Solid Number Place 9×9×9

A 9×9×9 number place puzzle where the grids cross in 3D. Fill in 8 numbers in any row, column, or 3×3 square, and the last one fills itself in.

Screen & Buttons Guide

• Left side: Select a layer using the axis and layer buttons. The 3D cube highlights the selected layer so you can see where you are.
• Right side: Solve the 2D Number Place grid of the selected layer. You can also enter numbers on the 3D cube.

• The puzzle progress bar, points, and timer are displayed at the top of the screen. You earn points by entering numbers and by triggering chains. Using hints deducts points.

• Reset: Starts a fresh, new puzzle.
• Restart: Starts the same puzzle over from the beginning.
• Settings: Adjusts the difficulty.
• Reset View: Turns the 3D cube so the currently selected layer faces the front.

• X / Y / Z: Switches the axis of the layer you want to select.
• X1-9, Y1-9, Z1-9: Selects a layer.
• 3D Cube: Displays the 9×9×9 Number Place puzzle. Drag to rotate it, and select a cell to enter a number.

• Undo: Reverts your last action.
• Erase: Erases the number you entered.
• Memo: Lets you write pencil-mark notes in a cell.
• Hint: Spends points to fill the selected cell with the correct number.
• 1-9: Enters a number into the selected cell. You can also use your keyboard.

• 2D Number Place: Displays the Number Place grid of the currently selected layer.

Other Features

• Long-press a filled cell to highlight every cell with the same number in that layer.
• When 8 numbers are filled in a row, column, or 3×3 square, the last one is entered automatically. (Auto-fill)
• A number entered by Auto-fill can trigger another Auto-fill. (Chain)
• Chains earn you more points.