[pilowsky]

I quickly worked out that the North robot was unlikely to have many Hearts.
Normally in this sequence bidding 3NT over a minor opening in a best hand tournament lands one in a fairly safe game contract.
But not today.
What does the North robot have?
What would you bid?

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Spoiler

Nobody reached the optimum contract

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[Cyberyeti]

I'd expect him to have what he had although more often with the 10♣ being the A and the A♦ being smaller. I'm bidding something other than 5♣ no idea how GIB would interpret 5♥ but to a human I would expect it to show a heart control and no diamond control (so presumably a club control of some sort) and to know whether I want to play in spades or clubs assuming 5-6.

[spade7]

The robot bid accurately!

[EricK]

Since the robot would expect you to double with 4♠, he would only bid this way with 56 in the blacks. This hand is probably worth a 5♥ cue, as you have the fillers in his ♣ suit.

[mw64ahw]

If you don't play MAFIA then I read North as being 56 in the blacks South has denied 4♠ by failing to X 1♥.

5♣/♠ should be makeable with slam as an outside chance.

I pass 4♠ or bid 4NT (2 keycards) if taking a risk.

A 5♦ response shows the control I'm looking for denying AK♣, with the requisite keycards/Q♠ for the slam try. 6♠ follows