The ACBL Open Chart includes in the Disallowed section:
In segments of fewer than 6 boards, an Artificial 1-level opening bid showing length only in a known suit other than the one opened, unless that bid is also Strong and Forcing.
This means that a 1♥ opening which shows length in spades is disallowed (unless strong and forcing). But, it seems to me to allow some rather more tricky methods.
Which of these methods do you think are ALLOWED (not disallowed by this regulation)?
Please select up to 3 choices.
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