Splinter raises : 1 - 8
SPL 1 Bidding : 1♠ - 4♠      
Opener
A Q J 10 7
5 3
8 4 2
A K 5
  Responder
K 9 8 3
A 9 7 2
9
10 9 7 4


This type of Response hand usually counts 8 losers. Because of its shape and abundance of trumps you may deduct 1 loser of the total.

With this kind of Responder hand (6-10 HCP, 4+ trumps plus a singleton or void, no singleton Honour) a Game contract is feasible with around 18-20 HCP ! The Response hand has 8 or 8½ losers.


SPL 2 Bidding : 1♥ - 4♥
Opener
A 9 8 5
A Q 10 9 2
9
A 8 3
  Responder
10
J 8 7 6
6 5 4 2
K Q 6 4


Responder's singleton should not be a top Honour. This ensures that all Responder's HCP are in the other suits. A 10 (or perhaps even a Jack) is allowed.


SPL 3           Bidding : 1♠ - 4♥ - 4NT - 5♥ - 6♠
Opener
- K Q J 4 3
- 8 7 4 2
- A Q J
- 6
  Responder
- A 9 8 7 5
- 6
- K 9 5
- A 9 4 3

With 11+ HCP, 4+ trumps and a void or singleton Responder makes a double jump to his void or singlteon suit. This is called a Splinter raise.   4NT is Blackwood or RKC Blackwood.

With this kind of Responder hand (11+ HCP, 4+ trumps plus a singleton or void, no singleton Honour) a Slam contract is feasible with around 25-28 HCP ! (or even less when Opener has an unbalanced hand too) A Splinter Responder hand has 7 or less losers.


SPL 4 Bidding : 1♣ - 3♠ - 3NT
Opener
- K Q J
- Q 10 7
- 8 4
- A J 6 4 2
  Responder
- 4
- A 9 3
- K Q 7 3
- K Q 10 9 7

You can also bid a Splinter raise after a minor suit opening. In such cases the Splinter is usually at the 3-level and conveys the message : "Partner, if you have this suit covered, bid 3NT."


SPL 5                         Bidding : 1♥ - 3♠ - 4♣ - 4♦ - 6♥
Opener
- 9 5 4 2
- A Q J 10 5
- 3
-A K 6
  Responder
- 6
- K 9 7 6
- A K 10 8 5
- Q 10 2

The bid of a new suit after a Splinter raise is a cue bid showing an Ace.   Bid Aces up the line (but exclude the trump suit), skipping a suit, denies having the Ace in that suit.
Bidding the trump suit is a sign-off : "Partner I have nothing more to show you."


SPL 6                       Bidding : 1♥ - 1♠ - 4♦ - 5♦ - 6♠
Opener
- K Q 8 5
- A J 10 6 4
- 6
- A K J
  Responder
- A 10 9 7 4
- 9 2
- A 9 5 2
- Q 6

Opener too can make a Splinter raise with 4+ trumps in Responder's suit and a singlton or void, if Opener considers a Slam contract may be possible.
Holding an Ace in Partner's singlton suit is OK, but other Honours are wasted values.


SPL 7                         Bidding : 1♥ - 3♠ - 5♦ - 5NT - 6♥
Opener
- A 9 5 4
- K Q J 10 5
-
- J 10 6 4
  Responder
- 6
- A 9 7 4
- Q 10 8 3
- A Q 5 2

A jump shift of a new suit after a Splinter raise is Voidwood (see Lesson 5). It shows a void in the suit and asks for Partner's Aces (or Roman key cards) in the other three suits.


SPL 8                         Bidding : 1♥ - 3♠ - 5♣ - 5♥ - Pass
Opener
- A 9 5 4
- K Q J 10 5
- J 10 6 4
-
  Responder
- 6
- A 9 7 4
- K 9 5 2
- A Q 8 3

Voidwood asks for Partner's Aces (or Roman key cards) in the other three suits. Therefore an Ace in the Enquirer's void suit is not shown !
Only make a Voidwood enquiry when a negative reply does not commit you to a Slam contract.



© 2012 Michael Furstner