From a Washington Post story by Sydney Page headlined “School custodian leads student chess teams to victory”:

As a chess coach, David Bishop is often asked the same question by his students: “Mr. Bishop, what’s your favorite chess piece?”

“I get that a lot,” said Bishop, who answers that — yes — the diagonal-moving bishop is a favorite piece, after the Queen.

Bishop has a relationship with the students that is twofold: He is not only the school chess coach, he is also the school custodian. He cleans the classrooms, and also cleans up at chess tournaments. His teams have won statewide competitions, and this year, they made it to the national championships.