To Sudoku enthusiasts

Logic9 is our version of the popular game, Sudoku. It appears daily in Today paper and MyPaper.

Logic9 is available at several Fairprice supermarkets and bookstores. The pocketbook (suitable for your practice in the train, bus or plan) sells for $5.

It is available in 4 volumes. Each volume contains 128 puzzles at 4 levels. Each puzzle has an unique answer. The answers are given at the book (but you should not cheat). For the beginners, there are 4 tips which guide you on how solve the puzzle.

Yo can also buy the CD version (to play on your personal computer) for $5. It has 64 puzzles with 10 sets of symbols, giving a total of 640 combinatins.

For the experts, try volume 5 and 6 (available in August). It has complex puzzles at 4 levels. Each puzzle has more than 1 solution. At some point in the puzzle, you have to guess the number and see if it is right. If not, you can go back and change the number.

You can try it at www.income.coop/logic9

Good luck.