LBengtsson, on 2021-September-09, 21:11, said:
You can always bid 5♠ later in the auction - if the next round of bidding makes you believe that sacrifice is best. 4♠ is what many players will do at white/red. the only time I might bid 5♠ is if partner bid 2♠ as a weak call instead of 1♠ though I still think 4♠ is the better bid even after 2♠ overcall. going to five level on first round of bidding is very not usual.
I would strongly disagree with anyone who bid 4S and then bid 5S over 5C. Such action violates one of the fundamental rules of preemptive bidding. If one anticipates taking a save, bid as high as one intends to bid as soon as possible. One of the most frustrating results one can have is to overcall 1S, hear partner bid 4S, the opps bid 5C, which is about to go down (but unable to double) and then see partner snatch defeat from the jaws of victory by bidding 5S.
IOW, if one were convinced that they can and will bid and make 5C and if one were optimistic that 5S would be a good save, bid 5S right away.
However, 5S would not occur to me on this hand.
I don’t understand why I’d be convinced that they would bid 5C over my preferred 3S call, nor that they’d make it nor that 5S would be a good save.
I do understand that all of those things ‘could’ be true, as I gather they were, but I don’t understand why one would think that they were all true…note that for 5S to be right, one is betting that three different things are true…if just one is wrong, 5S is terrible.
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari