Logic Masters Deutschland e.V.

Rules:

• Normal sudoku rules apply.
• Use the attached grid as an origami crease pattern. Dashed lines are valley folds (fold in front), and dotted+dashed lines are mountain folds (fold behind).
• There are two different ways of folding the crease pattern into a flat 3x3 grid of solid cells (folded edges may run along a cell border but not through a cell). Fill both 3x3 grids with the same magic square in the same orientation.
• On the other side of 3x3 grid are four triangles. The cells in each triangle sum to 12.

Play puzzle with CTC app

Note: If you are new to origami, I would recommend printing out the grid and folding all the valley fold lines so they go in the same direction and all the mountain fold lines so they go in the other direction.