I have a red face!
I suppose we all need refresher courses on the basics of this game, yes...       hmmmmm
I led the 9. I liked my sequence. KCR accepted the lead with glee, and promptly discarded her club loser on the established heart, claiming 4.
"Sorry, pard," I said, "should lead a club."
"No problem, pd. 'tis IMP's" abby replied.
Yes, this was not serious. We were -3.80 instead of -3.10.
Then this hand came shortly thereafter....
Totally disregarding partner's overcall, I led the 7. I didn't think we had many heart tricks coming, and I thought an aggressive lead was warranted. Wrong!!
Declarer wins the ace, and runs the diamond knave at trick 2, discarding her stiff heart. I win. What now??
I am desperate.
So... I switch to..... the K!!
Declarer wins, draws 3 trumps, and to her astonishment, the club knave drops. 5-up.
450 gives them 8.80 IMPs!!!
If I had led a heart, and abby forces with a second heart, the hand becomes totally unmanagable. A difference of at least 2 tricks!!   Yuk.
Yep, it takes a costly board like that to instil first principles -
LEAD PARTNER's SUIT.