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In the semi-finals 12 competitors were whittled down to six to compete in the grand final.
According to the announcement, the results from the final challenge will be announced in mid-November.
In this challenge, MAGICIAN's robot will map, seek and "destroy" objects of interest. Currently, the six finalists have been granted $50,000 to fine-tune their robot.
"They now have a few more months to fine-tune their concepts for the grand final challenge, where they will be required to field at least three robots and accomplish a complex task involving mapping and identification of threats while demonstrating a high level of autonomy between the robots," Australia's acting chief defence scientist Dr Warren Harch said in a statement last week.
"We want to move from the current paradigm of one man, one robot to one man and many robots."