Demonstration board

A demonstration board is a display separate from the board on which the game is played. It is usually large and vertical, with magnetic, slotted, or hanging pieces that someone moves by hand to reproduce the current position. It is used in lessons, public analysis, and tournament halls.

Its purpose is to communicate the game to spectators, not to record an official move. It must be updated carefully because it can lag behind or contain an error. The rules allow demonstration boards in the playing hall, but a player may not base a claim solely on the information shown there.

The regulatory definition distinguishes this manual board from an electronic screen or monitor. It also differs from an electronic chessboard used for play, which detects pieces or transmits moves from the physical board used by the players.