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 Post subject: Regular Samurai #115
PostPosted: Fri Oct 29, 2010 9:11 am 
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Regular
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Joined: Tue Oct 26, 2010 6:08 am
Posts: 7
Image

Required solving techniques : Hidden Single.

Gattai-5 No.001:
Code:
005100007070030000200006000600000200030000010002000005000500000000070000300009000
500009800000050020000200003003000007020000060900000500000008000000010000000300002
000206000000080000000009000800000604040000050107000002000500000000030000000802000
300001000000050000000800000002000005080000020600000900200006000030020000007900008
000500009000080000000004000700000300090000040003000005000800001000010070200003400


http://puzzle.gr.jp/show/English/NPProblems/Image/Gattai-5


Last edited by ton on Tue Nov 02, 2010 7:26 am, edited 1 time in total.

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 Post subject: Re: Regular Samurai #115
PostPosted: Fri Oct 29, 2010 2:30 pm 
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Grand Master
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Joined: Mon Apr 21, 2008 10:32 am
Posts: 868
Ton,
thanks for the Samurai.

Apprentice Level puzzles in the Regular Samurai series are supposed to be harder than Regular Samurai #115.
They are supposed to be of category Tough or Hard in the following Table:
Code:
Rating               Techniques required
======               ===================

Very Easy            Naked Singles only.

Easy                 Naked and Hidden Singles only.

Moderate             Easier techniques + Intersections   aka.   Block/Block Interactions   aka.   Locked Candidates
                                       + Hidden Extra Groups + Twin Nonets

Tough                Easier techniques + Naked and/or Hidden Pairs.

Hard                 Easier techniques + Naked and/or Hidden Triplets/Quads + X-Wing.

Very Hard            Easier techniques + Swordfish, Jellyfish and/or Squirmbag.

Extra Hard           Easier techniques + Skyscraper + Two String Kite + Remote Pairs + Empty Rectangle + Turbot Fish + Uniqueness Test 1.

Super Hard           Easier techniques + Finned Fish + Grouped Fish + Wings + Uniqueness Test 2.

Ultra Hard           Easier techniques + Chains + Uniqueness Test 3 trough 6.

Nightmare            Easier techniques + any other techniques except Pure Guessing and Brute Force.

Hellish Nightmare    Easier techniques + Pure Guessing and Brute Force.

Clickable link to the ratings explained post


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 Post subject: Re: Regular Samurai #115
PostPosted: Mon Nov 01, 2010 7:51 am 
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Regular
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Joined: Tue Oct 26, 2010 6:08 am
Posts: 7
Børge wrote:
Apprentice Level puzzles in the Regular Samurai series are supposed to be harder than Regular Samurai #115.
They are supposed to be of category Tough or Hard in the following Table:


The level of Regular Samurai #115 is Novice.
Rating based on required solving techniques: Easy

The rating of Regular Samurai #115 is Hard in Japan.



Rating and Techniques required of Standard Sudoku in Japan.
Code:
Rating               Techniques required
======               ===================

Very Easy            Full House + Hidden Singles(box only).

Easy                 Full House + Hidden Singles(box only) ( + Locked Candidates ).

Moderate             Hidden Singles ( + Locked Candidates ).

Hard                 Hidden and Naked Singles + Locked Candidates ( + Hidden Pairs ).

Very Hard            Easier techniques + Hidden and/or Naked Pairs ( + Naked and/or Hidden Triplets/Quads ).

...


Rating and Techniques required of Gattai in Japan.
Code:
Rating               Techniques required
======               ===================

Very Easy            Full House + Hidden Singles(box only).

Easy                 Full House + Hidden Singles(box only).

Moderate             Full House + Hidden Singles(box only).

Hard                 Full House + Hidden Singles(box) ( + Hidden Singles(line) ).

...


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 Post subject: Re: Regular Samurai #115
PostPosted: Tue Nov 02, 2010 9:50 pm 
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Grand Master
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Joined: Thu Apr 24, 2008 4:27 pm
Posts: 791
ton wrote:
The rating of Regular Samurai #115 is Hard in Japan.

Rating and Techniques required of Gattai in Japan.

The puzzles posted here need to follow the standard rating system that Børge described, not use some other rating system. The point is, ton, that the puzzle you posted, while very much appreciated, doesn't match the level of difficulty expected for this forum.


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 Post subject: Re: Regular Samurai #115
PostPosted: Tue Nov 30, 2010 4:44 am 
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Grand Master
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Joined: Thu Apr 24, 2008 4:27 pm
Posts: 791
I finished this puzzle today. While the solving path wasn't as quick as I'd expected based on Børge's feedback, once I made the first pass through the four outer grids, the puzzle quickly fell apart into singles.

I agree with Børge--this puzzle doesn't qualify for Apprentice level. However, after beating my head against tarek's Bank Holiday 0808 Kazaguruma #3 (AGAIN, for the 3rd or 4th time), I was ready for an easier puzzle.


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