## 6 by 6 sudoku

For fans of Killer Sudoku, Samurai Sudoku and other variants

### 6 by 6 sudoku

Map3-1.jpg (63.67 KiB) Viewed 148 times

First step locked candidate (pointing/claiming) which eliminates R4C3<>2.
Second step x-wing R16C16 which eliminates R3C1<>1 and R4C6<>1.
What I can see as next step is a skyscraper at R13C1 and R14C6 linked by row 1 which eliminates R3C4<>4 and R4C3<>4, or as alternative a w-wing at R3C1 and R4C6 linked by 2's at row 6 which eliminates R3C4<>4 and R4C3<>4. Any other possibilities I have overlooked? After this solves with singles.
begin:
Code: Select all
`.5623.........3.5..6.3.........3564.`

after basics:
Code: Select all
`.5623.3...65..3.5656.3..6..5.3.3564.`
urhegyi

Posts: 427
Joined: 13 April 2020

### Re: 6 by 6 sudoku

Some time ago, I modified SudokuExplainer to solve/rate 6x6 sudoku puzzles.
Forum post: http://forum.enjoysudoku.com/post273912.html#p273912

This solves by the X-Wing followed by 2 XY-Wings, then stte.
Code: Select all
`after singles.5623.3...65..3.5656.3..6..5.3.3564. 2.6, Pointing: Cells R4C5,R4C6: 2 in block and row: -2r4c3.5623.3...65..3.5656.3..6..5.3.3564. 3.2, X-Wing: Cells R1C1,R6C1,R1C6,R6C6: 1 in 2 rows and 2 columns: -1r3c1, -1r4c6.5623.3...65..3.5656.3..6..5.3.3564. 4.2, XY-Wing: Cells R3C1,R4C3,R6C1 on value 1: -1r5c3.5623.3...65..3.5656.3..6..5.3.3564. 4.2, XY-Wing: Cells R4C3,R4C5,R5C3 on value 2: -2r5c5stte`
1to9only

Posts: 2660
Joined: 04 April 2018

### Re: 6 by 6 sudoku

Curious but is there a practical limit on 6x6 sudoku puzzle difficulty?
Pupp

Posts: 175
Joined: 18 October 2019

### Re: 6 by 6 sudoku

1to9only

Posts: 2660
Joined: 04 April 2018