B.1. Direct interference
A. Suit overcall 5+c 8-15 HCP (Possible 4c suit in 1st level).

A.1. Direct responses:
Bid
Meaning
New suit
5+c suit 8+ HCP - Forcing 1 Round
1 NT
10-11 HCP secures opener’s suit
2 NT
12-14 HCP secures opener’s suit
3 NT
15+ HCP secures opener’s suit
Direct Cue-bid
3+c fit 10+ HCP or 12+ HCP no opener’s suit stopper
Simple raise
3+c fit 6-9 HCP
Jump raise
4+c fit 0-5 HCP Preemptive

A.2. Responses after advancer’s bid:
Opener
Overcaller 
Advancer
Responder
1 ♣
1 ♦/♥
Dbl
RDBL = 10+ HCP, 2c♦/♥ & No other bid


Pass/1 ♠
1. 2 ♣ = Limit raise or better (3c fit) & balanced



2. 3 ♣ = Limit raise or better (4+c fit) & some shape (not balanced, I.e. 3c-3c-2c-5c)

1 ♠
1 NT
1. 3♥ = A new preemptive suit



2. Pass = Minimum & till 3c♠
1 ♥
1 ♠
2 ♣
1. Pass = Nothing to say
Do not forget this bid



2. 2 ♠ = Just a raise but with useful values



3. 3 ♠ = Preemptive
1 ♠
2 ♣
Pass
2 ♥ = 5+c♥, 8+ HCP & 2-3c♣ NF -
in a better contract try.
Overcaller bids 3 ♣ with 2c♥ or passes

B. 1 NT overcall balanced & 15-18 HCP. Responses as 1 NT opening (A.5).
C. Jump suit overcall weak 6+c. Responses:
Bid
Meaning
New suit
6+c suit & 0-1c in overcaller's suit NF
NT
Secures opener’s suit NF
Direct Cue-bid
Strong - Forcing 1 Round
Raise
3+c fit - Preemptive

B 2. No Trump opponents overcall
Bid
Meaning
DBL
Penalty
2 ♣
4+c♥ & 4+c♠ after 1 ♦ - 1 NT
Natural after 1 M – 1 NT
Any
Natural
* 1 ♣ - 1 NT - ? in 1 ♣ Chapter.

B 3. Two-suited holding overcall (YXA & MORS)
Opener
Overcall
Meaning
1 ♣ natural
2 ♣
4+c♥ & 4+c♠ 8-15 HCP

2 NT
5+c♦ & 5+c♥ 8-15 HCP

3 ♣
5+c♦ & 5+c♠ 8-15 HCP
1 ♣ Strong
Pass
Possible 12+ HCP

DBL
4+c♣ & 4+c♦ 0-11 HCP

1 ♦
4+c♥ & 4+c♠ 0-11 HCP

1 NT
Two suited holding 12+ HCP
* Same defense over 1 ♣ (Strong) - Pass – Negative reply

Opener
Overcall
Meaning
1 ♦ Natural
2 ♦
4+c♥ & 4+c♠ 8-15 HCP

2 NT
5+c♣ & 5+c♥ 8-15 HCP

3 ♣
5+c♣ & 5+c♠ 8-15 HCP
1 Major
2 Same Major
5+c♦ & 5+c other Major 8-15 HCP

2 NT
5+c♣ & 5+c♦ 8-15 HCP

3 ♣
5+c♣ & 5+c other Major 8-15 HCP


Opener
Overcall
Meaning
1 NT
DBL
5+c minor & 4+c Major or 6+c minor

2 ♣
4+c♥ & 4+c♠

2 ♥/♠
5+c♥/♠ & 4+c minor

2 NT
5+c♣ & 5+c♦
2 ♣ Strong
2 NT
Two-suited holding (6+c & 5+c)
Partner bids lower 3+c suit
2 ♣ Multi
2 NT
5+c♣ & 5+c♦ 16+ HCP
2 ♦/♥/♠ Multi
4 NT
5+c♣ & 5+c♦ 16+ HCP
2 NT
3 NT
Two-suited holding (6+c & 5+c)
Partner bids lower 3+c suit

B.4. Sandwich two-suited holding overcall
Opener
Partner
Responder
Overcall
Meaning
1 x
Pass
1 z
DBL
12+ HCP 4+c & 4+c other 2 suits



1 NT
8-11 HCP 5c & 4c other two suits



2 x (Lower Cue-bid)
8-11 HCP 5c & 5c other two suits



2 z (Higher Cue-bid)
12+ HCP 5c & 5c other two suits



2 NT
12+ HCP 6c & 5c other two suits OR any 5+c & 5+c over 2 x

B.5. Balancing over 1 ♣/♦ (Re-opening)
Bid
Meaning
DBL
Take out 8+ HCP or any 15+ HCP
1 ♦/♥/♠
5+c♦/♥/♠ 8-15 HCP
1 NT
Balanced 11-14 HCP. Replies as 1 NT opening (A.5)
2 ♣ (over 1 ♦)
6+c♣ 8-15 HCP
2 ♦ (over ♣/♦)
5+c♥/♣ & 5+c♠ 8-15 HCP
2 ♥/♠
6+c♥/♠ 12-15 HCP

B.6. Balancing over 1 ♥/♠ (Re-opening)
Bid
Meaning
DBL
Take out 8+ HCP or any 15+ HCP
1 ♠ (over 1 ♥)
5+c♠ 8-15 HCP
1 NT
Balanced 11-14 HCP. Replies as 1 NT opening (A.5)
2 ♣/♦
5+c♣/♦ 8-15 HCP
2 ♥ (over 1 ♠)
5+c♥ 8-15 HCP
2 ♠ (over 1 ♥)
6+c♠ 12-15 HCP
2 NT
5+c♣ & 5+c♦ 8-15 HCP Unusual NT

B.7. DBL - Take-out
A. Three-suited holding (4441 or 5440) 0-1c in opener’s suit 11+ HCP.
B. Any 16+ HCP.
Responses:
Bid
Meaning
New suit
4+c 0-8 HCP
Jump new suit
4+c 9-11 HCP
Cue-bid
Any 12+ HCP
1 NT
Secures opener’s suit 6-9 HCP
2 NT
Secures opener’s suit 10-12 HCP
3 NT
Secures opener’s suit 13+ HCP



C.1. Defense over opponent’s take-out DBL (1♦/♥/♠) continuation
·         2 in same suit = Fit 6-9 HCP ignoring DBL.
·         3 in same suit = Fit 0-5 HCP.
·         ‘RDBL’ = Any 10+ HCP.
After 1 ♣ opening in 1 ♣ Chapter.

C.2. Others competitive DBL continuation
·   DBL over transfer or splinter:
Suit position & opening lead suggestion.
·   Responder’s any over partner’s overcall:
o  DBL - Top honor (Α ή Κ) in partner’s overcall & suit tolerance.
o  DBL over after 1 x - DBL - 2 x: Responsive 4+c & 4+c other
suits 8+ HCP, partner’s suit tolerance & short opponents suit.
o  DBL over after 1 x - DBLF - 1/2 z:
Z = minor - same length suit in other suits - 10 HCP.
Z = Major - Major position.

C.3. Defense over opponent’s interference (1♦/♥/♠) continuation
·   Any one suit interference:
DBL = Any (6)8-11 HCP or Balanced 12-14 HCP or 5+c suit 12+ HCP.
1 NT = (6)8-11 HCP.
2 any suit = 5+c suit (7)8-11 HCP.
Cue-bid = 12-13 HCP.
·   Any two-suited holding interference.
DBL - Penalty at one at least suit 10+ HCP.
Raise opener’s suit ‘NF’.
4th suit bid 5+c and 12+ ‘NF’.
Cue-bid in lower suit = 3+c partner’s suit 10-11 HCP.
Cue-bid in higher suit = 4+c 4th suit 12+ HCP.
After 1 ♣ opening in 1 ♣ Chapter.

C.4. Defense over 1 NT all positions opening (Woolsey)
Bid
Meaning
DBL
5+c minor & 4c Major or 6+c minor
or strong 5+c Major or equal +1 HCP NT
2 ♣
4+c♥ & 4+c♠
2 ♦
6+c Major
2 ♥/♠
5c♥/♠ & 4+c minor
2 NT
5+c♣ & 5+c♦
3 ♥/♠
7+c♥/♠

1 NT – DBL continuation (5+cm & 4c M or 6+cm or 5+cM or equal NT)
Advancer
Meaning
Overcaller’s Rebid
2 ♣
Pass or correct 2 ♦ / 3 ♣ /Major

2 ♦
Major asking relay
- Pass = 6+c♦
- 2 ♥/♠ = 4c♥/♠
- 2 NT = Equal NT
- 3 ♣ = 6c♣
- 3 ♥/♠ = 5c♥/♠
2 ♥/♠
6+c♥/♠ NF

2 NT
Minor asking relay

3 ♣/♦
6+c♣/♦ NF


1 NT – 2 ♣ continuation (4+c♥ & 4+c♠)
Bid
Meaning
Pass
No interest
2 ♦
Same length ♥ & ♠
2 ♥/♠
To play
2 NT
Singleton asking relay
3 ♦
To play
3/4 ♥/♠
Preemptive
* 1 NT - 2 ♣ - DBL - 2 ♦: To play

1 NT – 2 ♦ continuation 6+c Major
Bid
Meaning
Pass
No interest
2/3/4 ♥
Pass or correct 2/3/4 ♠
2 NT
Min-max asking relay
3 ♣
To play

1 NT – 2 ♥/♠ continuation 5c♥/♠ & 4+c minor
Advancer
Meaning
Pass
No interest
2 NT
Minor asking relay
3 ♣
Pass or correct 3 ♦
3 ♥/♠
Preemptive
3 ΝT / 4 ♥/♠
To play

1 NT – 2 NT continuation 5+c♣ & 5+c♦
Advancer
Meaning
3 ♣/♦/♥/♠/NT
To play
4 ♣/♦
Game proposal

C.5. Defense over Weak 2 x or Precision 2 ♣/♦ or like Fantunes 2 x openings
Bid
Meaning
DBL
Take-out no 5c suit
2/3 x
5+c suit 12+ HCP
Cue-bid
Secure NT asking bid
2 NT
Balanced 16-18 HCP. Continuation as 1 NT opening (Α.5) & Advanced Stayman (A.1.6)
4 ♣ (over weak 2 ♣)
5+c♦ & 5+c Major 16+ HCP (4 ♦ ask Major)
4 ♦ (over weak 2 ♣)
5+c♥ & 5+c♠ 16+ HCP
4 ♣ (over 2 ♦)
5+c♣ & 5+c Major 16+ HCP (4 ♦ ask Major)
4 ♦ (over 2 ♦)
5+c♥ & 5+c♠ 16+HCP
4 ♣ (over 2 M)
5+c♣ & 5+c other Major 16+ HCP
4 ♦ (over 2 M)
5+c♦ & 5+c other Major 16+ HCP
4 other Major
5+c minor & 5+c other Major 16+ HCP
4 NT (over 2 M)
5+c♣ & 5+c♦ 16+ HCP

Weak 2 - DBL - Pass - 2 NT continuation Lebensohl
Bid
Meaning
2 x
Pass asking
3 x
4+c suit 8-11 HCP
Cue-bid
Secures opener’s suit 12+ HCP GF
2 NT
Transfer 3 ♣. Replies:
- Pass – No interest
- 3 any – 5+c suit NF
Lebensohl not obeyed:
·   3 NT - Balanced secures opening bid 20+ HCP.
·   Cue-bid - Balanced no stopper 20+ HCP.
·   Any - 9+ tricks.

C.6. Defense over Ekren 2 ♣/♦/♥/♠ openings Weak 4+c♥ & 4+c♠
Bid
Meaning
DBL
Balanced 12-15 HCP
2/3 ♥/♠
♥/♠ stopper NT asking bid
2 NT
Balanced 16-18 HCP secures both Majors
3 ♣/♦
6+c♣/♦ 13+ HCP
3 NT
Balanced 19+ HCP secures both Majors

C.7. Defense over Dutch 2 ♥/♠ openings Weak 5+c♥/♠ & 4+c minor
Bid
Meaning
DBL
Take out. Responses:
- 2 NT - Transfer ♣ Lebensohl
- Any - 4+c 8+ HCP
- Cue-bid - 4+c other Major secures opening
- 3 NT - To play
2/3 x
5+c suit
2 NT
Balanced 16-18 HCP secures Major
Cue-bid
Stopper NT asking bid
4 NT
5+c♣ & 5+c♦ 16+ HCP

C.8. Defense over weak minors 2 ♠/NT openings 5+c♣ & 5+c♦
Bid
Meaning
DBL
Balanced 15+ HCP secures both minors
3 ♣/♦
Stopper ♣/♦ NT asking bid
3 ♥/♠
5+c♥/♠ 11-15 HCP
3 NT
Balanced 19+ HCP secures both minors

C.9. Defense over preemptive 3 x openings
Bid
Meaning
DBL
Take out 15+ HCP
3 x
5+c suit 15+ HCP
3 NT
Balanced 16-18 HCP secures opening
Cue-bid
22+ HCP or 9+ tricks

Michaels Leaping:
Bid
Overcall
Meaning
3 ♦
4 ♣
16+ HCP 5+c♣ & 5+c Major (4 ♦ ask Major)

4 ♦
16+ HCP 5+c♥ & 5+c♠
3 ♣
4 ♣
16+ HCP 5+c♦ & 5+c Major (4 ♦ ask Major)

4 ♦
16+ HCP 5+c♥ & 5+c♠
3 ♥
4 ♣
16+ HCP 5+c♣ & 5+c♠

4 ♦
16+ HCP 5+c♦ & 5+c♠

4 NT
16+ HCP 5+c♣ & 5+c♦
3 ♠
4 ♣
16+ HCP 5+c♣ & 5+c♥

4 ♦
16+ HCP 5+c♦ & 5+c♥

4 NT
16+ HCP 5+c♣ & 5+c♦

C.10. Defense over transfer 3 x openings
Bid
Meaning
DBL
13+ HCP, 5+c in opening suit
3 x (any other suit)
15+ HCP, 5+c in suit
3 x (in transfer suit)
Strong Take out No stop
3 NT
18+ HCP Balanced secure stops
Cue-bid
22+ HCP or 9+ tricks
4 x (in transfer suit)
Strong Two-suited holding

C.11. Defense over Gambling 3 ♠/NT openings
Bid
Meaning
DBL
Penalty
4 ♥/♠
5+c♥/♠ & 4+c minor 16+ HCP
Partners 4 NT reply – minor asking bid

C.12. Defense over Namyats 4 ♣/♦ openings (8+c♥/♠)
In direct position:
Opener
Overcall
Meaning
4 ♣ = ♥
DBL
4c♠ & 4+c♣ & 4+c♦ 16+ HCP

4 ♦/♠
6+c♦/♠ 16+ HCP

4 ♥
5+c♠ & 5+c minor 16+ HCP

4 NT
5+c♣ & 5+c♦ 16+ HCP

5 ♣
6+c♣ 16+ HCP

Opener
Overcall
Meaning
4 ♦ = ♠
DBL
4c♥ & 4+c♣ & 4+c♦ 16+ HCP

4 ♥ / 5 ♣/♦
6+c♥/♣/♦ 16+ HCP

4 ♠
5+c♥ & 5+c minor 16+ HCP

4 NT
5+c♣ & 5+c♦ 16+ HCP

In 4th seat:
Responder
Overcall
Meaning
4 ♥/♠
DBL
Take out 16+ HCP

4 NT
5+c♣ & 5+c♦ 16+ HCP

4 ♠ / 5 ♣/♦/♥
6+c suit  16+ HCP
4 ♦/♥  (trn ♥/♠)
DBL
Take out 16+ HCP

4 ♥/♠
5+c♥/♠ & 5+c minor 16+ HCP

4 NT
5+c♣ & 5+c♦ 16+ HCP

4 ♥/♠ / 5 ♣/♦
6+c suit 16+ HCP

C.13. Defense over preemptive 4/5 x openings
Opener
Bid
Meaning
4 ♣
DBL
Take-out 16+ HCP

4 x
5+c 16+ HCP

4 ΧΑ / 5 ♣
Two-suited holding 16+ HCP/Slam try

Opener
Bid
Meaning
4 ♦
DBL
Take-out 16+ HCP

4 ♥/♠
5+c♥/♠ 16+ HCP

5 ♣
6+c♣ 16+ HCP

4 NT
Two-suited holding 16+ HCP

5 ♦
Two-suited holding Slam try

Opener
Bid
Meaning
4 ♥
DBL
Take-out 16+ HCP

4 ♠
5+c♠ 16+ HCP

5 ♣/♦
6+c♣/♦ 16+ HCP

4 NT
Take-out Two-suited holding 16+ HCP

Opener
Bid
Meaning
4 ♠
DBL
Penalty

4 NT
Two-suited holding 16+ HCP

5 x
6+c suit 16+ HCP

Opener
Bid
Meaning
4 NT (minors)
DBL
Penalty

5 ♦
5+c♥ & 5+c♠ 16+ HCP

5 ♥/♠
6+c♥/♠ 16+ HCP

Opener
Bid
Meaning
5 ♣
DBL
Penalty

5 x
6+c suit 16+ HCP

5 NT
Two-suited holding Slam try

Opener
Bid
Meaning
5 ♦
DBL
Penalty

5 ♥/♠
6+c♥/♠ 16+ HCP

5 NT
Two-suited holding Slam try