“Tangram” is a puzzle game which is consisted of seven pieces of triangle and square. Problem-solvers of this puzzle are presented task of silhouette and required to make the same configuration using the 7 pieces. The puzzle game is often used to educate creative and geometrical intelligence of children in teaching of mathematics, drawing and crafts. The purpose of this study is to explore factors that predict the completion of insight problem solving of Tangram. Participants (N =139) were required to complete questionnaires for ability of diagrammatical problem solving and metacognition, and to arrange the pieces to the shape of the “lion.” A logistic regression analysis was conducted to examine the influence of predict factors to a completion of the task. The results indicated that “decrease in piece operation”, “long mediation time” and “expectation to solution” had an effect on insight problem solving of Tangram, but “ability of diagrammatical problem solving” and “metacognition” had no effect. The findings of this study generally supported previous study.
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