© Chiel Verwoest
JACOBY TRANSFERS after 1 NT
 
OPENING RESPONSE REBID 2nd RESPONSE 2nd REBID
1 2 3 4 5
 
         
1 NT 2   tranfer >=0 2 © relay pass weak, 5+© < 8
a: 4-3-3-3   5+©   2 5-© +4- and weak < 8
b: 4-4-3-2   2 NT 5-©, limit 8 - 9
c: 5-3-3-2 3 5-© and 4-Kl, forcing >=12
d: 5-4-2-2 3 5-© and 4-, forcing >=12
  3 © 6+©, limit 8 - 9
3 splinter >=12
3 NT play 3 NT or 4 © ? >=10 pass choice
  4 © choice
4 splinter * >=12  
4 splinter >=12
4 © to play, 6+© 10-22
 
1 NT 2 ©   tranfer >=0 2 relay pass weak, 5+ < 8  
a: 4-3-3-3   5+   2 NT 5- limit 8 - 9
b: 4-4-3-2   3 5- and 4-Kl, forcing >=12
c: 5-3-3-2 3 5- and 4-, forcing >=12
d: 5-4-2-2 3 © 5- and 4-©, forcing >=12
  3 6+, limit 8 - 9
3 NT play 3 NT or 4 ? >=10 pass choice
  4 choice
4 splinter * >=12  
4 splinter >=12
4 © splinter >=12
4 to play, 6+ 10-22
 
1 NT 2 transfer >=0 3 relay pass weak, 6+Kl < 8  
    6+Kl     3 controls ? >=12 cheapest control
  3 3 NT or more? ~12 choice
 
1 NT 2 NT transfer >=0 3 relay pass weak, 6+ < 8  
      6+     3 © controls ? >=12 cheapest control
  3 3 NT or more? ~12 choice
 
1 NT 2 any transfer 2 DN** transfer refused, 4-© support, 17p DN=doubleton 3 the cheapest suit <= 9 pass
a: 4-3-3-3     3 NT*** please call the established suit on 4-level, or pass if you prefer >=10 choice
b: 4-4-3-2      
c: 5-3-3-2  
d: 5-4-2-2 2 NT** transfer refused, 4-© support, 17 p. 4-3-3-3-distribution 3 the cheapest suit <= 9 pass
    3 NT*** please call the established suit on 4-level, or pass if you prefer >=10 choice
     
 
 
1 NT 3 5Kl, 4 >=10 3 NT 4/5LK pass    
      singelton HK 3 fit in 3/4 the singleton suit >=12
 
1 NT 3 5, 4Kl >=10 3 NT 4/5LK pass      
      singleton HK 3 fit in 3/4 the singleton suit >=12
 
1 NT 3 © 6+© >=12 3 NT*** stop bid pass    
    3/4 controls ? 3/4
 
1 NT 3 6+ >=12 3 NT*** stop bid pass    
    4 controls ? 3/4
 
* When the trump suit has been established by a tranfer bid, Gerber is not applied any more. A splinter asks for controls.
** The 1 NT opener with 17 HCP's and 4+ in the established trump suit must refuse the tranfer always, and call in his weakest doubleton. In case of "a:" he calls 2 or 3 NT
*** Every different bid is a control bid which starts exchanging controls and stops when the game has been reached, 4 NT is called or 4 NT is surpassed.
 
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