Latest Changes and Additions

A quick list of the latest updates and additions to this site:

Daily Kakuro
Date Created: Wednesday 25-Jan-2023
Last Updated: Wednesday 25-Jan-2023
Play or Print the Daily Kakuro Puzzle by Andrew Stuart

Sudoku String Definitions
Date Created: Wednesday 18-Jan-2023
Last Updated: Thursday 19-Jan-2023

Main Page
Date Created: Thursday 10-Apr-2008
Last Updated: Monday 16-Jan-2023
Strategies for Sudoku, Sudoku X, Killer Sudoku and Jigsaw Sudoku - and the home of logical puzzle maker Andrew Stuart

Sudoku Player
Date Created: Friday 13-Jan-2023
Last Updated: Friday 13-Jan-2023


What's New
Date Created: Monday 17-Aug-2009
Last Updated: Wednesday 11-Jan-2023


Daily Sudoku
Date Created: Saturday 12-Apr-2008
Last Updated: Friday 6-Jan-2023
The Daily Sudoku puzzle by Andrew Stuart. This Sudoku can be completed directly on the web page - just enter numbers in the cells. Have fun!

Almost Locked Sets
Date Created: Saturday 12-Apr-2008
Last Updated: Thursday 5-Jan-2023
Sudoku Strategy. Almost Locked Sets are complex building blocks that all allow one to continue a chain. They are groups of cells of size N with N+1 candidates in them.

Daily Jigsaw Sudoku
Date Created: Thursday 8-Sep-2011
Last Updated: Tuesday 27-Dec-2022
The Daily Jigsaw Sudoku puzzle by Andrew Stuart. This Jigsaw Sudoku can be completed directly on the web page - just enter numbers in the cells. Have fun!

Puzzle Business
Date Created: Sunday 13-Nov-2022
Last Updated: Sunday 13-Nov-2022


Extended Unique Rectangles
Date Created: Friday 24-Aug-2012
Last Updated: Saturday 11-Jun-2022
Discussion of Extended Unique Rectangles taking 2x2 Unique Rectangles to 3x2