ACOL + Structural change = Beta ACOL
Beta has a number of far reaching changes versus ACOL:
- Reversing values are NOT required by Beta ACOL - Preparedness considerations do NOT arise naturally in Beta ACOL
is independent of a fixed 1NT opening bid strength! Its your choice -
any 3 point range within 12-17 even varying with vulnerabilities! We strongly recommend 12-14HCP as this somewhat limits a Beta 1 opening. Note: the text on this site is based on this
- We utilise a 1NT wide ranging 12-16 rebid and a forcing Crowhurst 2
This has important side effects: It allows Beta to achieve a wider
usage of this economical rebid; it also allows us to mildly restrict
the opening 1NT by imposing 'minimums' on minor holdings, to attain a higher degree of safety while not at all
losing its potency to give opponents difficulties.
- Similarly, Beta's rebid of 2NT 12-14 following a 2-level
response, with a flexible 'other minor' inquiry again protects us from
'reversing values' tentacles. 'Other' minor inquiry is used for continuations. E.g.: 1 - 2 - 2NT - 3! - 3 (5 card) - 4 - Also following our RULE that a a new suit at the 3-level is FORCING! Note: 1 - 2 - 2 in Beta would show a 6 card suit.
- Beta proudly uses strongish 2's in the Majors. This has far
reaching and important side effects: It has a clear cut definition of a
rigorous 4-5 LTC, it also limits the top end range of 1Major openings to circa 15-17(18).
Its distribution is either a 5+ Major and a 4 card side suit OR a 6+
card major. We prefer presence of a shortage: 5-4-3-1 or 6-3-3-1. Minimum 5422 5LTC are perhaps best opened 1Ma.
These strong two's was a key necessary requirement (amongst
others) in order to be able to ditch the need for requiring
- We utilise a 2 Multi with 3 legs to cover weak
2's in Majors & to code for a 19-20
Balanced NT and a 3rd leg to handle two important 5-5 or better <(=)7LTC hands namely - & - .
- High level balanced hands 19+ HCP
hands have sequences providing 2 point ranges for higher
precision. 2 opening for 19-20, 2N opening for 21-22, 2 opening for
23-24 & 25+ and a 2N jump rebid shows 17-18. Each of these may contain a 5 card Major too - unravelled by 3 Puppet inquiry for 4¦5 card Majors and all other Puppet transfers too!... 3->3, 3->3, 3->3N & 4->4, 3N->4 some the previous 2 difficult, also 4->4 & 4->4. 4N: Quantitative - continuations Blackwood or PASS
- Freely made suit rebids show a 6 card suit, 5
is allowed only following an inquiry bid. A rebid by a responder
is a strict STOP bid and a 6+ card suit.
- A new suit with jump by opener is a short suit (1)-2-3 cards with usually 2 top honours in a single-suited hand usually (15)16+ DP. There are 2 exceptions 1 or - any - 3C rebid shows a 5-5 or better.
change of suit is to be considered as forcing - usual NF escape is a NT
limited bid but PASS can be used discretionally but partner may become
distraught! Also a 2N rebid WITHOUT JUMP promises NO more strength than PREVIOUSLY bids have shown.
major step taken in Beta's evolution is to provide a separate path for
all hands 5-5 or better. These potentially powerful hands do need a
very different style of bidding to exploit them fully. It also
increases accuracy in other sequences when it is known that the
ditribution CANNOT be 5-5!