## Hint on a puzzle

Post the puzzle or solving technique that's causing you trouble and someone will help

### Hint on a puzzle

I'm stuck on the first puzzle of Frank Longo's "Absolutely Nasty Sudoku lvl 3"
Code: Select all
`3 . . | . 1 6 | . . .. 1 . | 7 . . | 9 2 8. . . | . 8 . | . 1 6------+-------+------. . 7 | . . 4 | . . 1. . . | . 5 . | . . .4 . . | 6 . . | 5 . .------+-------+------7 2 . | . 6 . | . . .9 8 5 | . . 2 | . 6 .. . . | 5 9 . | . . 3`

With all the basic techniques I've managed to get the following:
Code: Select all
`3 9 8 | 2 1 6 | . . .. 1 . | 7 . . | 9 2 8. 7 . | . 8 . | 3 1 6------+-------+------. 5 7 | . . 4 | 6 . 1. 6 . | . 5 . | . . .4 3 . | 6 . . | 5 . .------+-------+------7 2 3 | . 6 . | . . .9 8 5 | . . 2 | . 6 .. 4 . | 5 9 . | 2 . 3`

The only extra thing I did was to eliminate some pencilmarks on the bottom right chute, leaving it like this:
Code: Select all
`3     9      8    | 2     1      6     | 47    457    45756    1      46   | 7     34     35    | 9     2      825    7      24   | 49    8      59    | 3     1      6------------------+--------------------+-------------------28    5      7    | 389   23     4     | 6     389    1128   6      129  | 1389  5      13789 | 478   34789  24794     3      129  | 6     27     1789  | 5     789    279------------------+--------------------+-------------------7     2      3    | 148   6      18    | 148   59     599     8      5    | 134   347    2     | 147   6      4716    4      16   | 5     9      78    | 2     78     3`

If someone could give me a hint on what technique I need to use to continue I would be appreciated.
The most advanced technique I have used is XY-wing, which I used to solve puzzle number 2 of the same book, so I must be missing something with this one..
ramasama

Posts: 2
Joined: 01 September 2014

### Re: Hint on a puzzle

There is an X-Wing which leaves the puzzle solvable with just singles.

JasonLion
2017 Supporter

Posts: 640
Joined: 25 October 2007
Location: Silver Spring, MD, USA

### Re: Hint on a puzzle

Solved! Thanks a lot. I should have kept trying. It was right there!
ramasama

Posts: 2
Joined: 01 September 2014