1 No Trump

1 No Trump

from 12 -15 hp or 26-31 zp,

balanced, 4333, 4432, 5332

no 4 card major


BRIDGECLUB GEEL


Lokaal:   Het Geels Brouwhuis

Nieuwstraat 41,    2440 Geel      047 0710214

                       

elke dinsdagavond om 19.30u stipt

een open bridgetornooi

Answers - undisturbed


  • Pass : to play


  • 2 :    The DUKE-convention (see Strategy in menu). The opener is expected to bid 2. The weak partner with a 5 card ♦ will pass or bid his 5 card major 2M.  Having a two suiter with 10-11hp, he can show this via 2NT (both minors),    3♣/♦  (5c ♣/♦ and 5c♥ ) and 3♥/♠ (5c ♣/♦ and 5c♠ )


  • 2♦ : RF, 10+, relay bid . Asking to describe further the hand of opener with the conventional sixpack-answer : s123/456 (min and no 5card,5c,5c) / (max and no 5card,5c,5c). Then the continuation is natural.


  • 2♥/ : RF, 10+hp, 5c ♥/♠  (no Jacoby transfer !) . Note that - due to the openings conditions - opener has ALWAYS a 3-2 or 3-3 card in the majors. His reply now is again stepwise simple :

s12 = min w/ 2-3c support M

s34 = max w/ 2-3c support M

s56 =  max , 2c M   with 5c ♣/♦

 

  • 2NT : NF, 10-11 hp,   


  • 3♣/♦: NF, 10-11 hp,6+c  ♣/♦
  • 3♥/ : NF, 8-9hp, 6+c ♥/♠


  • 3NT/4♥/ : to play

P

meaning

O

meaning

P

meaning

2♣

Duke

2

obligatory

pass, 2x

2NT,3x


see duke

2

RF, 10+hp

s123/56

min/max n0 5card,5c♣ ,5c



2♥/♠

RF, 10+hp, 5c♥/♠

s12/34/56

min, 2c,3c/max,2c,3c/max,2c,5c♣/



2NT

10-11hp, 

 




3♣/

10-11hp, 6c♣/





3♥/♠

8-9hp, 6c♥/♠





The 1NT  opening forms together with the 1♦ opening a tandem to treat all hands  without a 5 card major.

It is worthwhile to notice that Stayman is not necessary as the opening never contains a 4 card major. Yet, it hinders the opponents who have to enter the auction on level 2, not without risk.

When  opponents overcall  1 NT ?


If the opening is doubled, we apply the HELVIC procedure : 


  • 2x = two suiter in x and x+1
  • pass = or 9+hp  or two suiter in shape suits. If RHO passes, the opener must redouble. Partner with9+hp will now pass and else bid the lowest suit of his shape suits.


  • redouble = 5c in a suit to be named after pass by LHO and 2 bid by opener


If RHO does not pass, the opener may not bid anymore. The danger of a penalty double has disappeared.