👉 Knacking is a type of chess opening that was popularized by John Drusenbergh in the 1970s. It involves using two knights to attack the center of the board, where it is often referred to as "The Queen's Gambit." In this opening, the king moves from its usual position on the board to a knight and then a bishop in the center. The queen moves to the opposing side of the board, facing the king. The theory behind