The New Sudoku Players' Forum

[RyanStorm]

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[champagne]

I don't catch your point.

My understanding is that you have twice a single "2" in one house; this is not possible in a valid sudoku.
Second point, if you have a single "2" in the first house, it can be assigned.

[RyanStorm]

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[RyanStorm]

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[m_b_metcalf]

Basically I am extremely stuck, I have 2 samurai sudokus I can't solve that I have had for awhile.

Post them in the usual 5-line format in 'Sudoku variants' and I'll have a look.

Regards,

Mike Metcalf

[JasonLion]

There is no parallel logic for singles. The Unique Rectangle logic depends on a two digit pattern, for which there is no one digit equivalent.

[RyanStorm]

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[RyanStorm]

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[Pat]

In 2 rows, I have two 9's, in one house, and another 2 in the house above. So they are the only 9's in that row, and they are in same column in two separate houses. I swear this lets me erase any other 9's in the column they are in.

seems you've discovered the X-wing