Very Hard Cannot make progress

Advanced methods and approaches for solving Sudoku puzzles

Very Hard Cannot make progress

Postby Roger Scriven » Wed Jun 22, 2005 11:19 am

I started with this from the program
*8* 35* **9
*67 *** ***
*** **8 4**

*31 8** ***
*4* 7*6 *9*
*** **1 73*

**3 6** ***
*** *** 81*
8** *74 *6*

and got as far as this and am now stuck
184 357 629
*67 41* *8*
3** *68 471

731 8** 2*6
*4* 736 19*
*** **1 73*

*13 68* 9*7
*7* **3 81*
8** 174 *6*

would appreciate some help.
Roger Scriven
 
Posts: 15
Joined: 12 May 2005

Postby simes » Wed Jun 22, 2005 11:29 am

X-wing for 2 in columns 1 and 6, rows 2 and 7.

(Follow the techniques link from the address below for my attempt at a description of xwings.)
Last edited by simes on Sun Dec 11, 2011 9:55 am, edited 1 time in total.
simes
 
Posts: 324
Joined: 11 March 2005
Location: UK

Postby Roger Scriven » Wed Jun 22, 2005 12:08 pm

Thank you
I am happy about x-wings but didn't spot it
Wood and trees comes to mind
Roger Scriven
 
Posts: 15
Joined: 12 May 2005


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