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Think you’re so smart? Do you like to impress your friends by solving Sudoku puzzles at the speed of light? Well, big deal, says Hans Andersson. He’s built a robot that can do that.

Andersson lives in Sweden and constructed the robot in his spare time using a robotics kit that he originally bought for his two kids.

The result is quite impressive. Hans utilized a light sensor to read the puzzle using some brilliant image processing techniques. He then created an optimized algorithm for solving the Sudoku puzzle and, finally, he gave the robot a pencil to use to fill in the numbers.

The video below shows the robot at work, solving a Sudoko puzzle…

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