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Intermediate jump overcalls are more constructive than weak jump overcalls. A jump overcall at the 2-level shows a 6-card suit and 11-15 points. A jump overcall at the 3-level shows a 7-card suit and 11-15 points.

Many players consider intermediate jump overcalls to be more effective against good opponents, whereas weak jump overcalls may be more useful against bad ones. As a middle-of-the-road approach, expert Marshall Miles has noted in his book "Competitive Bidding in the 21st Century" that he prefers intermediate jump overcalls only when vulnerable. Thus, weak jump overcalls can still be played in the safer waters of white-on-white or white-on red vulnerability.

Examples of intermediate jump overcalls:


QJ
HT98
DAKJ862
CQ7
  
West
Pass
North
Pass
East
1
You
?


Bid 2D with a 6-card suit and 13 HCP.


5
HKQT543
DAT9
CA63
  
West
1
North
Pass
East
1
You
?


Bid 2H. It does not matter if one or both opponents have bid.


853
H6
DAK
CAQJ8752
  
West
Pass
North
Pass
East
1H
You
?


Bid 3C with a 7-card suit.


AQ8765
H54
DKQ7
CK8
  
West
1
North
Pass
East
Pass
You
?


Jump overcalls in the balancing seat need partnership discussion. Most players agree that they show a 6-card suit and a good hand. Bidding 2S seems pretty sensible here. However, exact point ranges vary by agreement.


KJ852
H9
DQ763
CA54
  
West
1
North
Double
East
1
You
?


Intermediate jump overcalls are off if partner has bid. Opposite a takeout double, bid 2S to show 4+ spades and 10+ points.


Responses

The responses to an intermediate jump overcall are as follows.

Response Meaning
2NT In response to a 2-level jump overcall, 2NT is artificial and forcing with 10+ points and game interest. (See below).
New suit Natural, nonforcing. Usually denies 2+ card support.
Single raise Preemptive. Partner is expected to pass.
Double raise Natural, signoff. May be strong or preemptive.


The responses to the artificial 2NT query depend on a partnership's agreements. The Ogust set of conventional responses works well. If not playing Ogust, however, a three-level new suit can show a control (ace or king).


Examples

NorthSouth
K84SQ2
HAQT942K85
DA798432
CT8K97

West    
1D
All pass

North    
2(1)


East    
Double


South    
3 (2)

  1. Intermediate jump overcall.
  2. A non-forcing raise.


NorthSouth
KQJ732SAT6
H53KJ4
DAKJ3762
C5KJ72

West    
1C
Pass
All pass

North    
2(1)
3 (3)


East    
Pass
Pass


South    
2NT (2)
4S

  1. Intermediate jump overcall.
  2. Artificial inquiry.
  3. Playing Ogust responses, this shows a maximum hand with 2 of the top 3 spade honors.

See also

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