Nine Deep Sudoku

3D cube & classic logic grids for iPhone

Nine Deep stacks sudoku grids into a cube. Every sheet follows the usual rules: each row, column and box holds each digit once. But every shaft, the line of squares running straight down through the stack, has to hold each digit once too. Turn the cube, flip between sheets and work out the whole stack.

New to cubes? Start with a 4×4 cube, step up to 6×6, then take on the full 9×9 cube. Classic sudoku is in there too.

Free to play, with a one-time $4.99 Full Game purchase that unlocks every puzzle.

App Store link coming soon