- first-round control (either Ace or void)
- second-round control (either King or singleton)
- absence of 1st or 2nd round control.
1. What does East show by 3? He shows a limit raise with at least a four-card fit and 10-11 HCP. In case East is unbalanced (any singleton) then might have as much as 8 HCP.
2. Should West be interested in slam? Yes he should, because East can have the missing key-card and the Q or the valuable KQ or K and shortness with five trumps or whatever.
3. It is correct from West point of view to ask directly for key-cards over the 3 bid? No, it is not, because West is looking for specific controls. For this reason he should start cue-bidding.
4. What should be the continuation over 3? A) In case West holds a control in spades (Ace or void or King or singleton) he should show that by bidding 3. B) As long as he holds two small cards he should bypass the 3 bid.
5. Bypassing 3 next is the 3NT bid. What 3NT would show? In modem bidding systems this bid is played as Serious or Non-serious about slam prospects. That means that 3NT is not a proposal for another contract (showing perhaps a balanced shape) but shows interesting in slam. A) In case you play 3NT as Serious it shows a strong intention to slam and forces East to cue-bid any control he has. Otherwise, if West makes a cue-bid at the four level he shows a less strong intention to slam and East can sign-off if he’s minimum. B) In case you prefer to play the 3NT bid as Non-serious then the opposite happens, i.e. East can sign-off if he’s minimum over West’s 3NT or start cue-bidding if he’s maximum; and East is forced to cue-bid regardless his strength if West cue-bids (i.e. when West bypass 3NT). In this text we assume that 3NT is always Non-serious.
6. Now we have reached the most critical point of the bidding because West has to evaluate his hand and he must decide what kind of information should be transmitted to his partner. The evaluation depends on several factors such as the point range (shown previously by his partner-East), the overall strength, the shape, the controls and the key-cards of his holding. Avoid classifying the above in order of Importance was done on purpose. If the strength of partner’s hand is unlimited (e.g. 1-2-2NT-3) then we need to show in order of priority: a) the overall strength of our hand. b) our distribution and c) our key-cards. But if the strength of partner’s hand is limited (like in our example) then we must classify our hand in order of priority: a) the keycards, b) the distribution and c) the overall strength.
7) In our example West is holding four KC’s a nice distribution and a non minimum hand (16 HCP) but still a 5 loser hand. East promised a limited hand so it is too much to expect from East to cover 4 losers but still slam it’s possible. Therefoe east should evaluate his hand as Non-Serious. Let’s evaluate some hands:
8) Therefore, West must evaluate his hand as Non-Serious and bid 3NT bypassing 3 since doesn’t have a control in spades.
9. What does East realize from 3NT bid by West? East knows after 3NT that: A) West is interested in slam otherwise he would bid 4over 3; B) he doesn’t hold control in spades otherwise he would bid 3 over 3; C) he holds either a medium-strength hand with a lot of key-cards (at least three) or a strong hand with a few KCs (up to two) otherwise West would have bypassed 3NT and cue something as Serious.
10. After 3NT East’s first priority is to decide whether his holding is worth a cue-bid or is not worth and therefore should sign-off in 4. In the first case he should examine if he holds a control in spades which is the suit that West has already showed no control (second priority).
11. How does East show control in spades? He shows it by simply not signing-off in 4; therefore either with 4/4/4 /4NT/5. What do all these bids show? a. 4 shows control in spades but NOT control in clubs. In that case, provided that West also has no control in clubs, he will sign-off in 4 immediately otherwise continues cue-bidding. b. 4 shows control in spades, control in clubs but NOT control in diamonds. In that case, provided that West also has no control in diamonds, West will sign-off in 4 immediately; c. 4control in spades, control in clubs, control in diamonds and one KC (Odd KCs) d. 4NT shows one control in spades, control in clubs & diamonds and even KCs (two KCs for sure otherwise he shouldn’t evaluate his hand as maximum earlier)
12. East’s hand is neither to weak for a sign-off bid (e.g. Kxx Qxxx Kx Qxxx) nor to strong (e.g. Axx xxxx Kxxx Kx). But due to the 3 controls and the key-card he should evaluate the hand as strong having in mind to pull the breaks on next bid. So East’s bid over West’s 3NT is 4(showing theK and denying diamond control at the same time).
13. West continues cue-bidding with 4NT (Even KCs) and control in‘ s having in mind to proceed in slam in case East is holding either one key-card or the Q as long as East is holding the K (the most valuable card in the deck).
14. West continues with 4NT showing even key-cards (four KCs for sure). After 4NT East knows that partnership holds all the KCs but he doesn’t know if partner holds the Q. To show that he bids 5NT sending the message “Partner we have all KCs but I don’t have the Q. Besides I don’t have any other control except that in spades and clubs”.
In our example the worst error was not to mention the absence of spade control by West and that the 4would show spade and club control and no diamond control. On the other hand the attempt is correct since the hand has over 50% chance of success for twelve tricks.
To sum up the correct bidding should be:
At this point one might wonder: “why should play TURBO and not RKCB? 1.e. after 4 by East, West knows enough and can simply bid Blackwood ending in 6 exchanging the same information?” In this case you are right. There is no benefit by playing TURBO but consider the following simply argument. In case the partnership was playing Serious 3NT then West should bid 4 over 3 to show mid invitation in slam. After 4 East should bid 4 to show control in spades but no control in diamonds. Now there is ambiguity about clubs and West cannot bid Blackwood because he doesn’t know East’s valuable control in clubs.
BUT if TURBO was used then East can continue cue-bidding and bid 5showing the club control. Below is shown how the bidding had to go in case partnership played Serious3NT;
East’s 4 promised spade control and denied diamond control. Since West had diamond control he showed by not bid 4. West’s 4NT showed diamond control and even KCs . What 4by East will show? East’s 4 would not a cue-bid since East had already denied spade control, therefore 4 would show something completely irrelevant to spades; 4 would show the trump queen. Therefore, East’s 4NT denied also theQ. East doesn’t know whether West holds 2 or 4 KCs but that will be clarified in the next round.
Next East bids 5showing club control and Odd KCs. In case East holds the Q and no club control he would bid 5. As we said previously 5cannot show control since East has already denied diamond control. 5would show the trump queen. 5over 4NT would show no club control and no Q. In case West hold Just 2 KCs he would bid 5over any bid by West. Now If West holds 2 KCs he would bid 6.
Do all previous presentation and remarks are somewhat complicated? Certainly they are, besides nobody said that TURBO is an easy convention.
Before continuing with the rest of TURBO, we will see some amazing techniques by using TURBO in defensive and competitive bidding. From this point we should keep some basics like:
1. To activate the TURBO convention one of the partnership should start cue-bidding and the other cooperate continuing cue-bidding up to 4NT.
2. TURBO is the process where the 4NT bid shows an even number of key-cards (0/2/4) and bypassing the 4NT bid, bidding anything at 5-level, shows an odd number of KCs (1 /3/5). Remember that we do not show key-cards at the third or the forth level but only controls. Only 4NT or when bypass 4NT we show number of KCs.
3. TURBO is used when a fit is established previously and therefore there are five key-cards, the four Aces and the King of trumps.
4. TURBO works with Italian cue-bids which means that controls in suits are shown up the line, which means that if a suit is bypassed denotes absent of control in that suit. Controls consider either the Ace (Ax+) or the King (Kx+) or a void or a singleton.
5. When any of the partnership discover the absence of a control in a suit he must transfer that information by signing-off to the cheapest game-level. In case one holds a control in a suit that already bypassed by his partner (i.e. showing no control in that suit) he must also show that by not signing-off. He should bid a suit that he doesn’t have a control (up-the-line) and bypass suit or suits with control.
6. The ambiguity that created playing TURBO about the exact number of key-cards (0/2/4 or 1 /3/5) is the most serious reason the convention is not accepted by many. Extremely important is the information about the strength and good features of partner’s hand. The partnership who plays TURBO must have a robust, disciplined and well-documented system where the exact strength comes from the context of the bidding. There is no clear rule. Players must deduce partner’s intentions and draw conclusions from the previous bids. In the following examples used the bidding systems of Bocchi-Madala, Lauria-Versace, etc. All systems provide the ability for the description of the shape and the range of strength of the hands and the establishment of the trump suit before the four level where the cues begin.
This hand demonstrates the usefulness of TURBO in competition. West can easily check for key-cards and a possiblevoid in East’s hand. Firstly started by showing that he holds even KCs (4). East now knows that two KCs are missing (in case West has just two) and signs-off (5). In case East had hold 2 KCs he would have cue with 4. In case West had hold 4 KCs he could have continued cue-bidding or bid the slam. Of course in case West had hold 4 KCs he would have reached 6.
The Trump Queen
Checking for the trump queen is like checking for controls and key-cards by cue-bidding smoothly up the line. The first who bid at the five level shows if he is holding or not the trump queen. The key-bids are 5and 5NT. Both 5and 5NT bids deny, at first, the trump queen and at the same time 5NT send the message that the partnership hold all key-cards (the 4 Aces plus the trump king) and no other king. In opposite 5 may be just a cue if earlier no one promised control in clubs or when clubs is one’s second longest suit. On the other hand any other bid at the five level is a cue showing also odd key-cards and the trump queen. Finally, bidding directly the trump suit at the five level shows odd key-cards and the trump queen but denies any other control.
Thus, the impression that the check of the trump queen is made above the 5 level of the established suit is completely wrong. At least in the modern versions of TURBO. On the other hand the way of finding the trump queen is different compared to the RKCB method and also is more complicated. The most important thing to be noted is that, as in the cue-bid process, we do not ask for the queen (like in RKCB) but instead say if we have it or not during cue-bidding. There are several ways in which we declare the possession or not of the trump queen. Let’s see some examples.
The system used here is that of Lauria-Versace. A new element involved here is the procedure to be followed when we get doubled during cue-bidding.
Bidding:
1– could be up to 19 HCP unbalanced but with at least 5 losers.
2 – check-back; Invite or better,
2 – 3-card fit in hearts; unbalanced (min or max, but up to 15 hcp),
The bidding system which has been used in the above example has nothing to do with the Bocchi-Madala bidding sequence actually used.
Bidding: 3= both minors 5+4+ or 6+minor slam invitational
4 = 4/5, no 4 (3NT without a 4+ minor)
4= even KCs (two KCs for sure from Madala’s point of view)
4 = asks for the Q
5 = I have it plus control in spades (without the Q but with 6 cards in s he would have bid 4NT) and of course without the Q and with 5 he would have bid in 5.
7 = Wow! Madala easily counts 13 tricks (14 actually) holding the valuable doubleton KQ (Kx would be also enough).
In the above example is showed the way we use the 4 bid (the very next suit) to find the trump queen. Also it is pretty clear that logic plays a significant role in the cue-bidding process. Playing TURBO every hand is an adventure; there are not easy hands. Suppose some small changes in the above example:
The bidding would be the same up to 5. But 5 would denied the K (as it was explained earlier) and therefore SOUTH would bid just the small slam. When one shows a two-suited hand, the worst holding in a suit for his partner is three small cards.
Finally suppose, in the above example, that NORTH holds:
. How would be possible for SOUTH to find the Q and bid the grand? Well, as we said previously, we should involve logic! SOUTH after 5 should bid 6. What 6 could be? SOUTH knows that NORTH does not have the K( therefore the 6 shows Kxx and asks for the Q.
The Trump Queen when clubs is trumps, Kick Back Turbo & Turbo a la Lauria
You may have noticed that so far did not given example with clubs as trumps. This was done deliberately because it is not possible to use the 5 bid as an in-between bid to show or not to show the Q. The solution is to use the 4bid as TURBO and the 4NT bid to show the Q. Therefore, by not bidding 4NT, during cue-bidding, we deny the Q. This method called “Kickback TURBO” and is similar to “Kickback Blackwood” when we ask for keycards with 4 (instead of 4NT) when hearts is trumps.
An obvious question would be: “Why not use the same principle when diamonds or even hearts is trumps?” That means that we could use the 4as TURBO when diamonds is trumps suit and 4 when hearts is trumps. The answer has been given previously concerning the technique we use when a cue-bid is doubled. When the 4 bid is used for TURBO, (and thus not promising a control in diamonds), then in case 4 is doubled, is not possible to evaluate the diamond suit without doubt. Remember when 4 is doubled then: re-double shows A or void, pass shows at least a weak doubleton and continuing bidding shows either singleton or the K or Q at least doubletons. But in case 4 not promising the K then we cannot take advantage of the Q and the control in diamonds is ambiguous. The GAZZILLI convention is implemented here.
Bidding:
2NT = 6 and 4m, 15+ hcp,
3= relay,
Other bids:
2would show less than 3-cards in hearts / 2 would show a 3-card fit in hearts balanced 12-14 HCP / 2NT would show 4225 15-19 HCP /3 would show 4054 with extras/ 3 would show 4and 6+with extras
3 – sets hearts as trumps, slam invitational or better, relay,
3 – 4351 shape, maximum or good hand,
3 would show a 4360 shape maximum/3 a 4360 minimum/3NT would show 4351 min,
4 – cue and, because South is known to have shortness there he implies the A or void
4 cue. At this point we have an opportunity to show how to continue when opponents double a cue-bid. First we must consider that double shows values (ace or king) and not only length. As already mentioned cue-bids promise first or second round controls (i.e. either Ace or void or King at least doubleton or any singleton). Therefore double is dangerous only when a) the one who makes the cue-bid is exposed to the opening lead (the lead is going to take his partner) and b) he holds a King at least doubleton. How his partner reacts over double? Well, pass would show at least a weak doubleton, re-double would show either an ace or void and by continuing cue-bidding would show either the king or the queen or a singleton. After pass (at least a weak doubleton) the one who makes the cue that was doubled can either: a) re-double to show a first round control, or b)contlnue cue-bidding to show a singleton or KQ, or c) bid the trump suit at the cheapest level to show a king at least doubleton (normally to play it).
4NT – TURBO, i.e. even key-cards and in this case two KCs for sure because he wouldn’t show a maximum hand previously (3) without any key-card.
5NT – Informs partner that not missing any key-card but missing the trump queen.
6 – a reasonable contract with chances of success over 50%.
The following example shows the use of TURBO at the 5-level in conjuction with the trump queen.
3 = 4 6, 3-7 HCP
3 = 3, balanced, 4-6 HCP
3 = weak 6-card suit without 2 and without a 4-card minor,
3NT = 64, 18+ HCP (other bids: 3=64 15-17/3=64 15-17/3=64 18+ hcp).
4 = sets a as trumps.
4 = cue with Odd key-cards i.e. either 3 or 5; 4 would show even key-cards.
4NT = shows theQ no control and at least one key-card (without any KC would bid 5).
5 = promises at least 3 key-cards and control in spades.
The key bid here is the 4NT which promises three things: 1) the Q according to our agreement when clubs is trumps, 2) no control in spades since SOUTH by-passed the spade cue-bid, and 3) at least one key-card since NORTH could easily has only 3.
One could wonder about the control in diamonds in the above agreement? Who controls diamonds and how can we show that. Well there is a hole indeed. Some play the 4NT as a diamond cue-bid but lose this bid to show the queen of clubs. There is a way to maximize the chances to have control in diamonds. It’s called VTL (Variant Turbo Lauria) from his inventor the world champion Lorenzo Lauria.
The VTL (Variant Turbo Lauria) is used only when clubs is trumps. The 4 trigger the VTL and shows odd key-cards. By by-passing 4 it shows even keycards and 4NT shows always the Q. Let’s see how it works:
In the above example the 4bid shows control in hearts and even key-cards (VTL). Later 4NT shows the Q. Try to bid the hand using RKCB or Minorwood or Redwood. SOUTH 3NT did not promise the K (might had Qxx) and thus NORTH has a doubt about the heart suit.
Another solution, is implemented when the club suit established at an earlier stage (e.g. at 3 level). According to this method the first who bid 4 (during cue-bidding up-the-line) denies the Q, whereas when 4 is by-passed promises the Q. Of course 4 replaces TURBO and 4NT shows control in diamonds.
Bidding:
2 Game forcing plus, either a) unbalanced with clubs the longest suit, or b) any balanced at least with 2
3 any 6(322), 15+ HCP
3relay, promises 15+ HCP or 13+ HCP with at least 6 controls,
315-17 HCP,
4 sets clubs as trumps, cue, even key-cards, promises Q
In case SOUTH had not held the Q he would have bid 4
In case SOUTH had held the Q and odd key-cards he would have bid 4 (TURBO)
4NT = control in diamonds, denies control in spades, promises 3 key-cards otherwise he would bid 6
5shows the AK because: Since SOUTH shows 2 key-cards the A and the A are already known to NORTH. Also the K is known from the cue-bid. Thus 5promises something extra: the K. It should be noted that in case SOUTH did not hold the K he should bid 6 over 4NT
7NORTH can count: 3 tricks in spades, 2 tricks in diamonds, 6 tricks in clubs and 2 tricks in hearts, total 13 tricks. The reason not to bid 7NT is that 4 from SOUTH could be just singleton. In the above sequence SOUTH has never promised a balanced hand.
Big Bang method
Are you ready now to venture out into deeper waters? Well, let’s see how Big Bang handling the matter.
Basically, Big Bang uses two methods to check for key-cards and controls dependent on whether the fit is in minors or in majors. Usually, in both cases, the Big Bang bidding system has considered the strength range (minimum [11-14 HCP], medium [15-17 HCP] or maximum [18+ HCP]) and the shape while establishing the trump suit. Due to this, when we are in the slam investigation zone (cues and key-card asking) we know enough, at least for one hand, in order to proceed accurately to the final contract. Of course there are several “special” bids at 4th level which act as Last-Train bids’ in case the exact strength and trump quality are unknown. The most important thing is that 4NT does not show even keycards but used as q-bid in all cases except when spades are trumps and in that case 4NT is used as RKCB.
1. Fit in major:
4NT is never TURBO but RKCB when spades is trumps.
When hearts is trumps then 4is RKBB (see below) and 4NT show control (A or K or shortness).
When q-bidding starts the first who identify controls in all suits can ask the number of keycards and the trump queen depending the trump suit (4 or 4NT).
2. Fit in minor:
In most cases fit in minor is established at 4th level (in cases where the fit is established at 3-level, repeating the trump suit at 4-level show different things depending developments previously). The very next bid (4 when clubs agreed as trumps and 4 when diamonds agreed as trumps) show even keycards (2 or 4, with zero keycards we jump to game immediately). Other bids show odd keycards and controls (A or K or shortness). After that we can either: a)continue q-bidding, or b)ask for the trump queen, or c)show intention for small or grand slam.
When one shows even keycards (4or 4depending the trump suit clubs or diamonds respectively) then later 4NT bid up the line shows control in that suit (or ).
As you will discover in the next few examples or when you watch LAVAZZA team in action, Big Bang uses lot of bids to check for controls, number of keycards with or without voids, the trump queen and minimum or maximum hands. The system is accurate but very complex and not easy to play it effectively without practice and hard work.
“Last Train” convention was invented by Jeff Meckstroth and named also by him from the Monkees song “Last Train to Clarksville”. Initially the convention was used to show mild slam values and triggered by bidding the suit just below the game level (i.e. 4 when is the trump suit and 4 when is trumps). Nowadays the convention used to show also minimum values, acting as a break, just before any slam attempt.
RKBB or Roman Kick-Back Blackwood is identical to RKCB (Roman KeyCard Blackwood) when spades is trumps. Most players has realized that using 4NT as RKCB when hearts is trumps there is a problem to find the trump queen when answerer uses the second step (i.e. 4). The next bid is 5, and is not possible to know if that is a sign-off because a keycard is missing or an asking bid to find the Q. The solution is to use 4as keycard asking bid and use the same number of steps and meanings similar to RKCB. At first it sounds easy to play it but you must discuss it and practice with your partner.
Biding according to Big Bang system:
1 5+UNBAL or 1444 or 4441, 11+ HCP
1NT either balanced or 5+UNBAL or 5+ UNBAL, GF+
3 6(322) either 11-14 HCP or 18+ HCP
4 sets as trumps, asks cues and keycards
4 Even keycards i.e. 2 or 4 (with 0 he would have signed-off at 5)
4 cue and promises at least 2 keycards. With one keycard he would have signed-off at 5
4NT cue, the suit which substitute previously to show even keycards
5 cue
5 not forcing, nothing else to show and minimum (is the first time West showed the 11-14 range)
5 shows interest for grand slam promising the Q and forces West to continue q-bids
6declines invitation for 7 with super minimum and uncertain values in clubs
7 I think I make it despite your super minimum
Notes:
- This is an amazing hand where the bidding system provides the necessary tools to allow critical information to be transmitted between EW in order to reach this marginal grand.
- After 3 East knew that: a) West had no shortness and b) he didn’t need to look for the Q (10-card fit)
- After 4 East knew that West had 2 keycards. If these keycards were A and K grand would be easy. So he continued q-bidding to collect more information.
- 4NT showed control in s and for sure the A because: a)West showed no shortness with 3and b) East held the K.
- In order to found the other keycard East q-bid 5(as grand slam attempt) in order to force West to q-bid the A. In case West had bid 6then East would have signed-off in 6. Since West denied the A then held for sure the K (the second keycard he promised with 4).