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  2. KenKen - Wikipedia

    en.wikipedia.org/wiki/KenKen

    A simple KenKen puzzle, with answers filled in as large numbers. KenKen and KenDoku are trademarked names for a style of arithmetic and logic puzzle invented in 2004 by Japanese math teacher Tetsuya Miyamoto, [1] who intended the puzzles to be an instruction-free method of training the brain. [2] The name derives from the Japanese word for ...

  3. Tetsuya Miyamoto - Wikipedia

    en.wikipedia.org/wiki/Tetsuya_Miyamoto

    Tetsuya Miyamoto (宮本 哲也, Miyamoto Tetsuya, born 1959) is a Japanese mathematics teacher who invented the numerical logic puzzle KenKen. (It is called Kashikoku-Naru-Puzzle in Japanese, which literally means "a puzzle that makes you smarter." It is also known as Keisan Block .) Miyamoto developed KenKen in 2003 to help his students ...

  4. The New York Times crossword - Wikipedia

    en.wikipedia.org/wiki/The_New_York_Times_crossword

    The KenKen and second Sunday puzzles are available online at the New York Times crosswords and games page, as are "SET!" logic puzzles, a word search variant called "Spelling Bee" in which the solver uses a hexagonal diagram of letters to spell words of four or more letters in length, and a monthly bonus crossword with a theme relating to the ...

  5. Inshi no heya - Wikipedia

    en.wikipedia.org/wiki/Inshi_no_heya

    The puzzle starts with all the cells empty. The goal is to fill all the cells with nonzero single-digit numbers (1 through n, where n is the length of the grid's edge) such that: Solved Inshi No Heya grid The numbers in each room, when multiplied together, equal the small number in the upper left corner of the room

  6. 30 Printable Crossword Puzzles to Test Your Smarts - AOL

    www.aol.com/30-printable-crossword-puzzles-test...

    The post 30 Printable Crossword Puzzles to Test Your Smarts appeared first on Reader's Digest. Show comments. Advertisement. Advertisement. Elections 20 24. Associated Press.

  7. Play Daily Jigsaw Online for Free - AOL.com

    www.aol.com/games/play/masque-publishing/daily...

    Come back every day for a fresh new Jigsaw puzzle! By Masque Publishing. Advertisement. Advertisement. Feedback. Help.

  8. Eight queens puzzle - Wikipedia

    en.wikipedia.org/wiki/Eight_queens_puzzle

    Eight queens puzzle. The eight queens puzzle is the problem of placing eight chess queens on an 8×8 chessboard so that no two queens threaten each other; thus, a solution requires that no two queens share the same row, column, or diagonal. There are 92 solutions. The problem was first posed in the mid-19th century.

  9. Sudoku - Wikipedia

    en.wikipedia.org/wiki/Sudoku

    A Sudoku with 18 clues and two-way diagonal symmetry. This section refers to classic Sudoku, disregarding jigsaw, hyper, and other variants. A completed Sudoku grid is a special type of Latin square with the additional property of no repeated values in any of the nine blocks (or boxes of 3×3 cells).