Waverley (1982)

Players vie to connect either pair of opposite sides of the board using their pawns. After an initial placement phase, pieces are then maneuvered between orthogonally adjacent points. When a diamond is formed by a player, a block counter is placed in the center reserving that point for that player. Pieces can jump an opponent's piece, & that taken piece is returned to the board either along one of the 2 adjacent sides marked in its color or onto one of its owner's blocks. Connections are made orthogonally & diagonally, & the first player to form a chain across the board from side to side wins. Originally marketed by the Design Centre, London (iirc).