One Diamond opener

Question 1

1D - 1H

Answer 1

7-10 and 5-card suit or 7+ if 4-card suit

With 11+ and 5-card suit bid 2H over 1D

Question 2

1D - 1NT

Answer 2

7-10,

denies 4-card major

Question 3

1D - 2C

Answer 3

11+ forcing to 2NT or suit agreement

Question 4

1D - 2H

Answer 4

11+, 5-card suit, forcing to 2NT or suit agreement

Question 5

1D - 2NT

Answer 5

transfer to 3C

weak - and will be passed

or converted to 3D

Question 6

1D - 3C

Answer 6

constructive

Question 7

1D - 1H - 1S

Answer 7

1S shows 4+card suit
(If 4-card suit any points, if 5-card not a maximum
With 6D 5S and maximum bid 2S.
5S because maximum and only 4 would bid 1S.
6D because D must be longer)

Question 8

1D - 1H - 2H

Answer 8

4-card support (not maximum)

Question 9

1D - 1H - 3H

Answer 9

4-card support and maximum

Question 10

1D - 1H - 3S

Answer 10

splinter - 4-card support, maximum, shortage

Question 11

1D - 1H - 2NT

Answer 11

3-card support, maximum, minors 5/4

After responder bids major, showing support is priority. With four card support, could splinter in the S shortage

Question 12

1D - 1H - 3NT

Answer 12

3-card support, maximum, minors 5/5

After responder bids major, showing support is priority

Question 13

1D - 1H - 1NT

Answer 13

balanced

Question 14

1D - 1H - 2C

Answer 14

5/4 in the minors

2D then asks for major stops

Question 15

1D - 1H - 2D

Answer 15

5+ card suit

Question 16

1D - 1H - 3D

Answer 16

6D and max

Priority would be to support H or bid a S suit. With minimum bid 1NT, 2C, 2D as appropriate

Question 17

1D - 1S - 2H

Answer 17

6D/5H and minimum

(Responder did not bid H, so 5H required, and D must be longer as 1D rather then 1H opening bid)
Minimum because 3H available to show maximum

Question 18

1D - 1S - 3H

Answer 18

6D/5H and maximum

Responder did not bid H, so 5H required, and D must be longer as 1D rather then 1H opening bid

Question 19

1D - 1H - 3C

Answer 19

6D/5C maximum

(2C would show second suit of 4+ - could be second suit is D as 4/5 or 5/4)

(With 5D/5C i guess just bid 2C showing at least 5/4)

Question 20

1D - 1H - 2S

Answer 20

6D/5S maximum

1D-1H-1S would show 4+ card S suit

Question 21

1D - 2C - 2H

Answer 21

H stop, minimum

(As minimum, a S stop is possible, 2S is check back. If both stopped and maximum, 2NT would be bid)

(When responder bids a minor showing major stops is a priority)

Question 22

1D - 2C - 2D

Answer 22

D suit

Question 23

1D - 2C - 2S

Answer 23

S stop but no H stop, minimum

When responder bids a minor showing major stops is a priority

Question 24

1D - 2C - 2NT

Answer 24

Both majors stopped, maximum

When responder bids a minor showing major stops is a priority

Question 25

1D - 2C - 3C

Answer 25

C suit, no major stops

When responder bids a minor showing major stops is a priority

Question 26

1D - 2C - 3D

Answer 26

D suit, maximum, no major stops

When responder bids a minor showing major stops is a priority

Question 27

1D - 2C - 3H

Answer 27

6D and 5H

Responder did not bid H, so 5H required, and D must be longer as 1D rather then 1H opening bid

Question 28

1D - 2D - 3D

Answer 28

D suit, no major stops

Question 29

1D - 2D - 2H

Answer 29

H stop, minimum

(As minimum, a S stop is possible, 2S is check back. If both stopped and maximum, 2NT would be bid)

(When responder bids a minor showing major stops is a priority)

Question 30

1D - 2D - 2S

Answer 30

S stop but no H stop, minimum

When responder bids a minor showing major stops is a priority

Question 31

1D - 2D - 2NT

Answer 31

Both majors stopped, maximum

When responder bids a minor showing major stops is a priority

Question 32

1D - 2D - 3C

Answer 32

C suit, no major stops

When responder bids a minor showing major stops is a priority

Question 33

1D - 2D - 3H

Answer 33

6D and 5H

Responder did not bid H, so 5H required, and D must be longer as 1D rather then 1H opening bid

Question 34

1D - key rebids

Answer 34

Aim to support major, over minor show stops for NT

Major - with 3-card support and a maximum, bid 2NT with 5/4 in minors, 3NT with 5/5 in minors

Question 35

1D - 1H - 2C - 2D

Answer 35

asking for stops

(Without support for the major, priority is establishing stops. So 2S and 2NT should show S stop, minimum and maximum respectively)

Question 36

1D - 1S

Answer 36

7-10 and 5-card suit or 7+ if 4-card suit

With 11+ and 5-card suit bid 2S over 1D

Question 37

1D - 2D

Answer 37

11+ forcing to 2NT or suit agreement

Question 38

1D - 2S

Answer 38

11+ forcing to 2NT or suit agreement

Question 39

1D - 3D

Answer 39

constructive

Question 40

1D - 1S - 2S

Answer 40

4-card support (not maximum)

Question 41

1D - 1S - 3S

Answer 41

4-card support and maximum

Question 42

1D - 1S - 2NT

Answer 42

3-card support, maximum, minors 5/4

After responder bids major, showing support is priority

Question 43

1D - 1S - 3NT

Answer 43

3-card support, maximum, minors 5/5

After responder bids major, showing support is priority

Question 44

1D - 1S - 1NT

Answer 44

balanced

Question 45

1D - 1S - 2C

Answer 45

5/4 in the minors

2D then asks for major stops

Question 46

1D - 2C - 3S

Answer 46

6D and 5S

Responder did not bid S, so 5S required, and D must be longer as 1D rather then 1S opening bid

Question 47

1D - 2D - 3S

Answer 47

6D and 5S

Responder did not bid S, so 5S required, and D must be longer as 1D rather then 1S opening bid

Question 48

1D - 1S - 2C - 2D

Answer 48

asking for stops

(Without support for the major, priority is establishing stops. So 2S and 2NT should show S stop, minimum and maximum respectively)

Question 49

1D - 1S - 2D

Answer 49

5+ card suit

Question 50

1D - 1S - 3D

Answer 50

6D and maximum

Question 51

1D - 2D - 2H - 2S

Answer 51

Asking for S stop

Checkback after 2H shows H stop (cannot be H as responder would bid H with 4)