DOBI DOUBLE, over strong 1NT opening
‘memory of my lovely dog Dobi’
Double of strong 1NT, shows one major and one minor or good hand with long major suit and 8½ tricks, double of weak 1NT is penalty.
Pass
X ?
1NT
– 2§ : to play partners minor
– 2¨ : asks for major
– 2M : natural, good six cards
– 2N : asks for minor, then if 3©is bid, invitation in majors
– 3M : game invitation with good long suit
Pass
X 2§
?
1NT
Pass
– Pass : shows clubs and a major, not very strong
– 2¨ : shows diamonds and a major, not very strong
– 2© : shows very good hand with hearts and diamonds
– 2ª : shows very good hand with spades and diamonds
– 2NT : shows very good hand with hearts and clubs
– 3§ : shows very good hand with spades and clubs
Pass
X 2¨
?
1NT
Pass
– 2© : shows hearts and a minor, not very strong
– 2ª : shows spades and a minor, not very strong
– 2NT : shows very good hand with diamonds and a major
– 3§ : shows very good hand with clubs and a major
– Over 2NT, 3§ asks for the major; 3M is game forcing!
– Over 3§, 3¨ asks for the major; 3M is game forcing!
After 3M, partner raises to game or return original minor with other major!
Pass
Pass
X 2NT asking for minor
3m ?
1NT
Pass
– Pass : to play
– 3© : game invitation with (4-4) majors
– 3ª : forcing to game with (4-4) majors
(LHO bids 4ª or turns to original minor to transfer to hearts)
Pass
Pass
X 2NT
3m 3©
?
1NT
Pass
– Pass : minimum with hearts
– 3ª : minimum with spades
– 4© : maximum with hearts
– 4m : (turn to original minor) maximum with spades
Pass
Pass
X 2¨ asking for major
2M 2NT invitational relay
1NT
Pass
If responder uses 2NT, after 2¨
– with 5m/4M and minimum, bid original minor
– with 5m/4M and maximum, bid 3NT
– with 5M and minimum, rebid major
– with 5M and maximum, bid other major!
Pass
Pass
X 2¨ asking major
2M 3§ choice for minor
1NT
Pass
If responder redoubles:
XX
X ?
1NT
– Pass : shows one long minor
– Others : played as in the system
XX
X Pass
?
1NT
Pass
– 2§ : normal bid, to give the partner a chance to show his minor suit
– 2¨ : shows long good diamonds and void or singleton club
if the suit is not very good, must bid 2§ with singleton