When is a Bid Eta?
A bid is Eta in the following situations:
- If Responder has shown an 11+ point 4441-shape hand by jumping at the 3-level in the suit below the singleton over
a 1♣ Opening, the first bid in one of their 4-card suits is Eta, but if they make a Beta Ask first and the first
bid in one of Responder's 4-card suits is at game level, then this is a sign-off rather than Eta.
- If Responder has shown an 8-10 point 4441-shape hand by using the Impossible Negative, then
Eta Asks are only ever permitted below game level.
- In 2♣ sequences where Opener shows a 4-card Major, then an immediate jump-shift
in the other Major is Eta in Opener's Major (See Two Clubs Openings).
- Where a 2♦ Opening is made and Responder has shown values,
Eta Asks are permitted below game level if a Beta Ask has not been made first. If Beta has already been used first, then any bid
in one of Opener's 4-card suits is a sign-off. [In practice this only occurs when Responder has shown a 14+ hand with both minors
or Both Majors and where Responder ends up as the Captain of the Hand. Where Opener ends up at the Captain
in these circumstances, the Asking Bids are Gamma (min Length 4) rather than Eta].
