[Cyberyeti]

You hold xx, A10xxxx, xx, AQx red v green

Partner opens 1♦, RHO overcalls 1♠, you bid 2♥(nat F), RHO bids 4♠, partner bids 4N

What does 4N mean ? If it matters, pass rather than 4N would be forcing here by agreement.

RHO bids 5♠, your call.

[gszes]

dont overthink this too much just treat it as rkc for hearts and assume u are playing dopi (by far most common even if i personally prefer podi)
bid 5n which should show 2 w/o heart Q and let p take it from there

[Bbradley62]

The BBO Advanced 2/1 card includes DEPO (Double Even, Pass Odd) for when the interference is above 5 of your suit. Is that not standard?

[Cyberyeti]

Bbradley62, on 2011-February-18, 21:05, said:

The BBO Advanced 2/1 card includes DEPO (Double Even, Pass Odd) for when the interference is above 5 of your suit. Is that not standard?

No, DEPO, DOPE, DOP1(x=0, P=1, next suit=2 etc) and D1P0 are all played, and also people vary whether if you have 2 aces, but the intervention is 5♦, whether you in DOPE make your normal blackwood response of 5♥/♠ or pass to show an even number.

I treated this as Blackwood, partner intended it as 2 places to play which were diamonds and clubs, bidding a slam in hearts was not a success.

[rhm]

Cyberyeti, on 2011-February-19, 05:28, said:

No, DEPO, DOPE, DOP1(x=0, P=1, next suit=2 etc) and D1P0 are all played, and also people vary whether if you have 2 aces, but the intervention is 5♦, whether you in DOPE make your normal blackwood response of 5♥/♠ or pass to show an even number.

I treated this as Blackwood, partner intended it as 2 places to play which were diamonds and clubs, bidding a slam in hearts was not a success.

The typical result of too many too sophisticated agreements for a non professional partnership.

Rainer Herrmann

[dake50]

Agree Rainer.
What would 5C show if not either minor to play?
Then 4N as keys? "I know where to put this hand".
Confusion intended unless this is a well-practiced partnership.

[Cyberyeti]

dake50, on 2011-February-19, 06:59, said:

Agree Rainer.
What would 5C show if not either minor to play?
Then 4N as keys? "I know where to put this hand".
Confusion intended unless this is a well-practiced partnership.

It's a well practiced partnership, 4N is clearly blackwood IMO, and I think partner agrees now.

5♣ would be 5+-5+, partner bid 4N because he was trying to show his 0274.

Forcing pass is not silly, I think I'd bid 5♦, but this could easily be wrong.

We got lucky on this board, partner has void, Q9, AQxxxxx, K10xx, diamonds are KJx offside, so we only lost 5 IMPs to the sensible 5♦ at the other table.

[Mbodell]

dake50, on 2011-February-19, 06:59, said:

Agree Rainer.
What would 5C show if not either minor to play?

Just because 5♣ can show both minors that doesn't mean 4nt isn't also both minors. Something like 6♦-4♣ or 7♦-4♣ or 7♦-5♣ might well try 4nt for the minors, with more length in the originally opened suit.

So 4nt isn't automatically blackwood.