Normal club competition. Medium level.
2♦= strongest bid
2♥= relay
2 NT= 23-25 HP
3♥= alerted and explained as spades
4 NT= after the bidding explained as Blackwood
5 NT= No idea
West was not sure if they play Jacoby in this situation and intended to show the hearts.
3 ♠was not alerted and after some thinking West bid 4NT.
EW play 4♣ and 4NT as Blackwood
Before his last pass, North asks the meaning of 4NT (Blackwood) and 5NT ("no idea").
After the play East asked his partner "why do you pass" we have to be in 6♥
Result 5NT+1
NS claim that a pass on 3♠ is a LA.
Your ruling?