The New Sudoku Players' Forum

[Kunegochu]

the puzzle started as this 48.5.6.12...8..467.62.1...3....9......4...6..53.4.82.1...6....42.....35.6..1.279.
i got here
48.5.6912...82.467.62.14583.2639.8458.42..639539468271...6..1242.....3566..1.2798

also can you tell me the techniques used to solve this puzzle

[daj95376]

If, after 43 posts, this is the best format that you can present, then the best answer that I can give is that you've found all of the naked and hidden singles.

[Pat]

what is the next step

the puzzle started as this --

Code: Select all

 4 8 . | 5 . 6 | . 1 2
 . . . | 8 . . | 4 6 7
 . 6 2 | . 1 . | . . 3
-------+-------+------
 . . . | . 9 . | . . .
 . . 4 | . . . | 6 . .
 5 3 . | 4 . 8 | 2 . 1
-------+-------+------
 . . . | 6 . . | . . 4
 2 . . | . . . | 3 5 .
 6 . . | 1 . 2 | 7 9 .



i got here --

Code: Select all

 4 8 . | 5 . 6 | 9 1 2
 . . . | 8 2 . | 4 6 7
 . 6 2 | . 1 4 | 5 8 3
-------+-------+------
 . 2 6 | 3 9 . | 8 4 5
 8 . 4 | 2 . . | 6 3 9
 5 3 9 | 4 6 8 | 2 7 1
-------+-------+------
 . . . | 6 . . | 1 2 4
 2 . . | . . . | 3 5 6
 6 . . | 1 . 2 | 7 9 8



also can you tell me the techniques used to solve this puzzle

• the next step -- the "naked" duo ={7,9} in r8 or in b8
  
• the techniques used to solve this puzzle -- SuDoku Explainer suggests you'll need an xy-wing

[Kunegochu]

the last step i did was the xwing with 3 in row 2 and 7

[Kunegochu]

lol completely missed that, thank you

[Kunegochu]

i used all basics other than that, i think i see a column based swordfish with 7s off of the 79 you showed me i think i may have found the chain thing off of the 9s in 79 to erase a 9 in r2c1 i may be wrong

[Pat]

i pointed you to SuDoku Explainer because that will give you all the techniques used to solve the puzzle -- as many hints as you wish