A jigsaw Sudoku solver using GLPK. Paint the subgrid regions, fill in the known values, and then solve.
Subgrid:
Select a color, then click or drag cells to assign them to that subgrid. Each subgrid needs exactly 9 cells.
A jigsaw Sudoku solver using GLPK. Paint the subgrid regions, fill in the known values, and then solve.