Featured Puzzle: Gemini Sudoku #1

When I first saw this type of puzzle, it was labeled “Twin Corresponding Sudoku,” and the instructions were unfortunately vague. After looking more closely at the example solution, I eventually understood how it worked. Then I figured I’d give it a catchier name.

In Gemini Sudoku, you’re given a pair of Sudoku grids. The grid on the right works like a cipher for the grid on the left. Wherever a digit appears in the left grid, it maps to a specific digit in the same position in the right grid. For example, a 4 in the left grid might map to a 6 in the right grid. This means that for every 4 you discover on the left, you can place a 6 in the same position on the right.

Note that this does not necessarily work both ways. You can also see that a 4 in the right grid maps back to an 8 in the left grid. So be careful!

• Normal Sudoku rules apply. Place numbers 1-9 in each grid such that no digit repeats in any row, column, or 3×3 region.
• Each digit in the left grid has an associated digit in the right grid.
• Associated digits always appear in the same positions.
• This association is one way, like a cipher. When L4=R6, it does not mean that R4=L6.