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tarek
 Post subject: Regular Samurai #72
PostPosted: Sat Sep 05, 2009 9:17 am 
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Regular Samurai #72A (Apprentice)
Rating based on required solving techniques:  Hard

Image
72A Line Format:
Code:
...2...7.4.1...3.....1.4.5...6.3.......8....17.3...8.9.7..5....39........2...8...
.2...8.....9...8.2.3.7.9.......1.7..8....4...5.2...4.6....3..9........45...6...7.
.............5........6.....3.....6...6.4.7..1.......8...7.5......8.4......9.6...
...1..........9....8.3.....4...8...3..1..5...8.3...4.7...5.8.4...4...12......1.3.
.....5......2..........4.9.9...6...5...7..8..4.3...1.7.5.8.6....91...2...6.9.....


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tarek
 Post subject: Re: Regular Samurai #72
PostPosted: Sat Nov 28, 2009 2:17 pm 
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Joined: Tue Aug 05, 2008 11:43 am
Posts: 251
This is a suggested walkthrough:
Non single moves:
Code:
...2...7.4.1...3.....1.4.5...6.3.......8....17.3...8.9.7..5....39........2...8...
.2...8.....9...8.2.3.7.9.......1.7..8....4...5.2...4.6....3..9........45...6...7.
.............5........6.....3.....6...6.4.7..1.......8...7.5......8.4......9.6...
...1..........9....8.3.....4...8...3..1..5...8.3...4.7...5.8.4...4...12......1.3.
.....5......2..........4.9.9...6...5...7..8..4.3...1.7.5.8.6....91...2...6.9.....

8 forms an intersection in g3b1/g3r2 [g2r8c2][g3r2c6]<>8
6 forms an intersection in g1b9/g1c7 [g1r3c7]<>6
3 forms an intersection in g2b3/g2c8 [g2r456c8]<>3
3 forms an intersection in g2r6/g2b5 [g2r4c46][g2r5c4]<>3
6 forms an intersection in g2b7/g2c3 [g2r45c3]<>6
2 forms an intersection in g3b3/g3c7 [g3r46c7]<>2
1 forms an intersection in g1b7/g1c1 [g1r4c1]<>1
5 forms an intersection in g1b2/g1r2 [g1r2c2]<>5
6 forms an intersection in g1b7/g1c1 [g1r1c1]<>6
1 forms an intersection in g2c1/g2b1 [g2r2c2]<>1
2 forms an intersection in g2b9/g2c7 [g2r5c7]<>2
5 forms an intersection in g2b2/g2r2 [g2r2c8]<>5
6 forms an intersection in g2b9/g2c7 [g2r3c7]<>6
7 forms an intersection in g2b7/g2c3 [g2r5c3]<>7
9 forms an intersection in g3b1/g3c2 [g3r5c2]<>9
67 is a hidden double in g2r5 [g2r5c2]<>1<>9 [g2r5c5]<>5<>9
67 is a hidden double in g2c3 [g2r7c3]<>1<>4 [g2r8c3]<>1<>3
46 is a hidden double in g1c7 [g1r8c7]<>7
68 is a naked double in g1c5 [g1r2c4]<>6 [g1r2c5]<>6<>8 [g1r2c6]<>6 [g1r5c5]<>6 [g1r8c5]<>6 [g1r9c5]<>6
(x-wing g2c3c9/g2r5r9 [g2r5c78][g2r9c67]<>1 not needed)
258 is a hidden triple in g2r4 [g2r4c4]<>9 [g2r4c6]<>6
 
Solution:
589263174461975382237184956816739245952846731743521869178452693395617428624398517
125348967749156832638729154364512789871964523592873416257431698916287345483695271
693481257428357916517269483732198564986543721145672398869735142351824679274916835
235174869647829351189356274426987513971435682853612497312598746594763128768241935
142695378679238541835174692987361425516742839423589167754826913391457286268913754
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