## X-treme Friday Dec 22 - no doddle

Welcome to the world of the unknown. Each day you need to solve <a href="http://www.sudocue.net/xfile.php">two mysteries</a>.<br>Take the X-R-Size or solve the X-Treme problem. Stuck? Found a nice solution? Tell us about it.
sudokuEd
Grandmaster
Posts: 257
Joined: Mon Jun 19, 2006 11:06 am
Location: Sydney Australia

### X-treme Friday Dec 22 - no doddle

Maybe Ruud heard emm's MOAM on that other thread? Dec 22 X-treme's found it's X

Next move someone?

Code: Select all

``````.------------------.------------------.------------------.
| 8     3     2    | 69    69    1    | 7     4     5    |
| 4     17    15   | 258   357   2378 | 238   6     9    |
| 59    79    6    | 258   3457  23478| 38    1     23   |
&#58;------------------+------------------+------------------&#58;
| 235   6     358  | 4     1     9    | 235   3578  2378 |
| 159   189   7    | 3     2     6    | 4     589   18   |
| 239   4     13   | 7     8     5    | 123   39    6    |
&#58;------------------+------------------+------------------&#58;
| 67    5     4    | 168   367   378  | 9     2     178  |
| 67    18    38   | 12569 5679  27   | 15    37    4    |
| 13    2     9    | 158   457   478  | 6     578   137  |
'------------------'------------------'------------------'``````
emm
Hooked
Posts: 34
Joined: Wed Oct 11, 2006 6:01 pm
Ed, would you like the XY chain or the ALS

(9=3)-r6c8-(3=7)-r8c8-(7=1)-r2c2-(1=5)-r2c3-(5=9)-r3c1 -> r6c1<>9

ALS(A=[r68c8], , X=7, Z=9) -> [r6c1]<>9

PS: Mother of All Moans?
sudokuEd
Grandmaster
Posts: 257
Joined: Mon Jun 19, 2006 11:06 am
Location: Sydney Australia
emm wrote:would you like the XY chain or the ALS
The chain thanks - more Christmassie.

OK, my turn - then back to mutilating more presents by 'wrapping' them.

1 in r9c9 -> 1 in r8c2 -> no 1 in r5c2
1 in r2c2 -> no 1 in r5c2
-> no 1 in r5c2

Code: Select all

``````.------------------.------------------.------------------.
| 8     3     2    | 69    69    1    | 7     4     5    |
| 4     17    15   | 258   357   2378 | 238   6     9    |
| 59    79    6    | 258   3457  23478| 38    1     23   |
&#58;------------------+------------------+------------------&#58;
| 235   6     358  | 4     1     9    | 235   3578  2378 |
| 159   89    7    | 3     2     6    | 4     58    18   |
| 23    4     13   | 7     8     5    | 123   9     6    |
&#58;------------------+------------------+------------------&#58;
| 67    5     4    | 168   367   378  | 9     2     178  |
| 67    18    38   | 12569 5679  27   | 15    37    4    |
| 13    2     9    | 158   457   478  | 6     578   137  |
'------------------'------------------'------------------'``````
PS yep
emm
Hooked
Posts: 34
Joined: Wed Oct 11, 2006 6:01 pm
Strong links on 3s -> r4c1<>3

then

ALS(A=[r46c1], B=[r26c3], X=3, Z=5 -> [r3c1]<>5
Para
Yokozuna
Posts: 384
Joined: Wed Nov 08, 2006 7:42 pm
Location: The Netherlands

### Just practising

I was just practising a little on the x-files. Also did this one and thought i just share a little.
There's an easier way to crack the puzzle

Code: Select all

``````.------------------.------------------.------------------.
| 8     3     2    | 69*   69*   1    | 7     4     5    |
| 4     17    15   | 258   357   2378 | 238   6     9    |
| 59    79    6    | 258   3457  23478| 38    1     23   |
&#58;------------------+------------------+------------------&#58;
| 235   6     358  | 4     1     9    | 235   3578  2378 |
| 159   189   7    | 3     2     6    | 4     589   18   |
| 239   4     13   | 7     8     5    | 123   39    6    |
&#58;------------------+------------------+------------------&#58;
| 67    5     4    | 168   367   378  | 9     2     178  |
| 67    18    38   | 12569*5679* 27   | 15    37    4    |
| 13    2     9    | 158   457   478  | 6     578   137  |
'------------------'------------------'------------------'``````
Take this UR. 69 locked in R1C45, 9 locked in R8C45 which eliminates 6 from R8C45. This gives you the 6 in R8C1 and the 7 in R7C1. this gives you a naked pair 18 in R57C9 and the puzzle falls.

Para