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