Star Sudoku colorful number game for beginners stock vector illustration. Unusual triangular sudoku puzzle - place numbers 1-9 into the small triangles of each large triangle and each line just once Shutterstock .eps vector - Star Sudoku colorful number game for beginners stock vector illustration. Unusual triangular sudoku puzzle - place numbers 1-9 into the small triangles of each large triangle and each line just once - ID: 1976093693