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Regular Samurai #74
http://www.rcbroughton.co.uk/sudoku/forum/viewtopic.php?f=16&t=614		 Page 1 of 1
Author:  tarek [ Sun Sep 20, 2009 10:48 pm ]
Post subject:  Regular Samurai #74
Regular Samurai #74A (Apprentice)
Rating based on required solving techniques:  Hard

Image
74A Line Format:
Code:
8.....54....384...1.4....9..5....9.14.81........5....7.49.1........62....1..5....
...5.6.4.8.1....5.6..73.....6....2.5...625....72...9.......2.......4..2.......6.3
...7.4...............5......4....5.39.5.8.....6....4.8...8.................2.1...
.3..8........62....24.7.......6....24.71......6....8.99.8....3....735...1.....26.
......8.2....7..3......2....74...6.....516....2....3.57..18....4.3....2....2.5.9.


tarek
Author:  Børge [ Mon Sep 21, 2009 7:14 pm ]
Post subject:  Re: Regular Samurai #74
Tarek, thanks for another fun samurai. I also really enjoyed your Regular Samurai #72.

Together we have now "surpassed" Ruud. He "only" managed 73 weeks of Samurai puzzles.
Author:  tarek [ Sat Nov 28, 2009 2:19 pm ]
Post subject:  Re: Regular Samurai #74
This is a suggested walkthrough:
Non single moves:
Code:
8.....54....384...1.4....9..5....9.14.81........5....7.49.1........62....1..5....
...5.6.4.8.1....5.6..73.....6....2.5...625....72...9.......2.......4..2.......6.3
...7.4...............5......4....5.39.5.8.....6....4.8...8.................2.1...
.3..8........62....24.7.......6....24.71......6....8.99.8....3....735...1.....26.
......8.2....7..3......2....74...6.....516....2....3.57..18....4.3....2....2.5.9.

8 forms an intersection in g1b6/g1c8 [g1r79c8]<>8
1 forms an intersection in g3b1/g3r2 [g2r8c1][g3r2c45]<>1
3 forms an intersection in g1b8/g1c6 [g1r456c6]<>3
2 forms an intersection in g1b9/g1r7 [g1r7c1]<>2
6 forms an intersection in g1b2/g1c4 [g1r4c4]<>6
7 forms an intersection in g2r7/g2b9 [g2r9c8]<>7
2 forms an intersection in g3b1/g3r1 [g3r1c5]<>2
47 is a hidden double in g2c9 [g2r5c9]<>8 [g2r7c9]<>1<>8
16 is a hidden double in g3c5 [g3r1c5]<>3 [g3r3c5]<>3
268 is a hidden triple in g1b9 [g1r7c7]<>3 [g1r7c9]<>3 [g1r9c7]<>3<>7
3 forms an intersection in g1c9/g1b3 [g1r3c7]<>3
3 forms an x-wing in g3r3r5/g3c2c6 [g1r78c8][g3r268c6]<>3

Solution:
862791543975384162134625798753246981428179635691538427349817256587962314216453879
297586341831294756645731892463879215918625437572413968389162574756348129124957683
256714389314928756879563124148692573935487612762135498521846937487359261693271845
736984521519362487824571693385697142497128356261453879958216734642735918173849265
937451862261879534845632971574328619389516247126794385792183456453967128618245793
Author:  enxio27 [ Sun Jun 20, 2010 1:53 am ]
Post subject:  Re: Regular Samurai #74
Børge wrote:
Together we have now "surpassed" Ruud. He "only" managed 73 weeks of Samurai puzzles.

And for that, you two are to be congratulated! :applause: :salute:
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