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[quote="TomC"]r6c5 <> 1 as then two 9's in r56c1[/quote]

Correct. This means the puzzle is "hard", not "very hard".

xyz wing 258 and then xy wing 789

xy wing 569 pinching col 3 row 9 on 6;
the x wing;
xyz wing 568 pinching col 2 row 5 on 6

Clement's post is not to do with the 21 Jan VH.

Using only classic wings, I found 3 successive xy wings with the same 3 digits, 269!

The fulcrums are 29 in r6c8, 69 in r7c5 and finally 69 in r5c ...

[quote="Earl"]345xywing@R5C6, -3R6C9

Early Earl[/quote]

But first you need x-wing 4 (rows 6 and 9) to eliminate 4 from row 5 col 9

3 successive classic steps: xy wing 346, x wing 3, xy wing 147

Wonderful! A four step classic.

3 classic steps: x wing3, xy wing 367, xy wing 246

x wing 3 columns 3 and 7 eliminates three 3s from row 5
and sets up an
xy wing 146 pinching out two 1s.
Row 5 column 8 must be 1.

x wing 7 (see rows 3 and 7) followed by
xy wing 267

3 classic steps: x wing 9, xy wing 458, xy wing 258

After the 3 x-wing there's an xy wing 139. Row 6 col 9 is not 1.

Alternative second step: xyz wing 579

238 xy wing @ R2C5, -3R3C5

Using only traditional wings (and not permitting myself the UR)
I found I needed four successive xy wings!

Classic two steps:
xy wing 237
and later xy wing 138

You did not mess up.
This puzzle is "hard", not "very hard".

xy wing 156 pivot row 7 column 9: row 1 col 2 is not 5
pair 23 column 2: row 2's 2 must be in column 8.

x wing 2 (columns 3 and 6) and then
xy wing 459 fulcrum row 2 col 5

xy wing 468 fulcrum row 8 col 5 sets row 8 col 4 = 9 and then
xyz wing 468 fulcrum row 8 col 2 sets row 9's 6 at col 5