Over 1, the conventional overcalls are as follows.
|2||At least 5-5 in and|
|2NT||At least 5-5 in and|
|3||At least 5-5 in and|
Over any other one-level opening:
|2NT||At least 5-5 in the two lowest-ranking suits|
|3||At least 5-5 in the two highest-ranking suits|
|Cuebid||At least 5-5 in the top and bottom suits|
Point strength needed for Ghestem depends on partnership agreement. Here are three possible approaches:
Compared to the Michaels cuebid, Ghestem always specifies exactly two suits. A Michaels major-suit cuebid, on the other hand, shows the other major and an unspecified minor.
But Ghestem has its own drawbacks. The 3 jump overcall loses its weak preemptive meaning and also forces the bidding up to the 3-level. Compare this to Michaels, in which a 2-level minor-suit cuebid lets the overcaller compete at the 2-level.
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