Earlier today, we presented three Sudokus with a twist: cells containing their position in the row, column, or 3x3 box are coloured gold. This extra constraint eliminates the need for number clues, creating an elegant and entertaining challenge.
The puzzles obey standard Sudoku rules—digits 1 to 9 in each row, column, and box—but with the added rule that gold cells must indicate their position, while white cells must not. A detailed explanation and tutorial are available in the original post.
For those who wish to try the puzzles again, solutions are now provided. A PDF printout of all three puzzles can be accessed via the link in the original article.
Note that the first puzzle is a 6x6 grid, using numbers 1 to 6 and 2x3 boxes. The puzzles have been a regular feature on alternate Mondays since 2015, with the author always seeking great puzzles to share.
