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Need Help !

 
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farfel



Joined: 10 Oct 2006
Posts: 7

PostPosted: Tue Jul 03, 2007 4:27 pm    Post subject: Need Help ! Reply with quote

I got this sudoku from a local newspaper. It's rated as just Hard but I cant seem to get beyond this. The Draw/Play function on this site says the next move is a 2 in r7c6 but I cant seem to figure out why. Would anybody like to take a stab at it? I'm sure it's something not real hard but I just cant see it. Thanks

7 2 4 | 9 1 6 | 58 58 3
38 358 58 | 2 7 4 | 1 9 6
6 1 9 | 8 5 3 | 2 4 7
----------------------------------------------------------
18 67 18 | 3 9 57 | 4 256 25
5 4 3 | 67 2 1 | 678 68 9
9 67 2 | 567 4 8 | 3567 1356 15
-----------------------------------------------------------
13 35 6 | 57 8 257 | 9 1235 4
4 589 7 | 1 3 259 | 56 256 258
2 3589 158 | 4 6 59 | 35 7 158
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Mogulmeister



Joined: 03 May 2007
Posts: 695

PostPosted: Tue Jul 03, 2007 5:22 pm    Post subject: Reply with quote

In column 8 there is a hidden pair (or naked quad if you prefer) which will remove a 2 in that very column - leaving a 2 in R7 only available in the hint square you suggested.
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farfel



Joined: 10 Oct 2006
Posts: 7

PostPosted: Tue Jul 03, 2007 5:35 pm    Post subject: Reply with quote

Tthanks Mogulmeister. I knew it wasnt too complex an answer. As Homer Simpson would say, DOH ! I'm sure glad this forum is anonymous. Maybe I should stick to cryptgrams and crosswords. Rolling Eyes
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Mogulmeister



Joined: 03 May 2007
Posts: 695

PostPosted: Tue Jul 03, 2007 5:40 pm    Post subject: Reply with quote

Not at all - I guess that's one of the reasons this forum exists. As to that being obvious - it takes a while to spot hidden pairs - which is why I saw the naked quad first !
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Asellus



Joined: 05 Jun 2007
Posts: 865
Location: Sonoma County, CA, USA

PostPosted: Tue Jul 03, 2007 6:00 pm    Post subject: Reply with quote

Without spotting the hidden pair, there is also a W-Wing on 67 in R5 and R6 that eliminates <7> from R6C4. It doesn't immediately produce the desired <2>, but it does solve the puzzle.
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