The New Sudoku Players' Forum

[skibum]

This is a puzzle from a pappocom computer program. The program tells me when entries are incorrect so I know the entries are correct so far. I've looked at it for a very long time; what am I not seeing?

Code: Select all

249-1-5-8-27-3-467-247-2469
6-23-349-49-257-1-8-2457-249
249-7-8-49-25-6-345-1-2349
1-9-6-7-8-4-2-3-5
8-5-2-6-3-9-47-47-1
3-4-7-5-1-2-9-6-8
7-2368-34-1-46-58-3456-9-2346
459-368-1-2-469-58-3456-458-7
2459-268-49-3-469-7-1-2458-246

Thank you, Donetta

[Carcul]

what am I not seeing?

The naked quad in row 2. Hope that help.

Regards, Carcul

[skibum]

Ah, yes, that did the trick! Thank you very much!

[tarek]

The Quad in Row 2 has a Hidden double counterpart.........
Beware of attacking X-wings

for a bonus point, can you spot the swordfish ?

tarek