• Fill in the digits 1 to 9 in the grid.
• Set of three sequential cells along the orange line must contain a low digit (123), a middle digit (456) and a high digit (789).
• Digits on the orange line have same modulo 3.
• Digit in the circle is sum of the digits on the attached line.
• Digit outside the grid is either a Sky Scrapper clue or represnt sum of the digits on corrosponding row, column or diagonal.

• Holding down the Corner, Center or Colour keys will switch to respective mode till the key is released.u
• Holding down Digit key will enable arrow keys, escape and delete.

Default keymap can be changed by visiting Vial while keyboard is connected.