Grades Puzzle

Grades puzzle is a logic puzzle game. Fill numbers in some cells of a grid with size of 8x8 or 12x12 that satisfy rules:

• No two horizontally, vertically or diagonally adjacent cells contain a digit
• The numbers across the top of the grid indicates or count the total of numbers in the according columns.
• The numbers down the left of the grid indicates or count the total of numbers in the according rows.
• The numbers across the bottom of the grid are the sum of numbers in the according columns.
• The numbers down the right of the grid are the sum of numbers in the according rows. Have fun! Feel free to give your feed back here!