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unable to post question

 
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garug
New kid on the Grid
New kid on the Grid


Joined: 31 Dec 2005
Posts: 3

PostPosted: Sat Dec 31, 2005 8:05 pm    Post subject: unable to post question Reply with quote

how do i post the grid with my possibles?
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Ruud
Site Owner
Site Owner


Joined: 30 Dec 2005
Posts: 601

PostPosted: Sat Dec 31, 2005 8:30 pm    Post subject: Reply with quote

Assuming you're using Sudo Cue,

press {Control}+{M} or choose the menu option Edit/Copy Marks.

Paste the grid here in your topic, then put Code tags around it.

Good luck,

Ruud.
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“If the human brain were so simple that we could understand it, we would be so simple that we couldn't.” - Emerson M Pugh
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garug
New kid on the Grid
New kid on the Grid


Joined: 31 Dec 2005
Posts: 3

PostPosted: Sat Dec 31, 2005 11:16 pm    Post subject: what do I do next to solve this? Reply with quote

.---------------.---------------.---------------.
| 35 358 358 | 4 7 1 | 6 2 9 |
| 9 4 6 | 3 58 2 | 178 57 15 |
| 7 2 1 | 68 9 568 | 38 4 35 |
:---------------+---------------+---------------:
| 356 3578 358 | 678 1 9 | 2 57 4 |
| 56 9 2 | 67 3 4 | 17 8 156 |
| 1 378 4 | 5 2 68 | 37 9 36 |
:---------------+---------------+---------------:
| 4 1 35 | 2 58 358 | 9 6 7 |
| 2 6 9 | 1 4 7 | 5 3 8 |
| 8 35 7 | 9 6 35 | 4 1 2 |
'---------------'---------------'---------------'
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Ruud
Site Owner
Site Owner


Joined: 30 Dec 2005
Posts: 601

PostPosted: Sun Jan 01, 2006 2:20 am    Post subject: Reply with quote

hi garug,

welcome to this forum.

From the candidates you posted, I can only conclude that you have a very difficult Sudoku at hand.

The first step is not so complicated. There are locked candidates for digit 3 in row 4, box 4.

After that you need advanced colouring and tabling.

This puzzle may be a little to difficult for a beginning player. Start practicing with a few easier puzzles and move on to more difficult ones when you have mastered advanced solving techniques. Check the opened and generated puzzles with F7, to see what solving techniques are required.

Ruud.
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garug
New kid on the Grid
New kid on the Grid


Joined: 31 Dec 2005
Posts: 3

PostPosted: Mon Jan 02, 2006 7:16 pm    Post subject: Locked candidates in Row 4 Reply with quote

I am not sure what that means.

Could it mean that the 3, 5 & 8 are the only candidates for Row 4, box 4?
That would place a 6 & 7 in that box....& maybe solve the puzzle!!

Thanks for your help, Rudd.
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Ruud
Site Owner
Site Owner


Joined: 30 Dec 2005
Posts: 601

PostPosted: Mon Jan 02, 2006 10:33 pm    Post subject: Reply with quote

Sorry, it is not that simple...

The first step would be eliminate candidate 3 from R6C2, leaving only 7 and 8.

The second step eliminates 5 from R4C2 through colouring.

The next step tries candidate 5 in R1C1, which fails, so it can be eliminated.

The next step tries candidate 5 in R2C9, which fails, so it can be eliminated.

The next step tries candidate 5 in R3C6, which fails, so it can be eliminated.

Only then the puzzle is broken.

Ruud.
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“If the human brain were so simple that we could understand it, we would be so simple that we couldn't.” - Emerson M Pugh
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Steve
Regular
Regular


Joined: 24 Jan 2006
Posts: 12
Location: England

PostPosted: Tue Jan 24, 2006 3:13 am    Post subject: what do I do next to solve this? Reply with quote

If you prefer patterns to chains, you might use a four star constellation after Ruud’s first step. The alpha star, cell (6, 9) containing (356), requires 3 to be eliminated from cell (3, 9). It therefore contains 5 and the rest is elementary.

Steve
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lac
Hooked
Hooked


Joined: 02 Jan 2006
Posts: 43
Location: Göteborg, Sweden

PostPosted: Tue Jan 24, 2006 8:30 am    Post subject: Four Star Constellation Reply with quote

Ooooh. New term. Can you define it, or point us to a URL that does
so?

Thanks very much,
Laura
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Steve
Regular
Regular


Joined: 24 Jan 2006
Posts: 12
Location: England

PostPosted: Tue Jan 24, 2006 3:52 pm    Post subject: Constellations Reply with quote

The constellations were observed from Munich by someone_somewhere. They include four-star, five-star and other varieties. The constellations are interesting and reasonably common in difficult puzzles but not easily identified – my computer found this one when testing my beginner’s solver program.

Steve
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