Open 1S - partner responds 2C - you rebid your major suit. If you bid 2S you and partner will end up in game but if you jump to 3S and then Ace ask (4NT) - partner responds 5H meaning 2 Aces you then King ask, 5NT partner responds 6C oops no kings, so bid 6S. All Pass
Acol Bidding
Open 1S - partner responds 2C - you rebid your major suit. If you bid 2S you and partner will end up in game but if you jump to 3S and then Ace ask (4NT) - partner responds 5H meaning 2 Aces you then King ask, 5NT partner responds 6C oops no kings, so bid 6S. All Pass
Win the diamond lead in by finessing the KD to be in wests hand, dummy and lead out the JH and play low in hand. Draw 3 rounds of trumps lead out the JC from your hand finessing west for the KC. East wins the KC and returns a diamond - you cover with the AD and the rest of the tricks are yours.
Comment
This hand can make 6NT and 6S - some players will take a punt and bid it (and don't we all hate these players?) but if you follow the rules slam shouldn't really be bid.
The above commentary is intended as a guideline only. As with any Bridge hand there are many ways to bid and play any hand.