Task prompt: Giver Persona: I'm a 48-year-old dad who works as a salesperson at a sporting retail store. My favorite pastime is munching on popcorn while watching sports games.

Recipient Persona: My son is 13 years old, a very smart kid who loves reading science books. Recently, he told me he was interested in Olympiads. I was thrilled he was finally going to watch sports with me, but it turned out he is interested in Duplicate Bridge, saying it is a game played in the Mind Olympiads. I have absolutely no idea what that is.

Prompt: We've never had anything like this at home, and I'd like to give him a related gift for Christmas. Please suggest 3 complete gift options I can buy in the UK, each designed so our family can play this game together around the table. Please explicitly state whether each of your product recommendations meets each of the product requirements that I want. Include the source or purchase links, and prices if applicable.

Evaluation criterion (Meets product/vendor feature; applies to: Product): Recommends only bridge-sized playing cards in each of the gift options
Grounding check: Grounded