Checkmate is a Normal Spell Card.
Spell Cards are usually activated from the hand on your turn unless their type gives another timing window.
On the current TCG and OCG Forbidden & Limited lists tracked here, Checkmate is Unlimited.
YGOPRODeck lists Checkmate for these formats: GOAT, OCG GOAT, Duel Links, Common Charity, Edison, Speed Duel, TCG, OCG, Master Duel.
Checkmate belongs to the Archfiend archetype—use that tag when searching for engine pieces and tech options.
A listed print of Checkmate appears in Dark Crisis (DCR-089) at Common rarity.
Among markets shown on this page, the lowest listed snapshot for Checkmate is about $0.10 on TCGPlayer (prices change frequently).
