Marrying the Dandy Prince, the Princess Plans to Usurp the Throne

She was a poison doctor in the 23rd century. Once she traveled through time, she became the unloved eldest daughter of the royal family. Her father regarded her as a stepping stone to pave the way for his younger sister, and an imperial edict gave her to a playboy in the capital who was shunned by everyone. Everyone was laughing at her, and everyone was waiting for her downfall. But she decided to go against the will and become the biggest chess player! She wants to seek the throne, control life and death, and carve out her own path in life. But, that dandy prince who married her into the family, why did you play the same game of chess with me and control the same world?