Passion of The Game of Bridge

Useful Mini Sequence after 1NT rebid of 1C/1D opening With No 4cd Support

It is quite often that you have 5 or more cards major (/)when partner open on 1 minor (1 or 1). Obviously you will respond 1H or 1S  (unless you are very weak that allow you to pass) – this ,of course, only promising 4 cards. When partner did not support, hence denying 4 cards support and bid 1NT instead (i.e: at least doubleton support, unless 4-4-4-1), your next move probably to check whether partner has 3 card supports. With 3 card support partner cannot raise to 2M (unless very very good 3 cards like AKJ) – so your bidding system need to be able to cater this possibility.

Based on what so-called “Check back Stayman” convention, this is the simplified requirement:

  1. You open 1 minor (1 or 1)
  2. Partner respond 1/1
  3. You rebid 1NT
  4. Opponent did not disturb – no competitive bidding
  5. Then 2 bidding from partner is “Check Back Stayman” and the answer cannot be higher than partner suit:
    • 2 : no 3 card support of partner’s major – cannot bid 2 or 2
    • 2: 3 card support (only if partner bid 1) – if partner bid 1, then this bid means 4 cards .
    • 2: 3 card support (only if partner bid 1)

Therefore:

1 – 1 // 1NT – 2:

  • 2: there is no 3 cards support
  • 2: 3 cards support
  • 2: not used – answer cannot be higher than partner suit

—–

1 – 1 // 1NT – 2:

  • 2: there is no 3 cards support
  • 2: 4 cards
  • 2: 3 cards support

—–

1 – 1 // 1NT – 2:

  • 2: no 3 cards
  • 2: 3 cards support
  • 2: not used – answer cannot be higher than partner suit

—–

1 – 1 // 1NT – 2:

  • 2: no 3 cards
  • 2: 4 cards
  • 2: 3 cards support

—–

The bidder of Checkback Stayman can be weak or strong – it depends on the subsequent bidding:  rebid of Major or 3 are non forcing, 3 Major or 2NT are invitational.

This convention is very useful and effective to find 5-3 fit without guessing anymore. The only drawback is that you cannot “stop” at 2C. If you play short C system where 1C can be 2 cards C only, then it probably will not matter much. But even with 1C minimum 3 cards – convenient minor, probably passing 1NT with 5-3 fit in C produce more trick than 2C.

Give this convention a try !

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