Quantumcat, on 2012-June-04, 00:30, said:
If the opponents have a nine-card heart, diamond or club fit, you won't be able to keep them out of the 3-level when you open 1♠. This is one of the main reasons for opening at the 2-level. However I do agree with your opinion on opening 4♠.
With that nice
♠ suit it is unlikely that the opponents are going to outbid you. Those that tried and ended in 4
♦ went down 2.
Weak Two Bids in 4th Seat have been discussed before. There is another reason why I won’t open the hand with 2
♠ in fourth seat. It violates the rest of my system agreements. In the other thread I posted that my agreements in fourth seat have been “flipped.” For your benefit I have copied that post in here.
32519, on 2012-March-20, 00:14, said:
You have made a lengthy post here arguing why something will work or won’t work. Let me fill you in on the finer detail of how and why we play fourth seat 2♥ or 2♠ promising a 6-card suit and 14-15 HCP.
Here’s the deal:
In 1st and 2nd seat we open standard weak 2’s with 5-11 HCP. When responder has 15+ HCP and game interest, we play “Feature Showing” 2NT.
In 4th seat this basic agreement has been “flipped.” Now it is opener showing the 6-card suit and 14-15 HCP. Armed with this information, responder has plenty of options. Your partnership can agree on which of the following you wish to incorporate:
1. Pass is obvious. No interest in further exploration.
2. 2NT = interest in playing 3NT from responders side, 10-11 HCP. Responder has some guarded Kings and wishes to protect them. Responder is also showing a 2-card fit with openers major and is hoping to make 6 tricks in openers major plus another 3 anywhere else.
3. 3 any = shortness and game interest in openers major. Opener can decide if the shortness fits in with the rest of his hand. Due to lack of trumps in responders hand, this option is not recommended.
4. 3 any = length and game interest in openers major. A possible source of tricks and is a better option than 3.
5. Picture Showing = showing an Ace or King in the suit bid and interest in game in openers suit.
6. 3M = balanced/semi balanced with 10-11 HCP, no Kings needing protection. The bid invites 3NT from opener's side or 4M.