Sudoku Archive: 05-04-2025, 16x16 (Giant), Hard

Sudoku Archive:

Puzzle options: Change difficulty: Play this puzzle at Easy level
Available Sudoku Types: Kids - Regular - Giant - Huge
Sudoku Permalink:

Copy this link for an absolute reference to this Puzzle

If you have any suggestions or other leave a comment at the bottom of the page

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Keyboard control:

[cursor keys] - Move cursor
[1-9] - Write a value
[Ctrl]+[1-9] - Write note
[Del] / [<-] - Delete value

Mouse control:

Left-Click - Choose a value
Right-Click - Edit notes
Mouse Wheel - Increase/descrease value (if enabled)

Briefly about game rules:

The object of Sudoku is to fill the empty cells with numbers (or letters) and a number should appear only once on each row, column and a region (regions are 4x4 sub-grids).

For detailed info read here:
How to play Sudoku

Requires Java

Heracleum Sudoku:

Play Heracleum Sudoku online and free! A Set of EIGHT new puzzles every day! Four sizes (4x4, 9x9, 16x16, 25x25) in two difficulty levels. Your new Daily Sodoku source

Info: The first stable Version 1.4.0 released! Lots of Bugs now fixed. Have fun!

A new set of puzzles is updated exactly at 00:00 CET, so at midnight of Central Europe timezone.
You can play all past editions of Sudoku puzzles -in all their variants- of the last 30 days choosing a date from Sudoku Archives menu at the top-left.
Note: every Sudoku puzzle grants a unique solution, you will never come to the point where the only way to go on is by guessing.
Have fun!

Leave here a comment about Heracleum Sudoku

Suggestions and new ideas welcome, since the applet is still under development. For instance about new useful functions or notify malfunctions or whatever concerning the Java Applet.
Go to the Heracleum Sudoku Comments page.