Draw by insufficient mating material

Dead position automatically declared a draw

David Cordover

Last Update 5 个月前

All dead positions in standard chess (by insufficient material) are automatically declared a draw by the server.


Dead Position 5.2.2 

The game is drawn when a position has arisen in which neither player can checkmate the opponent’s king with any series of legal moves. The game is said to end in a ‘dead position’.

However, insufficient material is not the only condition for a dead position. There are positions where the pieces on the board would be sufficient to mate if arranged otherwise. We cannot provide automatic draw declaration for these positions and players must call the arbiter for a ruling.

The following table shows the situations where the server will declare an automatic draw. All other situations must be decided by an Arbiter.

White / Black Material Lone King King and B (w-squares) King and B (b-squares) King and N
Lone King Forced Draw Forced Draw Forced Draw Forced Draw
King and B (w-squares) Forced Draw Forced Draw
King and B (b-squares) Forced Draw Forced Draw
King and N Forced Draw

Where either player has one, or many, bishops on the same color.

K v Q, B v Q and B v R are declared a draw when the player with the Q or R loses on time

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