Latest Changes and Additions
A quick list of the latest updates and additions to this site:
Main Page
Date Created: Thursday 10-Apr-2008
Last Updated: Wednesday 13-Mar-2024
Strategies for Sudoku, Sudoku X, Killer Sudoku and Jigsaw Sudoku - and the home of logical puzzle maker Andrew Stuart
Daily Jigsaw Sudoku
Date Created: Thursday 8-Sep-2011
Last Updated: Thursday 29-Feb-2024
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!
Daily Sudoku
Date Created: Saturday 12-Apr-2008
Last Updated: Thursday 29-Feb-2024
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!
What's New
Date Created: Monday 17-Aug-2009
Last Updated: Sunday 11-Feb-2024
Daily Codewords
Date Created: Tuesday 30-Jan-2024
Last Updated: Tuesday 30-Jan-2024
In Codewords numbers are substituted for letters in the crossword grid. Try to find the words where each number must be one particular letter.
Extended Unique Rectangles
Date Created: Friday 24-Aug-2012
Last Updated: Saturday 27-Jan-2024
Discussion of Extended Unique Rectangles taking 2x2 Unique Rectangles to 3x2
Easiest Sudoku Competition
Date Created: Saturday 9-May-2009
Last Updated: Saturday 16-Dec-2023
Innies and Outies
Date Created: Sunday 13-Apr-2008
Last Updated: Monday 23-Oct-2023
Killer Sudoku Strategy. An essential strategy for Killer Sudoku. It looks at the cells in cages which all inside or outside a unit or group of units. Since a unit must add up to 45 (in 9x9 Killer) overlaps can help remove candidates.
Rectangle Elimination
Date Created: Saturday 7-Oct-2023
Last Updated: Monday 23-Oct-2023
A new tough strategy by Ken Reek
Strategy Families
Date Created: Saturday 12-Apr-2008
Last Updated: Sunday 22-Oct-2023
This is the index to the all the fully documented strategies used to solve Sudoku, Jigsaw Sudoku, Sudoku X and Killer Sudoku.