pencil puzzles

Sudoku is an abbreviation of the Japanese phrase “Suuji wa dokushin ni kagiru”, which means “the digits must remain single”.  Sudoku was designed by Howard Garnes, a 74-year old architect and freelance puzzle maker, and was first published in 1979 … … Read more

Sudoku Puzzles are brain teasers that have also been called wordless crossword puzzles. Sudoku Puzzles are often solved through lateral thinking and have been making a large impact all across the world.

Also known as Number Place, Sudoku puzzles are … … Read more

Mensa Guide to Solving Sudoku: Hundreds of Puzzles Plus Techniques to Help You Crack Them All