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a hard "hard"

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nataraj

Joined: 03 Aug 2007
Posts: 1048
Location: near Vienna, Austria

Posted: Sat Dec 12, 2009 4:43 pm Post subject: a hard "hard"

Once, more a toughie from the local paper:

Code:

+-----------+-----------+-----------+
| . 6 . | . . 3 | . . . |
| 1 . . | . . 5 | 4 . . |
| . . 7 | . . . | . 9 . |
+-----------+-----------+-----------+
| . . . | . . 2 | . . 4 |
| . . . | . . . | 5 8 . |
| 4 5 . | 9 . . | . 3 2 |
+-----------+-----------+-----------+
| . 7 . | . 3 . | . . . |
| . . 6 | . 2 8 | . . 1 |
| . . . | 7 . 4 | . 5 9 |
+-----------+-----------+-----------+

play online

Hint: naked quint 1 2 3 8 9 / hidden pair 45 in col 3

daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Tue Dec 15, 2009 2:34 am Post subject:

It's all about the candidates you don't readily see!

Code:

c5b2 Hidden Pair = 79 r12c5
c1b4 Hidden Pair = 67 r45c1
c3 Hidden Pair = 45 r17c3

r5 b4 Hidden Pair = 29 r5c23

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