When playing 2/1 you need to do something as responder with 11 or 12 point hands that aren't good enough to game force. I recommend playing Semi-Forcing Notrump. This agreement means that 1NT by responder after an opening bid of 1
or 1
shows 6-12 points, and can be passed. This agreement is easy since the opener rebids naturally. Yes, you might occasionally miss a game, but it's much easier than playing the other popular treatment: Forcing Notrump.
In conjunction with Semi-Forcing Notrump, I like to play that jump-responses to 3 of a lower-ranking suit are natural and invitational. If you have an unbalanced raise of partner, you can jump to 3-of-the-major. With a balanced limit-raise, respond 1NT and jump to 3-of-the-major.
It's simple once you get the hang of it. Try it out in this quiz. Or read this article to learn why we play this way and review it.
You might also consider getting Larry's book on 2/1 Game Force HERE or try Michael's 2/1 Webinar series which you can find HERE.
You are South. What is your call?
J3 AJ9 
K8765 
Q32
| West | North | East | South |
|---|---|---|---|
| 1 |
Pass | ? |
Pass
1NT
2
2NT
3NT
Other
You are South. What is your call?
K83 A942 Q752 32
| West | North | East | South |
|---|---|---|---|
| 1 |
Pass | ? |
Pass
1NT
2
2
2
3
You are South. What is your call?
K83 KJ9 Q1095 Q108
| West | North | East | South |
|---|---|---|---|
| 1 |
Pass | ? |
1NT
2
2
2NT
3
You are South. What is your call?
3 A109 KQ10985 Q32
| West | North | East | South |
|---|---|---|---|
| 1 |
Pass | ? |
1NT
2
2NT
3
3NT
You are South. This time, you opened the bidding. What is your call?
32 AJ972 KQ65 Q3
| West | North | East | South |
|---|---|---|---|
| 1 |
|||
| Pass | 1NT | Pass | ? |
Pass
2
2
2NT
Other
You are South. What is your call?
AJ103 K10942 K5 Q2
| West | North | East | South |
|---|---|---|---|
| 1 |
|||
| Pass | 1NT | Pass | ? |
Pass
2
2
2
Other
You are South. What is your call?
KJ3 9 KQJ65 5432
| West | North | East | South |
|---|---|---|---|
| 1 |
Pass | ? |
1NT
2
2NT
3
4
Other
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