1 No Trump
from 12 -15 hp or 26-31 zp,
balanced, 4333, 4432, 5332
no 4 card major
lokaal Geels Brouwhuis
Nieuwstraat 41, 2440 Geel 047 0710214
elke dinsdagavond om 19.30u stipt een open bridgetornooi
Answers - undisturbed
s12 = min w/ 2-3c support M
s34 = max w/ 2-3c support M
s56 = max , 2c M with 5c ♣/♦
min/max n0 5card,5c♣ ,5c♦
RF, 10+hp, 5c♥/♠
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 :
If RHO does not pass, the opener may not bid anymore. The danger of a penalty double has disappeared.