Cyberyeti, on 2024-October-16, 04:33, said:
It helps here to play a method other than Ogust here, we used to play that with a maximum we would bid a long suit feature, so if partner shows diamonds, you know you're in business.
I have a modified Ogust (for this and other reasons) in the brew, will post it here when I have thought it through.
With OP's agreements I would have bid 2NT Feature rather than a 4 level splinter, even if available: they aren't going to reply clubs and you know what to do after diamonds or hearts respectively.
With my modified Ogust and partner with a max of
♠AQ
♦K it might go:
2
♠-2N
3
♣(max)-3
♦
4
♦(feature)-4N(RCKB)
5
♣(1)-5
♦(Q?)
6
♦(Q+
♦K)-6
♠
P