• Visit our store

    Interested in more puzzles? Get more original puzzles at our e-book store, including "The Art of Puzzles" collection with challenges from many of the world's best authors.

  • Tip Jar

    If you enjoy our free web content, consider giving a donation back to the site or to the authors (name the amount/author in your donation as appropriate if giving to a specific contributor)

  • About

  • Posts by Category

  • Archives

  • Creative Commons License
    This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

    • Japanese Sums by JinHoo Ahn

    Japanese Sums by JinHoo Ahn

    PDF

    or solve online (using our beta test of Penpa-Edit tools; use tab to shift between number entry and shading modes.)

    Theme: Magic Squares

    Author/Opus: This is the 32nd puzzle from our contributing puzzlemaster JinHoo Ahn.

    Rules: Place the digits in the indicated range (1-9) in some of the cells so that no digit is repeated in any row or column. Numbers on the outside of the grid indicate the sums of adjacent digit groups in that row or column, in order. Each sum is separated by at least one unused cell.

    Japanese Sums Example

    Difficulty: 4.5 stars

    Time Standards (highlight to view): Grandmaster = 7:15, Master = 20:00, Expert = 40:00

    Solution: PDF; a solution video is also available here.

    Note: Follow this link for other Japanese Sums puzzles.

    Posted in Japanese Sums, Puzzle by , 09/17/21 9:00 AM
    No Comments »

    Leave a Reply

    Your email address will not be published. Required fields are marked *

    This site uses Akismet to reduce spam. Learn how your comment data is processed.

    ◀ ▶