Recently, I've been spending my free time doing Paint by Numbers, which is a type of logic puzzle not totally unlike Sudoku. Basically, you're given some numerical clues and using these clues you're supposed to fill in boxes. After the puzzle is complete the shaded boxes will reveal a picture. Of course, my explaination isn't really that good - for a clearer explanation check out Wikipedia's article , or better, try out some sample puzzles here.
If after trying the puzzles you discover you like it, you can signup for a free account at Griddlers Net, which has many such Paint by Numbers puzzles.
Of course, I am not to blame if you discover that your free time has somehow vanished. =)
Technorati Tags : Paint by Numbers , Griddlers