  |  |  |  |  |  |  |  |  |  
    | 6 | 12 | 41 | 47 |  |  |  |  |  |  |  |  |  |  |  
    | 7 | 5 | 30 | 46 | 19 |  |  |  |  |  |  |  |  |  |  
    | 8 | 2 | 19 | 44 | 38 | 7 |  |  |  |  |  |  |  |  |  
    | 9 |  | 10 | 35 | 44 | 11 |  |  |  |  |  |  |  |  |  
    | 10 |  | 5 | 24 | 44 | 27 |  |  |  |  |  |  |  |  |  
    | 11 |  | 2 | 14 | 40 | 33 | 11 |  |  |  |  |  |  |  |  
    | 12 |  | 1 | 8 | 30 | 42 | 17 | 2 |  |  |  |  |  |  |  
    | 13 |  |  | 3 | 20 | 39 | 34 | 4 |  |  |  |  |  |  |  
    | 14 |  |  | 1 | 11 | 33 | 38 | 17 |  |  |  |  |  |  |  
    | 15 |  |  |  | 5 | 24 | 42 | 23 | 6 |  |  |  |  |  |  
    | 16 |  |  |  | 2 | 14 | 36 | 37 | 10 | 1 |  |  |  |  |  
    | 17 |  |  |  | 1 | 8 | 27 | 39 | 24 | 1 |  |  |  |  |  
    | 18 |  |  |  |  | 3 | 18 | 39 | 30 | 19 |  |  |  |  |  
    | 19 |  |  |  |  | 1 | 10 | 32 | 40 | 15 | 2 |  |  |  |  
    | 20 |  |  |  |  |  | 5 | 22 | 38 | 31 | 4 |  |  |  |  
    | 21 |  |  |  |  |  | 2 | 13 | 35 | 35 | 15 |  |  |  |  
    | 22 |  |  |  |  |  | 1 | 6 | 26 | 43 | 20 | 4 |  |  |  
    | 23 |  |  |  |  |  |  | 3 | 18 | 39 | 35 | 7 |  |  |  
    | 24 |  |  |  |  |  |  | 1 | 9 | 31 | 38 | 21 |  |  |  
    | 25 |  |  |  |  |  |  |  | 4 | 21 | 43 | 26 | 6 |  |  |  
    Card Distribution 
    (remaining two hands)Hand Distribution 
    (suits within a hand)
 High Card Point Count (HCPs in one hand)
 Miscellaneous Probabilities 
    (assorted interesting odds)
 Number of Cards (card quantity in 
    a suit)
 Posteriori Probability (example 
    when additional information is known)
 Suit Combinations (best lead and 
    plays)
 Expected Controls (based on HCP)
 
 Also see books on
    Probabilities
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