In casual games, it is common to announce "check" when putting the opponent's king in check, but this is not required by the rules of chess and is usually not done in tournaments.Awon itokasi.. 
Arákùnrin yìí jẹ́ agbẹjọ́rò fún àwọn odi, ajàfẹ́tọ̀ọ́ àwọn odi àti òǹkọ̀wé ìwé lítíréṣọ̀.. 