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SR
Joined: 12 Oct 2005
Posts: 21
Location: Cornwall
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 Posted: Fri Oct 14, 2005 11:04 pm Post subject: I am stuck |
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2xx x1x xx8
x7x 28x 5xx
6xx 3xx x9x
9xx x4x x5x
xx2 xxx 1xx
x3x x6x xx7
85x x27 xx3
xx4 xx8 x6x
1xx x9x xxx
Can anyone help? |
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chobans
Joined: 21 Aug 2005
Posts: 39
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| Posted: Fri Oct 14, 2005 11:29 pm Post subject: |
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In column 6, 1 can ONLY go in box 5(r4c4-r6c6) so you can eliminate 1 from other cells in box 5. So r4c4 - {7,8} and r6c4 - {5,8,9}.
If you look at box 5, {1,2} can ONLY go in r4c6 and r6c6. This is called hidden pair. So you can eliminate other possibilities from these two cells.
Then look at row 4. 3 can ONLY go at r4c7. So you can put a 3 there and I think it's pretty much clear sailing from there. |
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SR
Joined: 12 Oct 2005
Posts: 21
Location: Cornwall
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| Posted: Sat Oct 15, 2005 7:24 am Post subject: |
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| Yes! Thanks. |
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