"It's difficult to describe how the robots defend."
What does the North robot lead - after carefully considering the bidding and weighing up all options?
Good lead by GIB to avoid the obvious club. If you wanted a club lead you should have bid and rebid another suit. So clubs are out. I'm surprised GIB didn't lead ♠Q, a top of nothing lead.
"It's difficult to describe how the robots defend."
What does the North robot lead - after carefully considering the bidding and weighing up all options?