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Submitted by: michaljn007

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Today's puzzle has some rather interesting moves available immediately following the standard easy stuff - of which there is but little!

I should have a blog page up and running regarding at least the beginning of today's puzzle shortly.

A link to the new blog page will appear at the top of the right column of this page, directly under "Check out the Sudoku Blog".
01/Jul/10 12:19 AM
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Oh! What a pretty color!
01/Jul/10 12:38 AM
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time for Steve, rwm, sotir to lock and load.
I'll be surprised if it takes less than seven gnarly steps.
01/Jul/10 1:37 AM
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maen all!...so that's what munchkins wear in their hats...the aces killed me on this one.
01/Jul/10 2:02 AM
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Have a great day/night, everyone, and celebrate well tomorrow, fellow Canuks!
01/Jul/10 3:39 AM
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There is a backdoor of a5=4 in this puzzle (basic techniques only after that to UP=81) - but I can find no exclusions to justify this. Best regards, Neil
01/Jul/10 4:15 PM
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Hmm. The only dent in the armor of this problem I can make (after basic UP 27) is the following.

The 6 of the top left box goes into either c8 or b9.
The two options share as a common quick consequence d5=2. The logic goes thusly:

If c8=6, then b4=g6=6, h6=g2=f5=1, so d5=2.
More...
01/Jul/10 5:07 PM
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A slight change from the path I blogged in the last step: AAIC's used in steps 4,5,6.
1) Start 22 UP 26 LC(9)ab2 => g2<>9; NT(126)def5 => ai5,f6,ef4<>126UP 27
2) (83=1)hi6 - g6 = g2 - f2 = HP(16-62)f59 = FSF(2)cfi237i9- (2)g7 = (389)g78h8 => g46i89<>8, h9<>3; More...
01/Jul/10 10:14 PM
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Acronym guide:
LC - Locked Candidate
NT - Naked Triple
HP - Hidden Pair
FSF - Finned Swordfish
WWing - W Wing: (2)cells (ab), strong link (b) between them => a = a in the cells.
XYZ Chain: A kraken in which one of the (3) items considered directly forbids that which an AIC More...
01/Jul/10 10:21 PM
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1)Start at 22,SSTS to UP =27
2)Loop:(6)b4=b9-f9=(6-1)f5=f2-g2=(1-6)g6=(6)g4,
=>e9<>6,f5=16,e2<>1,g6=16,c4< ;>6
3)(2=1)d5-d8=(1-6)e8=(6)e5,=>e5<>2.UP=28
4)Kraken row More...
01/Jul/10 10:38 PM
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Horrendously –possibly illegally –long -gnarly? -first step, but it does it (I think?):

1. STs to 27.

2. G6=6 or ghi6=138. If ghi6=138, i5=4, f6=5, g4=c6=e8=f5=6, f2=h1=1, h6=3, h3=4, d8=1, d5=e1=2, h8=9, e2=4, a2=9, a8=c4=4, b4=5, b2=3, g2=2, and there are no 2s in row 7.
So More...
02/Jul/10 2:49 PM
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Alfred has pointed out a mistake, so, although the first step may be invalidly long, I may as well make it technically correct:

After e1=2, I should have included f3=8 & a1=8, which is needed to force the a8=4.

Regards to all. It's nice to see all the new and old names.


02/Jul/10 11:01 PM
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sotir: it takes about 4 more kraken. no short path exists outside of Steve's proprietary methods.
05/Jul/10 8:44 AM
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SE=8.4
10/Sep/10 10:56 PM
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