The New Sudoku Players' Forum

[nigelsadler]

Help!

This is a difficult puzzle from a book called Sudoku Grand Masters, No. 21

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¦¦ 189 ¦ 58 ¦ 15 ¦¦ 2 ¦ 6 ¦ 7 ¦¦ 3 ¦ 89 ¦ 4 ¦¦
¦¦ 139 ¦ 7 ¦ 6 ¦¦ 139 ¦ 8 ¦ 4 ¦¦ 2 ¦ 59 ¦ 159 ¦¦
¦¦ 2 ¦ 4 ¦ 13 ¦¦ 139 ¦ 5 ¦ 139 ¦¦ 6 ¦ 7 ¦ 189 ¦¦
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¦¦ 1378 ¦ 568 ¦ 135 ¦¦13567¦ 127 ¦1356 ¦¦ 4 ¦ 2589¦ 589¦¦
¦¦ 13 ¦ 9 ¦ 4 ¦¦ 8 ¦ 12 ¦ 135 ¦¦ 7 ¦ 25 ¦ 6 ¦¦
¦¦ 78 ¦ 568 ¦ 2 ¦¦ 4 ¦ 79 ¦ 569 ¦¦ 58 ¦ 1 ¦ 3 ¦¦
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¦¦ 5 ¦ 12 ¦ 9 ¦¦ 16 ¦ 4 ¦1268 ¦¦ 18 ¦ 3 ¦ 7 ¦¦
¦¦ 4 ¦ 3 ¦ 8 ¦¦ 1579 ¦ 179 ¦ 159 ¦¦ 15 ¦ 6 ¦ 2 ¦¦
¦¦ 6 ¦ 12 ¦ 7 ¦¦ 15 ¦ 3 ¦ 1258 ¦¦ 9 ¦ 4 ¦ 58 ¦¦
========================================

Thanks

Nig

[CathyW]

Not sure from your post if this is the original puzzle with candidates entered or if it's as far as you'd got.

Anyway - look at row 3 - only one place for an 8. Then look at box 9.
All singles after that!