Normal Mode: A logic-based number-placement puzzle. The objective is to fill a 4x4, 6x6, or 9x9 grid with digits so that each column, each row, and each of the subgrids contain all of the digits from 1 to the grid's size. Select a cell and use the number buttons to place a digit.



Rubik's Mode: For a mind-bending twist, try 'Rubik's Mode'! The board is completely full. Your goal is to solve the puzzle by rotating entire rows and columns. Use the arrow buttons to shift the numbers and align them correctly.