or solve online (using our beta test of Penpa-Edit tools; use tab to alternate between Sudoku = big digits and Number candidate = small entries in the corners of cells.)
Theme: Somewhere Over/Under the Rainbow
Answer String: Enter the 2nd column from top to bottom, followed by a comma, followed by the 5th column from top to bottom. (Note: for the tight fit cells, enter the top digit before the bottom digit as would be normal for the read order of the digits.)
Time Standard: TFSudoku Master = 1:30, Expert = 4:30, Novice = 15:00
Note: Follow this link for other Tight Fit Sudoku puzzles on this website. If you are new to this puzzle type, here are our easiest Tight Fit Sudoku to get started on. More Tight Fit Sudoku can be found in our beginner-friendly collection Intro to GMPuzzles by Serkan Yürekli and in The Art of Sudoku 2.