This blog deals with grid-based puzzles and the various types of logic and ideas used to solve them. It also contains notices, information and results about various puzzle and sudoku championships across the globe.
Place numbers in the grid such that each row, column and 3x3 box contain the numbers 1 to 9. Both the diagonals, too, should contain the numbers 1 to 9.
Fill the grid with digits 1 to 9 so as to form horizontal and vertical digits series. Each empty cell contains one digit. The digits in a series are all different. The sum of the digits in each Across answer equals to the value given to the left, and the sum of the digits in each Down answer equals to the value given above.
Place numbers in the grid such that each row, column and 3x3 box contain the numbers 1 to 9. Shaded cells contain even numbers while other cells contain odd numbers.
Enter the letters in the given range (eg. A~C), each letter exactly once, in all of the rows and columns. One or more cells may remain empty in each row and column. The letters outside the grid show which letter you come across first from that direction.