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[Clement]

Three XY-Wings:-
XY-Wing 57 37 35 pivoted in r1c2 sets r89c3<>5 followed by
XY-wing 35 57 37 pivoted in r9c2 sets r1c1<>3 followed by
XY-Wing 13 15 35 pivoted in r9c8 sets r6c9<>3.
Any one with a single steper?

[prakash]

Two Sashimi X wing (skyscraper) in 3 and in 5 solves the puzzle. Still looking for the single stepper.
-PJ

[kragzy]

I must be missing something here. I saw the first two XY wings mentioned by Clement, which gave me the following grid.

[code]
+--------------+----------+------------------+
| 17 37 6 | 89 24 5 | 1349 1237 134789 |
| 157 9 8 | 6 24 3 | 145 127 147 |
| 2 4 35 | 89 7 1 | 359 6 389 |
+--------------+----------+------------------+
| 579 1 2 | 4 3 8 | 6 57 579 |
| 4 8 39 | 5 6 7 | 139 13 2 |
| 6 357 357 | 2 1 9 | 8 4 357 |
+--------------+----------+------------------+
| 39 6 1349 | 7 5 2 | 134 8 134 |
| 35 2 34 | 1 8 46 | 7 9 3456 |
| 8 57 147 | 3 9 46 | 2 15 1456 |
+--------------+----------+------------------+

I presume the third XY wing depends on R8C9 being 35. How do I get rid of the 4 and 6? I'm sure it's obvious to all (but me!).

Thanks

[kragzy]

Sorry, I'll try copying the grid again.

[Marty R.]

[kragzy]

Ahhhhhhhhhhhhhhhhhhhhhhh.

Thanks Marty

[cgordon]

For a wingless two-step solution, I used a Type 4 UR (89) and an ER on 5.