Japan Top Sites for Puzzles And Brainteasers

    Lumosity.com

    Sudokugame.org

    Nikoli.com

    Visualizing.info

    Numberplace.net

    Luidas.com

    Puzzledragonx.com

    Ptmind.com

    Knowledge-works.co.jp

    Jigzone.com

    Web-know.com

    Home-knowledge.com

    Se-knowledge.jp

    Allthetests.com

    247sudoku.com

    Cmind-co.jp

    Kodnet.co.jp

    Krazydad.com

    Su-doku.org

    Brain-mind.jp

    Cut-the-knot.org

    Thejigsawpuzzles.com

    Hatter-knowledge.com

    Azumazeki.jp

    Kmsj.org

    Cr-mind.co.jp

    Knowledge-ex.co.jp

    Vigomind.com

    Testedich.de

    Anagrammer.com

    Smarttech.com

    Brainden.com

    Crosswordtracker.com

    Emind.co