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Clement · Posted: Sun Jul 17, 2011 8:11 am Post subject: Jul 17 VH

W-wing 45 with strong link 5 in col 7 setting r8c4<>4 solves it.

hughwill · Joined: 05 Apr 2010 Posts: 424 Location: Birmingham UK

And a double 459 XY Wing based on R7C6 and R8C7 sorting the C2 45 pair. Easy like a Sunday morning (for the Brits out there old enough to remember...)

kuskey · Joined: 10 Dec 2008 Posts: 141 Location: Pembroke, NH

Another version of a Sunday drive.

1.An x-wing using 5s in c36 setting r2c4 and r4c1<>5 revealing
2.a 139 xyz-wing centered at r2c4 setting r2c5<>1 revealing
3.a 459 xy-wing pivot at r8c4 setting r6c7<>5 for the win.

Marty R. · Posted: Mon Jul 18, 2011 1:15 am Post subject:

I didn't see a solution using just the usual VH moves. The W-Wing on 45 did it. An X-Wing on 5 and a 139 XYZ-Wing weren't enough so I resorted to a chain to get rid of a couple of 1s.