SPLINTER-BIDS
When players are initially taught bridge, they basically only have one constructive method of raising partner’s opening bid (major) to the game level – change the suit and then jump raise.
(Note 1♥ – 4♥ is not a constructive raise – the bidding should then stop)
So 1♥ – 2♦ – 2♥ – 4♥ allows opener to possibly investigate a slam with a suitable hand.
With more experience, players adopt different methods:
(The above two approaches have virtually replaced the more old-fashioned Swiss type bids, which primarily show a game raise and particular aces).
Consider this hand when partner’s methods are limited to changing suit and then raising:
a)♠ AK7532
♥ KQ4
♦ 953
♣ 8
The bidding proceeds: 1♠ – 2♣ – 2♠ – 4♠ - ?
Your only sensible call is ‘pass’
Now let’s look at partner’s possible hands (South)
x)♠ Q986y)♠ Q986
♥ AJ7♥ AJ73
♦ 84♦ 8
♣ AQ62♣ AJ62
With hand (a) opposite (x) the limit of the contract is 4♠, but with hand (a) opposite (y) (which in hcp is actually weaker than x)) we want to be in 6♠.
The significant difference between the two hands is that y) contains a singleton (diamond).
Responder’s Bid
A Splinter bid enable responder (South) to tell opener (North) that he has a singleton (or void)
The bid has the following characteristics:
(all these requirements can be tuned with more experience)
So having identified that all the above are present a double jump in a suit (obviously not the trump suit) shows a singleton or void in that suit.
It’s usually bid in response to a major suit opening, but can also be used over a minor (for a slightly different reason).
(The bid is alertable).
So possible splinter sequences are, for example:
Over a major: 1♥ - 4♦; 1♠ – 4♣; 1♥ – 3♠; 1♠ – 4♥
- a) take care over this last sequence – it does not show a heart suit (some pairs do in fact use this to show a heart suit and have other methods to show the singleton heart – one I particularly like is 1♠ – 3NT to show a singleton heart, but only do this with experience and partnership agreement).
- b) you cannot use a 4♣ splinter if playing Gerber, so abandon Gerber
Over a minor: 1♦ – 3♠; 1♣ – 3♥; 1♣ – 3♦
- a) playing a short club opening (e.g.5-card majors), or possibly even better-minor (5-card majors) these bids should be avoided unless holding extra length in opener’s suit – you need to guarantee the 8-card fit between the hands.
So in our example hand (y) responder would bid 4♦ showing his (spade) trump support and a singleton diamond (he would also bid 4♦ with a diamond void).
Opener’s Rebid:
Whereas responder’s bid is fairly prescriptive, opener’s rebid requires some judgement. What opener has to consider is whether partner’s singleton (or void) is of any use to him.
As a general rule, honour values (except the ace) in partner’s splinter suit are often wasted. These should be discounted unless there are extra compensating values in the hand.
For example, KQ7, KJ5, Q92 are ‘wasted’ values opposite a singleton. In all three examples you only have at maximum one loser in the suit –and the honour cards are not ‘pulling their notional weight’. The honour cards may as well be small cards.
…..whereas holding say 984 opposite a single has no wasted values (again just one loser at most).
So, when holding wasted values opposite a singleton, sign-off in 4major (unless there are compensating values in the other suits).
Conversely when holding non-wasted values, opener should consider slam investigation with better than a minimum opening. When first employing splinter bids I suggest that opener should just use some form of Blackwood enquiry. With more experience opener himself can either further splinter or cue bid.
Returning to hand (y), after partner’s 4♦ splinter bid, opener with about a 14 point hand (12 hcp + 2 for the singleton), and no wasted points in the diamond suit should bid 4NT to assess slam possibilities (opener is also thinking that partner has ~ 11+ points, so his values must predominantly lie in hearts and clubs). Blackwood confirms the necessary aces, so 6♠ can be bid with confidence.
Altering opener's hand slightly (- ith responder still having hand (y) (repeated for convenience):
b)♠ AK7532c)♠ AK7532
♥ KQ4♥ Q94
♦ 95♦ K5
♣ K8♣ K8
♠ Q986♠ Q986
♥ AJ73♥ AJ73
♦ 8♦ 8
♣ AJ62♣ AJ62
1♠ – 4♦- ?
Hand (b) is effectively the same as the original opening hand (a) opposite the original hand (y), and if partner has ♣A (which he has), again opener can confidently bid 4NT and then the slam.
Hand (c) is not the same as the original hand (a), now having wasted values in the diamond suit (and fewer compensating values in the other heart side-suit). So now opener settles for 4♠.
Further examples:
d)♠ AK7532e)♠ A74f)♠ KQ105g)♠ A95h)♠ A95
♥ 954♥ KQ752♥ KQ752♥ KQ10♥ K73
♦ KQ4♦ KQ105♦ A74♦ KJ64♦ KJ64
♣ 87♣ 8♣ 8♣ K73♣ KQ10
♠ Q986♠ 9♠ 9♠ K76♠ K76
♥ AJ73♥ A983♥ A983♥ 9♥ 9
♦ 8♦ 842♦ 842♦ A952♦ A952
♣ AJ62♣ AKJ62♣ AKJ62♣ AJ862♣ AJ862
What If A Singleton Honour?
The experts differ in this situation, but I would recommend treating any singleton honour other than the ace, as if it were a spot card, i.e. the hcp of the hand in total, is reduced by the value of the honour.
With a singleton ace, I would treat as if a balanced hand (i.e. use Jacoby when more experienced). In the absence of Jacoby, change the suit and then raise.
Splinters After Interference
If the interference bid doesn’t squeeze out the possible splinter bid, then no change to the methods (interference bids bracketed)
e.g. 1♥ - (1♠) - 4♣ - splinter in clubs agreeing hearts
1♦ - (1♥) - 3♠ - splinter in spades agreeing diamonds
If however the splinter is squeezed out, again there is no difference except that the strong jump response is sacrificed instead of the splinter.
e.g. 1♥ – 2♦ – 3♣ - normal club suit raise
1♥ – 2♦ – 4♣ - splinter bid (singleton/void club, agreeing hearts), rather than a strong jump response
Other Splinter Situations (with more experience)
i)♠ Q3j)♠ 94k)♠ 94l)♠ 43
♥ A106♥ J102♥ Q64♥ KJ74
♦ AKJ75♦ 1095♦ KJ74♦ Q64
♣ 6♣ AK64♣ AK8♣ AK8
♠ AQ862♠ A82♠ AQJ852♠ AQJ852
♥ KJ98♥ AK9864♥ 9♥ 9
♦ 4♦ 8♦ A85♦ A85
♣ 973♣ Q73♣ Q73♣ Q73
AFH