Could someone help with the next step?

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

Could someone help with the next step?

Got stuck on this:
.937612.4
....53..6
1........
.1....4.8
4.2...9.5
..8...67.
........7
6..82....
3.514.86.
Thanks much!
Amonra

Posts: 6
Joined: 10 November 2015

Re: Could someone help with the next step?

Code: Select all
`*------------------------------------------------------------*| 58   9       3    | 7      6     1      | 2    58      4   || 278 #2478    47   | 249    5     3      | 17   189     6   || 1    56-2478 467  | 249   *89   *2489   | 357  359-8   39  ||-------------------+---------------------+------------------|| 579  1       679  | 23569  379   2569-7 | 4    23      8   || 4    36-7    2    | 36     1378  68-7   | 9    13      5   || 59   35      8    | 23459  139   2459   | 6    7       123 ||-------------------+---------------------+------------------|| 289 #248     149  |*3569  *39    569    | 15-3 12459-3 7   || 6   #47      1479 | 8      2    *579    | 135  13459   139 || 3   #27      5    | 1      4    *79     | 8    6       29  |*------------------------------------------------------------*`

You don't say where you are stuck, so I've included all 4 non-trivial moves required to solve this puzzle.

After a basic mark-off there is a pointing pair of 8's in r3c56 that removes 8 from r3c28.

Next there is a pointing pair of 3's in r7c45 that removes 3 from r7c78.

Next there is a pointing pair of 7's in r89c6 that removes 7 from r45c6.

Lastly there is a naked quad (2478) in r2789c2 that removes 247 from r3c2 and 7 from r5c2.

You'll then find that 7 is a hidden single in Row 5, so r5c5 is 7.

This is the first of a whole cascade of singles that continues until the solution is complete.

For brevity I've included all four non-single moves in the diagram.

Leren
Leren

Posts: 3309
Joined: 03 June 2012

Re: Could someone help with the next step?

It was the quad! I had the rest but did not recognize the quad. Thanks!
Amonra

Posts: 6
Joined: 10 November 2015

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