dailysudoku.com

Hi Hugh! I noticed there are LC's on 3's in col 2 (-3r8c1,r9c3) which looks like it solves it!

Thanks, very true. Put it down to increasing senility on my part!

Am I missing something or can this only be solved by either of the (admittedly straightforward) XY Wings?

126 on R3C2,R5C2,R5C6
136 on R1C3,R3C2,R6C3

+-------------+-----------+-------+
| 12 ...

No the creator is still there and has fixed it...
Marty will be beaming down on us.

I have tried to contact the moderator before and no replies. I think Martys legacy is gone

Has the site gone down?

No new puzzles since April 30th

I can't get a puzzle here, yesterday or today- error message pops up.

Anyone else got the problem?

Never away.
Just quiet!

Following the X wing on <2> in c19, then r8c6 = <14> this creates a <14> pair in box 8 and sets r2c4=1 and solves the puzzle

Yes true. I was put off by the reluctance of the 'Grad ...

+-------------+-----------------+-------------+
| 9 67 1 | 25 478 2458 | 48 26 3 |
| 8 5 4 | 12 3 6 | 12 9 7 |
| 3 67 2 | 9 1478 148 | 48 16 5 |
+- ...

Surprised no posts. This one was one of the most complicated VHs I've come across!

Yes the X wing on 1s r18 -1r6c3 solves it in one.

As does the UR on 47 r46 r6c1=1

It wasn't VH

It happens from time to time on this algorithm.

I've though about looking at examples to see what the common factor is, but I have decided that life is too short.

I make it that the first xy wing takes you to here:

+--------+-------------+----------+
| 7 1 5 | 4 6 9 | 2 8 3 |
| 9 4 2 | 5 38 38 | 1 7 6 |
| 3 8 6 | 2 7 1 | 59 59 4 ...

Sad to hear of this.

A true gentleman (the finest praise we Brits can offer!).

Not VH.

Again

Yep. 2 in a row.

+--------------+-----------+------------------+
| 6 5 9 | 4 2 8 | 1 3 7 |
| 3 2 8 | 1 5 7 | 469 69 46 |
| 4 1 7 | 9 6 3 | 58 2 58 |
+- ...

After 2 VHs which were solvable by basics, I think we've got one
that is a 4 stepper needing all 3 VH techniques!

+-------------+--------------+----------+
| 8 12 59 | 3 25 7 | 4 1 ...

+---------------+------------------+---------------+
| 2578 6 2578 | 4578 24578 9 | 128 1235 138 |
| 2578 9 3 | 1 2578 578 | 28 6 4 |
| 258 4 1 | 58 6 3 | ...

Instead of W wing in Gianni's solution, you can substitute 469 XYZ-wing
pivot r9c2 relieving r7c2 of its 9. Then the 9 X-wing appears to crack the
puzzle.

+---------------+----------+---------------+
| 7 14 149 | 5 2 8 | 16 3 469 |
| 2 3 14 | 9 6 7 | 5 148 48 |
| 8 6 5 | 1 4 3 | 27 27 279 |
+------------- ...