Welcome to the hdos databank mainframe. the file "secret government projects 1954 - 2008.xls" is protected. your were hired to unlock all security layers to gain access. your actions are monitored and saved. use your mouse to move and swap blocks to form rows or columns of 3 or more. you have a given number of moves. clear all blocks to complete a level. unlock all levels to gain the ultimate prize! good luck!
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