This page contains Biohazard 0 Hints for Nintendo Wii called "Chess puzzle" and has been posted or updated on Jul 22, 2008 by Lowcoloco. Let us know what you think of this Hint by thumbs voting.
Look at the smaller chess board on the desk in front of the big one. Arrange the big pieces the same way. The difference is the only white piece by itself. Use Billy to push it down, to the right, and finally right in front of the black piece. The desk will now open.
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