When we overcall the Opponent's opening bid with 1NT, that shows 15-18 HCP
with a stopper, and "systems on".
While that is adequate, one danger which is much greater is that we might
get doubled. So we define good runouts:
Opponents Double our 1NT Overcall
In the discussion that follows, we assume the Opponent's suit is ♠,
and ♣=low unbid suit, ♦=middle unbid suit, ♥=high unbid suit. But
the system works for any three unbid suits.
- PALERT - Forces redouble.
- 2♣,2♦,2♥ - To play.
- XXALERT - Shows ♣ and ♦.
After Pass forcing Redouble
Assuming the Opponents have been quiet so far, Advancer's choices are:
- Pass - penalty, let's play 1NT-XX!
- 2♣ALERT - ♣ and ♥
- 2♦ALERT - ♦ and ♥