The secret to finding more slams is to look for more slams. The average small slam has around 28 HCP. The key to safely exploring 26-28 HCP slams is to exchange a maximum amount of information with your earliest bids. The Trump Asking Bid (TAB) is a concept pioneered by CC Wei in his Precision system. In 2/1 TAB the concept is retained but the application is far more compact. Using 2/1 TAB the responder, in his/her first call, makes two statements and asks a question. This provides much more information than any other system.
2/1 TAB is only used over major openings (1♠/1♥) it is used in conjunction with the 2/1 convention where: 2♣ response says nothing about clubs, instead, it shows game forcing values without support for opener’s suit, it is alertable. 2♦(TAB) shows: 1. Game forcing values and 3-card or better support for opener’s suit, and; 2. Asks the opener to show the top honors (AKQ) in his/her bid suit (TAB). After the opener identifies his/her top trump honors, generally, the responder can determine if the partnership should explore slam before responder’s second call, it's also helpful in deciding whether to try to play No Trump rather than a suit contract when you are missing top honors in your trump suit.
Let’s see how that works: After a Major opening and a 2♦ response, the opener on his/her first rebid shows which of top honors (AKQ) he/she holds in the agreed-upon major suit. This is done by first counting the HCP of the top honors (AKQ) using the familiar 4-3-2 HCP system. Each combination of High Honor Points (HHP) yields a unique value, making identification of specific honors a very easy task. For example, the KQ (K=3, Q=2) combination yields a combined HHP value of 5. No other combination of Top Honors will yield 5, it is unique to the KQ combination, similarly, 6 HHP is unique to the combination of AQ. The opener identifies his/her top honors by step bids corresponding to the HHP value starting with 2♥, the lowest possible bid after responder’s 2♦TAB response.
Opener’s 2nd call: High Honors in Opener’s suit: High Honor Pts. (HHP) Opener’s 2nd Call Q or less 0-2 2♥ K 3 2♠ A 4 2NT KQ 5 3♣ AQ 6 3♦ AK 7 3♥ AKQ 9 3♠
Useful memory aids are: 1. 2♥ is the lowest possible response it represents 0-2 HHP. 2. All 2-level calls are single honors, 3. 2NT = 4 HHP (an Ace, the highest single honor) 4. All 3 level calls are multiple honors. 5. 3♣ is the lowest possible multiple-honor call it represents the KQ (5 HHP) 6. The opener should never make a 2nd call beyond 3♠, that space is reserved for the responder’s 2nd call.
In all of the following cases, 2♦response is artificial showing game forcing values, confirming 3-card or better support in opener’s bid suit and asking the opener to identify his/her top honors. 2♦is artificial and therefore should be alerted.
*****************************************************************************************************************************Fig. 1:Opener’s 2nd call Opener’ hand: ♠-A76 ♥-JT7654 ♦-KQ ♣-AQ Call RHO Opener LHO Responder 1 1♥ Pass 2♦(TAB) 2 Pass 2♥(0-2 HHP)
2♥ is artificial, opener shows 0-2 HHP = Q or less in the trump suit, it is alterable. Note: any bid at the two-level shows only a single top honor.
*****************************************************************************************************************************Fig. 2: Opener’s 2nd call Opener’ hand: ♠-A76 ♥-AT654 ♦-K96 ♣-AT Call RHO Opener LHO Responder 1 1♥ Pass 2♦(TAB) 2 Pass 2NT (4 HHP) 2NT is artificial, opener shows 4-HHP = A in the trump suit, it is alterable. Note: any bid at the two-level shows only a single top honor.
*****************************************************************************************************************************Fig. 3: Opener’s 2nd call Opener’ hand: ♠-A76 ♥-KQ654 ♦-K96 ♣-QT Call RHO Opener LHO Responder 1 1♥ Pass 2♦(TAB) 2 Pass 3♣(5 HHP) 3♣ is artificial, opener shows 5-HHP = KQ in the trump suit, it is alterable. Note: any suit at the three level shows at least two of the top three honors.
*****************************************************************************************************************************Fig. 4: Responder’s 2nd call Opener’ hand: ♠-A76 ♥-KQ654 ♦-K96 ♣-QT Call RHO Opener LHO Responder 1 1♥ Pass 2♦(TAB) 2 Pass 3♣(5 HHP) Pass 3♠ 3♣ is artificial, opener shows 5-HHP = KQ in the trump suit, it is alterable. Note: any suit at the three level shows at least two of the top three honors. 3♠ responder shows a minimal balanced hand with a control in spades, probably not holding the ♥A, the opener is now captain.
*****************************************************************************************************************************Fig. 5: Responder’s 2nd call Opener’ hand: ♠-A76 ♥-KQ654 ♦-K96 ♣-QT Call RHO Opener LHO Responder 1 1♥ Pass 2♦(TAB) 2 Pass 3♣(5 HHP) Pass 3♥ 3♣ is artificial, opener shows 5-HHP = KQ in the trump suit, it is alterable. Note: any suit at the three level shows at least two of the top three honors. 3♥ responder, with more than a minimal hand, returns to Trump below game level, in a fashion similar to Jacoby 2NT. Opener is now captain.
*****************************************************************************************************************************Fig. 6: Responder’s 2nd call Opener’ hand: ♠-A76 ♥-KQ654 ♦-K96 ♣-QT Call RHO Opener LHO Responder 1 1♥ Pass 2♦(TAB) 2 Pass 3♣(5 HHP) Pass 4♥ 3♣ is artificial, opener shows 5-HHP = KQ in the trump suit, it is alterable. Note: any suit at the three level shows at least two of the top three honors. 4♥ responder shows a minimal unbalanced hand, opener is now captain.
***************************************************************************************************************************** When the responder is interested in exploring slam, he/she will employ another Precision concept, the Control Asking Bid (CAB) which a very simple method of identifying 1st, 2nd and even 3rd round controls. Control Asking Bids (CABs) are triggered by responders 2nd call of 3NT. CABs will be fully explored in my next article.
Early recognition of trump and identification of controls significantly changes the dynamics of slam exploration. With 2/1 TAB there is never a need to use Blackwood or 1430. Studies indicate that small slams with trump suits average about 28 HCP. 2/1 TAB will allow a partnership to safely explore (and find) many of these low HCP slams that others will miss.
Benefits include:
Plus... it's free!