| View previous topic :: View next topic |
| Author |
Message |
lkmckin
Joined: 25 May 2007
Posts: 9
|
 Posted: Thu Jul 19, 2007 11:34 pm Post subject: Mepham 6/17 help please |
 |
|
Stuck at this point. Tired of staring at it. Please ease my mind.
| Code: |
+------------+----------------+------------+
| 2568 56 3 | 58 258 4 | 1 9 7 |
| 28 7 18 | 38 1289 139 | 5 4 6 |
| 45 9 14 | 7 15 6 | 3 8 2 |
+------------+----------------+------------+
| 13 24 7 | 3458 34589 359 | 6 1235 158 |
| 9 8 6 | 1 35 2 | 7 35 4 |
| 13 24 5 | 6 3478 37 | 9 123 18 |
+------------+----------------+------------+
| 56 1 9 | 2 36 8 | 4 7 35 |
| 478 3 48 | 45 1457 157 | 2 6 9 |
| 47 56 2 | 9 34567 357 | 8 15 135 |
+------------+----------------+------------+
|
|
|
| Back to top |
|
 |
Steve R
Joined: 24 Oct 2005
Posts: 289
Location: Birmingham, England
|
| Posted: Fri Jul 20, 2007 11:23 am Post subject: |
|
|
The 5 in row 8 must be placed in box 8; so 5 can be eliminated from r9c5 and r9c6. This discloses a pair (37) in column 6.
Allowing for the pair brings out an xy-wing pivoted on (19) in r2c6 which eliminates a couple of 5s and takes you home.
Steve |
|
| Back to top |
|
|
lkmckin
Joined: 25 May 2007
Posts: 9
|
| Posted: Fri Jul 20, 2007 3:47 pm Post subject: |
|
|
| Thanks for the obvious solution I couldn't see. I finally got it through brute force (lots of xy chains), but of course, your solution was much better. |
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
