Magnus – the Developer of – returns for the one-hundred sixty-sixth edition of the GeoGearHeads. He was last on to share some of the key features. Now he talks about some of the new features including "Auto-challenge-checkers" and "Challenge difficulty." Congratulations to for submitting the winning response for this week's question. Thanks to for their donation of this week's gift! The live video session from this Google+ Hangout On Air can be found on .

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