[antonylee]

You pick up KQx KQJxx AQxxx -, first seat all white, imps. You are playing WJ05 with Bubrotka. Do you open 1♣ (18+ or various weaker hands, you will be GF'ed when partner had any 7+) or 1♥ (11-17)?
If you open 1♣, partner bids 1♠ (7+, 4+♠). Do you bid 2♦ (18+, 3+♠, artificially asks partner's 1/ ♠ length and 2/ strength (7-10 or 11+)) or 2♥ (natural bidding after that but partner will initially assume you have at most 2♠ except if very unbalanced)?

[Codo]

I would open 1 ♣, but it is close. The hand is strong enough, but I can anticipate some ugly situations with two suiters over a 1 Club opening.

Over 1 ♠ I would rebid 2 ♥, if partner will rebid 2 ♠, I try a forcing spade raise- is 4 ♣ avaiable, over other bids, I show my diamonds or my spades, ddepends on partners bid.

[antonylee]

In that case the auction will likely go 1♣ 1♠ 2♥ 2N 3♦ 3N (2N, 3N: naturalish).
Did you have enough, or are you going to try something else?
If partner rebid 2♠ then even 3♠ would be forcing so you'd be in a decent position.

[Codo]

I would bid 4 ♦ and pass any passable bid thereafter...

[antonylee]

So you'd give up on finding 4♠ on a 4-3 fit (not that it's totally obvious there's any hand where 4♠ makes and neither 4♥ nor 5♦ does)?
Anyways I had the following auction: 1♣ 1♠ 2♦ (art GF 3+♠) 2♥ (4♠ exactly, 7-10) 3♥ 3N 4♠, partner had xxxx Tx xxx AKxx and made when ♠ broke 3-3 and a misdefense provided him with the entry to hook the ♦. Not very convincing...

[Codo]

Yes I would give up on spades, mybe wrongly so, but I would find the 5-2 heart or the 5-3 diamond fit.
I guess I had played 4 ♥, not a piece of cake, but if they lead the unbid suit, I just need the diamond finesse and diamonds 3-2. Oh well. We are minimum for 1 ♣, partner minimum for 1 ♠ and you can hardly find 7 points which are worse then what he holds....