Precision - No Trump Opening

Balanced hands with 14 - 16 points are opened with 1 No Trump.
It may contain a 5 card minor; but not usually a 5 card major.
Stayman is used to inquire for a 4-card major.
This may be the start of a sequence forcing to game or responder may simply want to play in a suit at the two level.
Transfer bids are used to let the No Trump opener (the stronger hand) declare. This often gains a trick or a tempo.
4-way transfers with "super-acceptance" of majors and minors are used.
The details are in the No Trump Openings section.

When opponents intervene, lebensohl is used.

3C - 3S response is used to describe specialized hands as follows:

3 C 5-5 in the minors; inviting to game
3 D 5-5 in the minors; forcing to game
3 H 5-5 in the majors; inviting to game
3 S 5-5 in the majors; forcing to game

Consequently, a transfer to a spades and then bidding hearts will imply 5-5 shape with slam aspirations.

More on Transfers

1. After the sequence 1N - 2H - 2S,
     2N: Game invitation with 5 card spades
     3S: Game invitation with 6 card spades
     3N: To play; partner may correct to 4S with 3 cards
     4m: Splinter
     4S: 6 card spades; mild slam try; Opener may proceed with maximum
       (Contrast this with 1N - 4H - 4S: No slam aspirations)

2. After the sequence 1N - 4H - 4S, 4N is RKCB for spades (responder has 6 or more spades)

3. After the sequence 1N - 2H - 2S, 4N is Quantitative

  Pass Enough!! (all other bids accept the invitation)
  5C - 5H Answer aces (!?) - revise later
  5N Asks responder to bid a 4 card minor; opener will pass, or bid 6S with 3 spades, or bid 6N
  6C - 6D Opener's 5 card suit; responder will pass or bid 6S; opener will now pass or bid 6N
  6S 3 card spades, not 4-3-3-3
  6N Just do it!!


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