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Curvy is a HTML5 puzzle game using the canvas element. Just rotate the tiles so that like colors connect.
This test does not measure intelligence, your fluency with words, creativity or mathematical ability. It will, however, give you some gauge of your mental flexibility. few people have been found who could solve more than half of the questions on the first try. many, however, reported getting answers long after the testing had been set aside, particularly at unexpected moments when their minds were relaxed. some reported solving most of the questions over a period of several days.