dailysudoku.com

This one is a challenge for pencil & paper solvers …
+-------+-------+-------+
| 7 . . | . . 5 | 2 . . |
| 2 . . | . 1 . | . . 5 |
| . . 8 | 6 . . | . 3 . |
+-------+-------+-------+
| . ...

Question: Will this only work when the BUG cells see each other, or can it be applied in any case?

Thanks in advance for any enlightenment.
immpy,

The process is to identify the candidates whi ...

After basics (see dongrave's grid above), this puzzle is a BUG+2.

In a BUG, every unsolved cell has two candidates, and each candidate occurs twice in each house (row, column, or box). A BUG does n ...

Well,

You know how I'll solve it. After basics:

+----------------+----------------+----------------+
| 8 5 4 | 6 23 7 | 239 239 1 |
| 1 9 7 | 23 4 8 | 6 ...

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

immpy,

Thank you for making my New Year!

First, let me say you are correct. Given the Hidden Rectangle elimination, you have pointed out the links that make the elimination of 3 in r5c3.

I ha ...

dongrave and immpy,

Thank you very much for the positive comments. Greatly appreciated.

Keith

I thought I might mention, I do a lot of puzzles from inexpensive books I find at the local "dollar" stores.

There is one series I will gladly recommend, by Papp publishing in Canada. To ...

Here are my best wishes to all for great success in the New Year, however you might choose to measure that.

For myself, I just wish to continue to find cause to be grateful.

Best wishes,

Keit ...

ZeroAssoluto is correct, but I have a way of coming at these things that others may find useful.

After basics:

+----------------+----------------+----------------+
| 7 59 2 | 1 4 ...

Here is another in my "I told you so" series. Enjoy!

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

After basics:

+----------------+----------------+----------------+
| 7 9 256 | 35aB 4 8 | 256 1 2356 |
| 8 15 125 | 6 39A 3-5-9| 4 7 235 |
| 56 4 3 | ...

It's been a long time since I posted one:

Puzzle: New Puzzle
+-------+-------+-------+
| 7 . . | . . 8 | . . . |
| . . . | 6 . . | 4 7 . |
| . . 3 | 1 2 . | . 8 . |
+-------+-------+--- ...

All,

I am sorry to let you know that Marty Robinson passed away on the evening of March 16, 2020 [Typo corrected]. He lived in Rochester, NY, USA.

Marty will be remembered by us as the long-time ...

This is what it is.

Try Helmut's site: http://www.saueregger.at/sudoku/

Keith

I have a son! I'll ask him about copying web sites.

Keith

Are you able to ban/delete the previously approved subscribers who clearly have no interest in the forum other than google hits on their Web sites?

It's possible, but difficult. Also, you have no ...

enxio27,

I generally agree, but the concerns over this site go back well over a decade. Sam Griffiths-Jones is simply not interested in the discussion list. He has told me that.

It was a battle ...

That means for all practical purposes that this forum has no admin or moderator, right?
But Sam - the owner - will take care of that, won't he?

Helmut (Nataraj)

Helmut, I am an Administrator ...

Marty tells me he is no longer doing puzzles, and so is not participating in the Forum. I'll miss him. He has been the mainstay here for many years.
That's sad to read. Crying or Very sad

Helmut does not wa ...