"The castaways would solve a slide puzzle to obtain a hatchet. They would then use the hatchet to cut a rope which would drop a bag of four cubes with colored sides. The castaways would have to stack the cubes such that there would be no repeating colors on each side. The first castaway to properly stack the cubes would win." ~ @SurvivorWiki
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Rick and Christine compete.
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Rick wins the duel and remains on redemption island.
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Christine leaves the game.
Proceed to the immunity challenge.