- This card is named after Checkmate, a position in the Chess game.
- Combat Unit, Guardian Rook, Attack Unit, Flying Bishop, Battle Unit, Knight Fighter, King the Dominator, Mobile Unit, Soldier Pawn and Control Unit, Suppression Queen all appear in this card's artwork.
- This is the first card whose ability allows the player win the game. It was followed by Ruler of Terror.
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.