dailysudoku.com

Victor · Joined: 29 Sep 2005 Posts: 207 Location: NI

I've been doing Daily S VHs & Brainbashers SHs for ages, but increasingly sporadically. (Yes, you can occasionally miss a pointed pair or something, but mostly they're pretty easy.) So I've been expanding my range recently, mostly by tracking posted puzzles here: many thanks for helpful comments. I partcularly like the single-digit techniques, like continuing say an XY-wing with colouring, or bouncing round the board with ERs.

Anyway, I'm now managing to do some of my own. Here's one that took me quite a long time - no doubt some people will find a fast way through. My solution path included XY-wings extended by colouring and finned X-wings. It's a Menneske 6333924 SH. After basics:

ravel · Joined: 21 Apr 2006 Posts: 536

There is an x-wing in 1, which gives you a w-wing in 57, then coloring in 7 solves the puzzle.

Victor · Joined: 29 Sep 2005 Posts: 207 Location: NI

Thanks. Impressively fast! (Took me hours & a long-winded path because I missed the W-wing.) But don't you need a small XY-wing to finsih off?

nataraj · Posted: Mon Dec 10, 2007 6:32 pm Post subject:

my way - step by step:

x-wing <1> remove 1 from r1c8, r2c5, r8c5
multi coloring <7> remove 7 from r1c6
xy-wings remove 7 from r4c7 (78-85-57), 1 from r8c7 (15-58-81)
multi-coloring removes 5 from r2c9
w-wing "57" r1c8 ... r4c1
multi-coloring: remove 5 from r2c1, r3c5 and remove 7 from r2c4,
and again coloring removes 7 from r8c6
2 xy-wings 15-57-71 pivot r3c2

guess I must have taken the looooooooooooong way!