My partner would expect me to open 1♠ with 5-5, but I was concerned about my rebid if partner responded 2♥. So I decided to to treat my spades as a 4 card suit and open 1♦. Comments please?
When my partner doubled the 3♥ bid, I alerted, then remembering the new EBU ruling before East bid, said "sorry no this is not alertable now". South a young man smiled and said that it depended on partner's hand and I nodded. After the auction finished, I asked North what the 3 spade bid meant. She said that she would have expected it to be a spade suit and a heart fit but in the light of my bidding didn't know.
In the light of the double do you still make the odds play of Q♠ or not? I got the impression that South liked the poker aspects of bridge. I did not make the makeable contract.
At the time my partner thought it was a good slam and I did not. My approx calcs:
Chance of making = Not losing 2 spadesx((losing 1 spadex 0.5)+losing no spades)
= (1-3/16)(9x.5/16 + 4/16) = 43% My guess is that the plus of a gift is offset by the minus possibility of a ruff.

Help

Bidding:
S W N E
p 1♦ 3♥ dble
3♠4♠ p 6♠
dble p p p
Lead 2♠