Mixed Pairs Event E-W were seasoned campaigners N-S were not a regular partnership.
North's 3S bid was not alerted and E-W called for TD and reserved rights.
N-S convention card was very sketchy and Splinter Bids were not listed although they claimed to have discussed that before play. South had clearly not interpreted 3S in this way initially.
The hand was played out with the contract succeeding.
E-W claimed that South had obtained UI from North's 'pull' and should be required to bid on to 5S whereupon South would be allowed to correct to 6D which West would double for 100 at least.
East claimed that their side had been damaged as she would have doubled 3S to show that they held that suit to length. But if E-W subsequently bid on in spades to 'save' over 4D or even 5D they will likely concede a large vulnerable penalty.
The rule book clearly states that the Director awards an adjusted score if it is considered the offending side has gained an advantage through the irregularity - not in this case - (although failure to alert was an infringement).
This seemed easy, and I have already given an opinion. But do you find it easy? And will your opinion agree with mine?

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.W. .N. .E. .S.
.... ..... .P. 1♦
Dbl .3♠ .P. 4♠
..P.. 5♦ .P. .P.
..P
Result:
5♦ = by S
Lead: ♣3