Logical number puzzle - unusual triangular sudoku colorful vector illustration. Full each big triangle, each orange and blue lines by numbers - use from 1 to 9 just once. Educational children game Shutterstock .eps vector - Logical number puzzle - unusual triangular sudoku colorful vector illustration. Full each big triangle, each orange and blue lines by numbers - use from 1 to 9 just once. Educational children game - ID: 1979573084