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tarek
 Post subject: Regular Samurai #22
PostPosted: Mon Sep 22, 2008 5:50 am 
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Regular Samurai #22A (Apprentice)
Rating based on required solving techniques:  Very Hard

Image
22A Line Format:
Code:
...9.7...6.3............15....39....89....6......2.7.841........6.7...8......3...
51.......6...73.......9.1....6....7...43.6........4.12.9..3.......2....5......8..
.......9..8..........9.6....3..1....1.6..........7.5.4...3.................2.....
.........3.9..........12.....4.....3....68...7.1.....5.9...7...61..........4..73.
...7...8.............8.9..66.4.1.........5..73.7............4.8.9.53.....38...5..
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tarek
 Post subject: Re: Regular Samurai #22
PostPosted: Tue Sep 23, 2008 8:43 am 
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This is probably the most difficult apprentice to date ....

Several sub grids are unsolved when reaching non single moves.

Remember that "X" marks the spot :cheesey:
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Børge
 Post subject: Re: Regular Samurai #22
PostPosted: Tue Sep 23, 2008 1:43 pm 
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tarek wrote:
This is probably the most difficult apprentice to date ....
I agree with that.
tarek wrote:
Several sub grids are unsolved when reaching non single moves.
I would say that all sub grids are unsolved when reaching non single moves.
tarek wrote:
Remember that "X" marks the spot :cheesey:
Thanks for this invaluable hint. Otherwise solving this puzzle would probably have taken me days instead of just half an hour. ;) 8-)



Here a mini-mini Walktrough:
Hidden Text:
To solve this one I needed one X-Wing on 2 in g3:r15c57 (green cells). Then the Samurai solves with N/H-Singles and Intersections.

Image



At this point there is also an X-Wing on 5 in g3:r24c34
and a Two-String Kite on 2 in g2:(r9+c7)
but none of them yields any breakthrough eliminations.

X-Wing on 5 in g3:r24c34
Image

Two-String Kite on 2 in g2:(r9+c7)
Image

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