Alexander Yuryevich "Sasha" Pichushkin (Russian: Алекса́ндр Ю́рьевич Пичу́шкин, born 9 April 1974), also known as The Chessboard Killer and The Bitsa Park Maniac, is a Russian serial killer. He is believed to have killed at least 48 people, and possibly as many as 60, in southwest Moscow's Bitsa Park, where a number of the victims' bodies were found.