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BR 32.2 - The Crowhurst 2♣ Convention
The Crowhurst 2♣ convention is another useful
convention which provides the Opener with a chance to describe his hand in greater
detail. (This convention is very similar to "New Minor Forcing" and "Back check
Stayman")
After any two suit bids at the 1 level followed by a rebid by the Opener of 1NT
(showing 12-15 points) a rebid by the Responder of 2♣ is artificial and forcing for one round.
It shows 11+ points and an interest in Game.
1♣ - 1♦ - 1NT - ?
1♣ - 1♥ - 1NT - ?
1♦ - 1♠ - 1NT - ?
1♥ - 1♠ - 1NT - ?
In all above (and similar) cases a rebid of 2♣ by
the Responder is Crowhurst. Any other new suit bid at the 2 level by Responder shows a
weak 2-suiter hand, after which Opener may pass or show a preference (by returning to
Responder's first bid suit).
Here follow some typical examples.
Bidding
| Description
| Example hand
|
1♣ - 1♠ - 1NT - 2♣
| 11+ pts, Crowhurst
|
♠ A Q 9 7 4
♥ K 9 7 4
♣ K 8 5
♦ 9
|
1♦ - 1♠ - 1NT - 2♣
| 11+ pts, Crowhurst
|
♠ K 10 9 4 2
♥ K 8 5
♣ A 4
♦ J 7 2
|
1♦ - 1♥ - 1NT - 2♣
| 11+ pts, Crowhurst
|
♠ 9 4 2
♥ Q J 10 6 3
♣ A K 5
♦ 10 8
|
1♣ - 1♠ - 1NT - 2♦
| Weak, 2-suiter
|
♠ K 10 9 4 2
♥ -
♣ 8 4 2
♦ Q J 7 6
|
1♦ - 1♠ - 1NT - 2♥
| Weak, 2-suiter
|
♠ A 10 9 4 2
♥ Q J 7 6 3
♣ 7 5
♦ 7
|
1♦ - 1♠ - 1NT - 3♣
| Weak, 2-suiter
|
♠ K 10 9 7 4
♥ 6 5 3
♣ K Q 9 5 3
♦ -
|
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BR 33.3 - Opener's replies to a Crowhurst 2♣
After Responder's Crowhurst 2♣ rebid, Opener has
the following order of priorities :
- show the unbid 4-card major suit if he holds it.
This is only relevant when Responder's first bid was
1♠, so that Opener was unable to bid his 4-card
♥ suit.
- show 3-card support for Responder's major suit.
- show his points range : 12-13 = minimum 14-15 = maximum.
- Show his side suit stoppers for a possible NT contract.
- When Opener is unable to bid any of the above, he will rebid his own suit.
Opener will reply at the 2 level (2♦, 2♥, 2♠ or 2NT) with a minimum 12-13
points.
Opener will reply at the 3 level (3♣, 3♦, 3♥, 3♠ or 3NT) with a maximum 14-15
points.
After Enemy interference a Pass by Openers shows a minimum (12-13). All his other bids show 14-15 points.
Here follow some typical examples.
Bidding
| Description
| Opener's hand
|
1♣ - 1♠ - 1NT - 2♣ - 2♥
| 12-13 pts, 4-card ♥ suit
|
♠ A 7 4
♥ K Q 7 4
♣ K J 2
♦ 9 5 2
|
1♦ - 1♠ - 1NT - 2♣ - 3♥
| 14-15 pts, 4-card ♥ suit
|
♠ K 10 9
♥ K J 5 2
♣ A 4
♦ K 9 8 6
|
1♣ - 1♠ - 1NT - 2♣ - 2♠
| 12-13 pts, 3-card ♠ support
|
♠ A 7 4
♥ K Q 7
♣ K J 6 2
♦ 9 5 2
|
1♦ - 1♠ - 1NT - 2♣ - 3♠
| 14-15 pts, 3-card ♠ support
|
♠ K 10 9
♥ K J 5
♣ A 4
♦ K 9 8 6 3
|
1♣ - 1♠ - 1NT - 2♣ - 2NT
| 12-13 pts stoppers in ♦ and ♥
|
♠ 9 7
♥ K Q 7
♣ K J 0 6 2
♦ A 5 2
|
1♦ - 1♠ - 1NT - 2♣ - 3NT
| 14-15 pts stoppers in ♣ and
♥
|
♠ K 10
♥ K J 5
♣ A 9 7 4
♦ K 9 8 6
|
1♣ - 1♠ - 1NT - 2♣ - 2♥
| 12-13 pts stopper in ♥ not in ♦
|
♠ A 7
♥ K Q 7
♣ K J 0 6 2
♦ 8 5 2
|
1♦ - 1♠ - 1NT - 2♣ - 3♣
| 14-15 pts stoppers in ♣ not
in ♥
|
♠ K 10
♥ 9 7 5
♣ A K 7 4
♦ K J 8 6
|
Also check out the modified Crowhurst 2♣ used in combination with the Power 1NT opening.
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BR 32.4 - Deal 153 - 160
Deals 153 - 160 are examples of bidding as outlined in this
lesson.
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Copyright © 2011 Michael Furstner (Jazclass). All rights
reserved.