I have three chess puzzles for you this week, but you don’t need to know the rules of chess for two of them. These two are variants of the famous eight queens puzzle, which asks solvers to position ...

When Covid-19 sent people home in early 2020, the computer scientist Tom Zahavy rediscovered chess. He had played as a kid and had recently read Garry Kasparov’s Deep Thinking, a memoir of the ...