Only the Acol bidding system is allowed. (Although substitutes may play their own system.)
- The normal system is that an opening 1NT is weak (12-14) and an opening 2NT is strong (20-22). Such bids do not require alerting. Any other ranges of an opening NT are the exception and need to be alerted.
- Openings of 1 of a major must be of 4+ cards. Any other partnership agreements need to be alerted.
- Multi-2s and other unusual conventions which some players include with Acol are allowed, but must be alerted.
- In every other situation, normal alerting rules apply.
PSYCHES and HUMS are not allowed. Please report players who bid psyches and HUMS to the TD.