You can find digital keys for on various platforms:

: Direct purchase is available on the official Steam store page . Resident Evil 0 HD REMASTER

In , "piece" typically refers to the Chess Piece Puzzle located in the Training School/Director's Office . Solving this puzzle is necessary to obtain the Book of Evil , which contains the Black Wing item. Solving the Chess Puzzle

: Check the small chessboard on the desk to see the reference layout.

: Available for around $4.99 (original price $19.99).