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sudokuEd Grandmaster

Joined: 19 Jun 2006 Posts: 257 Location: Sydney Australia
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Posted: Wed Nov 22, 2006 10:41 am Post subject: X-treme 22 Nov ALSxz!! |
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Found one emm! So excited - can hardly typex.
After very slow progress, managed to get today's X-treme to this spot - then completely stuck. Think I've found an ALSxz elimination which solves the puzzle. Please don't let me be tricked again .
A =[r4c147], B=[r4c9, r5c8, r6c9], X=1, Z=9 =>[r4c8]<>9
Code: | .------------.------------.------------.
| 3 9 4 | 6 1 2 | 57 57 8 |
| 6 8 7 | 5 4 3 | 19 2 19 |
| 5 1 2 | 79 8 79 | 4 6 3 |
:------------+------------+------------:
| 78 4 5 | 79 23 6 | 18 39 127|
| 2 3 1 | 8 5 79 | 6 79 4 |
| 78 6 9 | 1 23 4 | 58 35 27 |
:------------+------------+------------:
| 1 2 3 | 4 6 5 | 79 8 79 |
| 4 7 6 | 2 9 8 | 3 1 5 |
| 9 5 8 | 3 7 1 | 2 4 6 |
'------------'------------'------------' |
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emm Hooked

Joined: 11 Oct 2006 Posts: 34
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Posted: Wed Nov 22, 2006 11:31 am Post subject: |
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Eureka, Ed! That looks like a bona fide ALS to me.
There is another way of getting past that stage though ... she says mysteriously...  |
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emm Hooked

Joined: 11 Oct 2006 Posts: 34
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Posted: Fri Nov 24, 2006 8:21 pm Post subject: X-treme 24 Nov |
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It's an infestation!
Code: | .------------.------------.------------.
| 2 4 1 | 58 578 57 | 9 3 6 |
| 9 5 6 | 3 2 4 | 8 1 7 |
| 7 3 8 | 1 6 9 | 5 4 2 |
:------------+------------+------------:
| 3 8 5 | 7 1 2 | 4 6 9 |
| 6 2 9 | 58 4 3 | 7 58 1 |
| 4 1 7 | 9 58 6 | 3 2 58 |
:------------+------------+------------:
| 5 6 3 | 2 9 78 | 1 78 4 |
| 1 7 4 | 6 3 58 | 2 9 58 |
| 8 9 2 | 4 57 1 | 6 57 3 |
'------------'------------'------------' |
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