## Cannot go further, pls help

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

### Cannot go further, pls help

Can someone tell me what next step is, the technique to be used, and explanation - trying to improve

Code: Select all
`xx7/6xx/8xx2xx/x1x/63x6xx/x4x/2x5-----------------x2x/9xx/16xx1x/3xx/x2xx86/xxx/xxx-----------------x42/59x/78687x/2xx/95x569/x78/3x2`

Thanks
Maria

Posts: 30
Joined: 19 March 2011

### Re: Cannot go further, pls help

Without pencil marks I can't tell exactly how far you have gotten. From the puzzle as presented, you will need several locked candidates, a few naked pairs, and a sashimi X-wing, also called a skyscraper, to reduce it to singles.

JasonLion
2017 Supporter

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

### Re: Cannot go further, pls help

Code: Select all
` +-------+-------+-------+ | * . 7 | 6 . . | 8 . * | | 2 . . | . 1 . | 6 3 . | | 6 . * | . 4 . | 2 . 5 | +-------+-------+-------+ | . 2 . | 9 . . | 1 6 . | | . 1 . | 3 . . | . 2 . | | . 8 6 | . . . | . . . | +-------+-------+-------+ | * 4 2 | 5 9 . | 7 8 6 | | 8 7 * | 2 . . | 9 5 * | | 5 6 9 | . 7 8 | 3 . 2 | +-------+-------+-------+`

Look at the 1 in columns 1, 3 and 9. You only have 2 possibilities each (cells marked *).
They are forming 2 skyscrapers in colums 19 (2 * being in row 1, one of r7c1 and r9c8 must be 1) and 39 (row 8, one of r3c3 or r1c9 must be 1), both solve the puzzle.

See here for skyscrapers.
eleven

Posts: 1866
Joined: 10 February 2008

### Re: Cannot go further, pls help

JasonLion wrote:Without pencil marks I can't tell exactly how far you have gotten. From the puzzle as presented, you will need several locked candidates, a few naked pairs, and a sashimi X-wing, also called a skyscraper, to reduce it to singles.

I will check on eleven's - thank you so much.
Maria

Posts: 30
Joined: 19 March 2011

### Re: Cannot go further, pls help

eleven wrote:
Code: Select all
` +-------+-------+-------+ | * . 7 | 6 . . | 8 . * | | 2 . . | . 1 . | 6 3 . | | 6 . * | . 4 . | 2 . 5 | +-------+-------+-------+ | . 2 . | 9 . . | 1 6 . | | . 1 . | 3 . . | . 2 . | | . 8 6 | . . . | . . . | +-------+-------+-------+ | * 4 2 | 5 9 . | 7 8 6 | | 8 7 * | 2 . . | 9 5 * | | 5 6 9 | . 7 8 | 3 . 2 | +-------+-------+-------+`

Look at the 1 in columns 1, 3 and 9. You only have 2 possibilities each (cells marked *).
They are forming 2 skyscrapers in colums 19 (2 * being in row 1, one of r7c1 and r9c8 must be 1) and 39 (row 8, one of r3c3 or r1c9 must be 1), both solve the puzzle.

See here for skyscrapers.

following yr advice and the link...... with patience I may succeeed - keep you posted - thanks for yr kind help
Maria

Posts: 30
Joined: 19 March 2011

### Re: Cannot go further, pls help

Maria wrote:Can someone tell me what next step is, the technique to be used, and explanation

JasonLion wrote:Without pencil marks I can't tell exactly how far you have gotten.

Maria, are you even using pencilmarks? If not, it would be helpful to say so at the outset, otherwise most people will assume you are.

eleven wrote:Look at the 1 in columns 1, 3 and 9. You only have 2 possibilities each (cells marked *).
They are forming 2 skyscrapers in colums 19 (2 * being in row 1, one of r7c1 and r9c8 must be 1) and 39 (row 8, one of r3c3 or r1c9 must be 1), both solve the puzzle.

eleven, very nice pencilmark-less solution.
ronk
2012 Supporter

Posts: 4764
Joined: 02 November 2005
Location: Southeastern USA

### Re: Cannot go further, pls help

ronk wrote:
Maria wrote:Can someone tell me what next step is, the technique to be used, and explanation

JasonLion wrote:Without pencil marks I can't tell exactly how far you have gotten.

Maria, are you even using pencilmarks? If not, it would be helpful to say so at the outset, otherwise most people will assume you are.

eleven wrote:Look at the 1 in columns 1, 3 and 9. You only have 2 possibilities each (cells marked *).
They are forming 2 skyscrapers in colums 19 (2 * being in row 1, one of r7c1 and r9c8 must be 1) and 39 (row 8, one of r3c3 or r1c9 must be 1), both solve the puzzle.

eleven, very nice pencilmark-less solution.

I am using nice pencilmarks... next time I will show.
Maria

Posts: 30
Joined: 19 March 2011

### Re: Cannot go further, pls help

Maria wrote:
eleven wrote:
Code: Select all
` +-------+-------+-------+ | * . 7 | 6 . . | 8 . * | | 2 . . | . 1 . | 6 3 . | | 6 . * | . 4 . | 2 . 5 | +-------+-------+-------+ | . 2 . | 9 . . | 1 6 . | | . 1 . | 3 . . | . 2 . | | . 8 6 | . . . | . . . | +-------+-------+-------+ | * 4 2 | 5 9 . | 7 8 6 | | 8 7 * | 2 . . | 9 5 * | | 5 6 9 | . 7 8 | 3 . 2 | +-------+-------+-------+`

Look at the 1 in columns 1, 3 and 9. You only have 2 possibilities each (cells marked *).
They are forming 2 skyscrapers in colums 19 (2 * being in row 1, one of r7c1 and r9c8 must be 1) and 39 (row 8, one of r3c3 or r1c9 must be 1), both solve the puzzle.

See here for skyscrapers.

following yr advice and the link...... with patience I may succeeed - keep you posted - thanks for yr kind help

with this link everything is clear......
Maria

Posts: 30
Joined: 19 March 2011