Hecho matemático: 6828 is the number of ways to start with a knight in the corner of an 8×8 chessboard, make 8 moves, and end on the same square.
Trivia: 6828 is an uninteresting number.
Fecha histórica: September 10th is the day in 1419 that John the Fearless, Duke of Burgundy is assassinated by adherents of the Dauphin, the future Charles VII of France.