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🔭 My free software (自作プログラム)

I develop programs for work (research on soil physics) and for fun. Here you can find some of my published programs. Python packages are also released.

Puzzle (パズル)

  • Kaidoku (解独) - solve, play and create sudoku puzzles (ナンプレ) with a command-line interface. It shows logics for solving a puzzle. Online player and PDF books are also available.
  • 15 Puzzle (15パズル) - online player of a sliding puzzle. The size of the puzzle can be changed to 3, 8, 15, 24, 35, ... kaidoku 15 puzzle

Soil physics (土壌物理学)

  • SWRC Fit - a web interface for fitting soil water retention curve used in many researches.
  • Unsatfit - Python library for optimizing parameters of functions of soil hydraulic properties. SWRC Fit uses unsatfit, and unsatfit also fits unsaturated hydraulic conductivity.
  • EC fit - fit soil water and electrical conductivity (EC) model to measured data.
  • Discfit - read disc permeameter data in the field and calculates hydraulic parameters of the soil.
  • Recommendation - お薦めしていただきました。

Security (セキュリティ)


🌱 Non-IT stuffs

3手詰め 3手詰め

📫 How to reach me

  • If you like my software, I always welcome your feedback by mentioning me at twitter in English or Japanese.
  • Please find my email address in this paper.


  1. unsatfit Public

    Fitting functions of soil hydraulic properties

    Python 3 1

  2. swrcfit Public

    Fitting soil water retention curve

    Shell 9 3

  3. kaidoku Public

    player, solver and creater of sudoku puzzles

    Python 8


    JavaScript 6 1

  5. passme Public

    Password management with command line

    Python 1

  6. discfit Public

    Disc permeameter fitting program

    Python 1

637 contributions in the last year

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Contribution activity

October 2022

sekika has no activity yet for this period.

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