From the table 4, it is clear that the mean of the math scores of the chess player students was more
than the non-chess player students; suggesting that chess play, as an independent variable, has a positive
role on developing problem-solving ability of the students. Furthermore, the results suggest that the
mean difference of math scores of chess player students was significant at p < 0.05 in fifth grade
students, p < 0.05 in eighth grade and p < 0.01 in the ninth grade students when compared with nonchess
player students. Table 5 summarizes the result.