Scoring: MP
At a UK county pairs qualifier, I was sitting west against an elderly couple. Partner opens 1NT (12-14), RHO passes and I pass. (you might think this was wrong but we didn't have the tools to show a weak minor 2-suiter and anyway that is another story) LHO then comes in with a leap to 4♠, which we all pass smoothly in spite of me thinking about a double.
We play ordinary count in following suit and discarding. (except Ace attitude) Mckenney when obvious.
Partner led ♠10 taken by king in hand. Declarer then played ♠A to which pd followed with ♠9. What do you discard to help partner? I won't go into the gory details of what actually happened after I made a rubbish discard of 2♦, but we got a 0 on the scoresheet.
I believe I should have played ♣9 to give partner the count so that he can hold up if declarer switches immediately to a club. If declarer plays of all her spades I can throw 3 clubs if necessary to show that I definitely started with 4 and then diamonds upwards. Then partner cannot go wrong and come down to ♥Q, ♦KJ, ♣AQ if declarer plays off all the spades.
I am interested to know how the players who play attitude or other or no signals would discard on my hand. Also suppose South had been dealer and opened 4♠ with the same lead? Would those that play count discards do anything different?

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