Final answer:
Alexander Pichushkin, also known as the Chessboard Killer, claimed to have committed 61 murders in Russia with the goal of reaching 64, representing each square on a chessboard.
Step-by-step explanation:
Alexander Pichushkin, also known as the Chessboard Killer, claimed to have committed 61 murders in Russia. His goal was to reach a total of 64 murders, representing each square on a chessboard. Pichushkin's crimes took place between 1992 and 2006, predominantly in Moscow's Bittsevsky Park. He was known for luring his victims, mostly elderly men, into the park by promising to share alcohol with them. Pichushkin was eventually caught and convicted for his crimes.