Soduko are popular logic puzzles using the numbers 1 to 9 in a grid. You must complete the grid so each row, column, and 3-by-3 box (in bold borders) contains every digit 1 to 9. No row, column, or 3×3 box can feature the same number twice.
Put the numbers 1 to eight in each of the squares so that each side adds up to the middle number.
Use Simple Algebra in These Fun Puzzles!
Work out the value of each picture in the puzzle and fill in the number which should replace the question mark at the end.