Knight Line is a minimalist connection game for two players. Each player has 20 square tiles in their colour; at the start of the game, these tiles are placed in two adjacent stacks, one of each colour. A move consists of moving part of a stack (at least one tile must be left behind) to an empty space by making a knight's move. All pieces must be connected at least diagonally throughout the game. The first player to make a line of 4, orthogonally or diagonally, wins. To offset the first player advantage, they must move only a single piece on their first move.