"These plugs designed with chess pieces were used together to open a door."
— Item examination
King/Knight/Bishop/Rook Plug is a special item in Resident Evil: The Umbrella Chronicles.
- Waples, Damien (2007). Chastain, Rebecca. ed. Resident Evil: The Umbrella Chronicles Prima Official Game Guide. Roseville: Prima.
- ?, ed (2007) (in Japanese). BIOHAZARD The Umbrella Chronicles Official Guidebook. Famitsu. ISBN 978-4-7577-3954-3.
- ↑ Waples, Prima Official Game Guide, p.112.
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