A bizarre incident at a chess tournament in Dagestan, Russia, has led to a criminal investigation after player Amina Abakarova was accused of poisoning her rival, Umayganat Osmanova, with liquid mercury. Surveillance footage allegedly shows Abakarova smearing a substance on the chess board before Osmanova fell ill, experiencing nausea and dizziness. The substance was confirmed to be mercury, which poses serious health risks, and Osmanova's condition prompted the tournament's suspension. Following the incident, Abakarova was suspended by the Russian Chess Federation and could face criminal charges, including a possible lifetime disqualification from chess competitions. The rivalry between the two players had escalated due to previous disputes over game rules. The motivation behind Abakarova's actions remains unclear, raising concerns about the safety of participants in competitive chess.