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Our 1 opening = 4+, not 4s, 11-15 pts. 1 is then an 11+ shape-ask

 

1 - 1

 

1NT : 4+, unbalanced

2 : balanced

2 : >=

2 : >

2+ : 6+

 

That works fine, won't change that. Now consider

 

1 - (no) - 1 - (2)

 

Relay is intact after the overcall and Square, so

 

pass : 4+, unbalanced

X : balanced

2 : >=

2 : >

2+ : 6+

 

Easy enough but a bit silly. Fancy bidding 2 with 5+ in the overcalled suit!

Apart from that, you will miss most penalties.

Better is to swap the minors in this particular auction.

We normally show suits and shortages top down, (>>>) which works fine in most auctions.

A swap here would produce

 

pass : 4+, unbalanced

X : balanced

2 : >=

2 : >

2+ : 6+

 

which is clearly superior.

Responder can relay with double over the club-showing pass, aware that opener might pass.

If not prepared for that, asker would jump or cue instead.

 

The same would apply after our 1 opening, which shows spades

 

1 - (no) - 1 - (2)

 

Only the 2 overcall requires the swap. No swapping needed after a strong club, or other openings.

So it would be very rare and a genuine memory strain.

 

Is it worth it?

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Now consider

 

1 - (no) - 1 - (2)

 

Relay is intact after the overcall and Square, so

 

pass : 4+, unbalanced

X : balanced

2 : >=

2 : >

2+ : 6+

 

Easy enough but a bit silly. Fancy bidding 2 with 5+ in the overcalled suit!

Apart from that, you will miss most penalties.

Better is to swap the minors in this particular auction.

You could also try

 

pass : 4+, unbalanced OR C > H

...X = relay

......P = C > H

X : balanced

2 : >=

2 : > not used!

2+ : 6+

 

.

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