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Substitute Samurai #1.

 
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BÝrge
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Joined: 11 Aug 2007
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PostPosted: Wed Apr 16, 2008 8:50 pm    Post subject: Substitute Samurai #1. Reply with quote

Substitute Samurai #1

This is the best that I can do on a short notice with limited time at my disposal. This puzzle is generated by JSudoku with several additional clues by me.

Rating based on required solving techniques: Extra Hard
My personal rating based on actual solving: Hard

Except for a single non-basic technique this Samurai is pretty straight forward.
Below the code you can find a four step hidden hint regarding the non-basic technique. Select a step to read it.
If you do not know this technique, it is time to learn it. Hint 1 includes a URL.
It is only a tiny tick more difficult to learn than an X-Wing is and often easier to find.



098056700700000003100802000007500008500000300309007002600040200000000000070105006
002360570500000001000501002200004100008000006300600208007040003090000000000709060
200030007000602090006000000060020030800705006040060070000000300050301000300080005
030501000000000050500070300709002005600000200003700001300105000400000003067048500
300906050000000000005080002600400807003000009400009200000803006800000005006710380



Hint 1: The non-basic technique is a 2-String Kite


Hint 2: There is a 2-String Kite for 3.


Hint 3: There is a 2-String Kite for 3 in grid 5 (the bottom right one).


Hint 4: Pencil 3 can be eleiminated in g5:r2c5. Here a picture showing the 2-String Kite
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Hilsener i fra vikingen viking BÝrge


Last edited by BÝrge on Fri May 16, 2008 6:22 pm; edited 7 times in total
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Jean-Christophe
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PostPosted: Thu Apr 17, 2008 7:08 am    Post subject: Reply with quote

Alternate hint 1: There is also a skyscraper on same digit and location, which is probably easier to spot.
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BÝrge
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PostPosted: Thu Apr 17, 2008 10:48 am    Post subject: Reply with quote

JC, I beg to differ.
For someone unfamiliar with these techniques, I think that it in this special case it is more difficult to reason out the logic behind your alternative.
For the records, here the complete picture.


Last edited by BÝrge on Fri May 16, 2008 6:23 pm; edited 2 times in total
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Jean-Christophe
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PostPosted: Thu Apr 17, 2008 11:37 am    Post subject: Reply with quote

Well, the logic is exactly the same, but personally, I find it easier to spot the pattern I mentioned in particular since: it's confined in two adjacent rows and is almost an X-Wing

Note: The skyscraper eliminates 3 from both r2c5 and r5c4 at once
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BÝrge
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PostPosted: Thu Apr 17, 2008 12:21 pm    Post subject: Reply with quote

What I meant by logic is the reasoning behind the elimination(s). As with many other things in life, personal taste factors in.
I surrender to your logical eliminations Embarassed (sure you not have green blood?) and have updated the complete picture.
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