Simsu is a basic Sudoku game. You can switch between filling in notes (pencil mode), or filling in answers (pen mode). To make it easier to see where to place numbers, you can highlight all instances of a number. You can also check your answers for correctness while playing. The game stores your current notes and answers, so that you can pick up where you left off the next time you play.


A sample game

A sample game in the widescreen layout

Release Notes

  • Changes in version 1.3.2
    • Released on January 30th, 2016
    • FIXED: Switching keys was slow
    • FIXED: Moving focus betweens cells was slow
    • FIXED: Success message was not high DPI
    • Translation updates: Bulgarian, Catalan, German, Greek, Polish, Portuguese, Spanish
  • Changes in version 1.3.1
    • Released on January 25th, 2015
    • FIXED: Application layout did not respect RTL languages
    • FIXED: All new games used the same seed in Windows
    • Translation updates: Lithuanian
  • Changes in version 1.3.0
    • Released on January 23rd, 2015
    • Added support for high DPI displays
    • Switched to C++11 random classes
    • Removed support for Qt 4
    • Translation updates: Bulgarian, Czech, German, Greek, French, Lithuanian, Malay, Polish, Romanian, Spanish (Chile), Turkish
  • Changes in version 1.2.3
    • Released on February 14th, 2013
    • Hungarian translation added by Tóth Attila
    • Romanian translation added by Jaff (Oprea Nicolae)
    • Added support for Qt 5
  • Changes in version 1.2.2
    • Released on January 25th, 2012
    • Highlights text when all cells are found
    • Highlights column and row of current cell
    • New program icon
    • Russian translation added by Alexander Vorobyev
    • Added Catalan translation
    • Added French translation
    • Added Greek translation
    • Added Spanish translation
    • Added Spansih (Chile) translation
    • Added Ukranian translation
  • Changes in version 1.2.1
    • Released on March 30th, 2009
    • Czech translation added by Pavel Fric
  • Changes in version 1.2.0
    • Released on March 28th, 2009
    • Added multiple types of symmetry
    • Added an easier solving algorithm
    • Added a widescreen layout
  • Changes in version 1.1.0
    • Released on February 27th, 2009
    • Added support for undo and redo
    • Added support for highlighting current number
    • Added number entry buttons
    • Added selectable givens
  • Changes in version 1.0.0
    • Released on January 18th, 2009
    • New project