Difference between Logic9 and Sudoku

Dear Mr Tan

I find that a difficult puzzle in Logic9 is easier to solve, compared to Sudoku, even though the number of initial blanks are about the same. I find Logic9 more enjoyable. Can you explain the difference between Logic9 and Sudoku?

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REPLY:

Logic9 follows the same rules as Sudoku. You have to fill in the blanks with the numbers 1 to 9 so that it does not repeat in every row, column or box (3X3 squares). This puzzle is printed daily in Today (as Sudoku Plus) and MyPaper (as Logic9).

When I generate a difficult puzzle, I make sure that it has a unique, logical solution. If you follow the right steps, you will be able to solve any difficult puzzle. This is why my puzzles are quite enjoyable to solve for people who like to think logically.

You can find out more about Logic9 here.

If you buy the Logic9 book, you will get 4 tips on how to solve the puzzles, including the difficult level. The booklets are available from many bookstores listed in the website.