| − | '''Perpetual check''' is when one player forces a draw by incessantly putting the other side in check, without [[checkmate]] but also without any ability of the other side to move in such a way as to avoid being placed in check again. | + | '''Perpetual check''' is when one player forces a draw by incessantly putting the other side in check, without [[checkmate]] but also without any ability of the other side to move in such a way as to avoid being placed in check again. A draw by impossibility of checkmate is automatic (i.e. it does not have to be claimed by one of the players). |