Got following valid Expert level standard Sudoku puzzle from Sudoku Master for Android:
- Code: Select all
I am interested to solve with Naked / Hidden Single/Pair/Triple/Quad, Pointing and Claiming Intersection Removal, Box-Line Reduction Intersection Removal, X-Wing, Sword Fish, Jelly Fish, XY-Wing, XYZ-Wing and Guess strategies.
The above mentioned puzzle become unsolvable with all above strategies and solved without XY-Wing and XYZ-Wing strategies.
Currently I have coded XY-Wing and XYZ-Wing in my Sudoku solver program and tested various puzzles.