Vislor Turlough-Tegan Jovanka chess match

The Vislor Turlough-Tegan Jovanka chess match referred to a game of chess the pair once had.

History
During a power drain in the TARDIS, Tegan and Turlough decided to play a game of chess. Turlough controlled the white pieces whilst Tegan controlled the black.

At the time the White Guardian appeared inside the TARDIS, Turlough was winning, after just putting Tegan in check with one of his bishops. After the Fifth Doctor finished his audience with the Guardian, the TARDIS jerked causing its inhabitants and the chess board flying. Without a way to resume the game, it was effectively over.

Tegan later picked up the board and the pieces from the floor. (TV: Enlightenment)