God Save the King

From BoardGameGeek:

"God Save the King" thrusts players into the center of the conflict between warring kingdoms. The crown is threatened; the duty to take up arms falls to every living subject, whether knight, marshal, captain, footman, squire or cup-bearer. Even the Queen, herself may be called upon to give her life, in order that the King may be spared. "God Save the King" is an abstract strategy game that can be played using a standard deck of 52 playing cards. However, the talented Inna Kozak has illustrated a custom deck of cards featuring thematically-rich characters, where every card is a unique face card. Simple to learn, but with layers of complexity, players must use induction, deduction, and deception, in an attempt to seize the rival King(s) while protecting their own.