A weekly visit for Roberto, 81, who lives alone in São Paulo

I'm writing for my neighbor Roberto, who's 81. Roberto lives alone in São Paulo, and lost a son last year. The nearest family lives on the other side of the country. Roberto loves chess, and would enjoy someone to chat with. An hour a week, perhaps on Tuesday afternoon, would mean the world. We can also arrange a phone call if you can't visit in person. All visitors will be introduced by me and I'll be there at the first meeting. I'll share references and, if you'd like, a short orientation from the local befriending charity. No special skills are needed - just kindness and patience. Whatever you can give, even just sharing this page, means a lot.