The New Sudoku Players' Forum

[tonyjer]

Hi Everyone

Don't want the solution to this (already have it as it is on my hand held gizmo!)

Can someone give me just one or two prompts. I have studied this laboriously for hours (when I should have been working!) to no avail. I can't find naked/hidden doubles/triples/quads. Not sure about Xwing/swordfish etc and certainly havent considered forced chains or differential calculus!

What bugs me is that all these so called "level 3" games on my hand held seem to be at this level. Is this the norm?

Any help would be greatly appreciated.

Cheers

Antonio, Anna y Eduardo Felipe

15 3 1457 157 6 2 147 9 8
6 12478 12478 9 78 178 147 3 5
9 1578 1578 4 3578 13578 2 6 17
4 2589 2358 23568 1 3568 679 28 679
7 2589 258 2568 4 568 69 1 3
138 128 6 2378 2378 9 5 28 4
158 1478 9 123678 2378 134678 168 5 126
2 1458 13458 13568 3589 134568 1689 7 169
158 6 1578 12578 25789 1578 3 4 129

[emm]

Hi A, A & E - sorry you wasted time on this puzzle when you should have been working! The solver says it's invalid with multiple solutions. Check the original grid to make sure you got it right.

[tonyjer]

Made a slight mistake in the grid.

G1 should be 1/3/8 of course.

Does this affect your advice?

A, A y Eduardo Felipe

[emm]

No. Can you post the original puzzle?

[QBasicMac]

If you are lucky, when you go to your original puzzle you will find that the chocolate smudges cover this:
Row 2 col 3 = 8
Row 3 col 5 = 3

If so, you have an easy puzzle.

I looked at the 237 solutions and it seems that those two numbers reduce the solutions to 1 the fastest.

(Keep your puzzles clean)

Mac

[tonyjer]

Thanks again.

Will keep digging

Antonio, Anna y Eduardo Felipe