This page contains Harry Potter And The Sorcerer's Stone Hints for GameBoy Advance called "Chess challenge" and has been posted or updated on Apr 26, 2007 by Zinko. Let us know what you think of this Hint by thumbs voting.
To get past this challenge (McGonagall's), you must wait until a chess piece is on a pressure plate, then immediately hit it with a Flipendo to freeze it. Ron will take care of the remaining one. Do not, however, touch the pieces, even when they are frozen, or you will lose one lightning bolt per touch.
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