SudokuSolver Forum

A forum for Sudoku enthusiasts to share puzzles, techniques and software
It is currently Tue Apr 23, 2024 12:36 pm

View unanswered posts | View active topics


Board index » Puzzles and Solutions » Samurai

All times are UTC




Post new topic Reply to topic  Page 1 of 1
  [ 2 posts ] 
  Print view Previous topic | Next topic 
Author Message
tarek
 Post subject: Regular Samurai #78
PostPosted: Wed Oct 21, 2009 10:50 pm 
Offline
Grand Master
Grand Master
User avatar

Joined: Tue Aug 05, 2008 11:43 am
Posts: 251
Regular Samurai #78A (Apprentice)
Rating based on required solving techniques:  Hard

Image
78A Line Format:
Code:
....6..9.8.1...7.....38....7....84.2...61....1.2.....9.8...3....23.........9.6...
451.........6.......9...7.81....6.5....9.7.8..68....2....8...........4.1...7.2...
............3.5........7...84..3...........3475..1.........1......9.6............
...1.4....89.......3...5...4.6.....9...95....7....61.3...31....8.5...2......7..4.
...9.2.........1.5...5......46....1....1.9.4.1....8.2...9...6.8...2.....714......


tarek
Top
 Profile  
Reply with quote  
tarek
 Post subject: Re: Regular Samurai #78
PostPosted: Sat Nov 28, 2009 2:23 pm 
Offline
Grand Master
Grand Master
User avatar

Joined: Tue Aug 05, 2008 11:43 am
Posts: 251
This is a suggested walkthrough:
Non single moves:
Code:
....6..9.8.1...7.....38....7....84.2...61....1.2.....9.8...3....23.........9.6...
451.........6.......9...7.81....6.5....9.7.8..68....2....8...........4.1...7.2...
............3.5........7...84..3...........3475..1.........1......9.6............
...1.4....89.......3...5...4.6.....9...95....7....61.3...31....8.5...2......7..4.
...9.2.........1.5...5......46....1....1.9.4.1....8.2...9...6.8...2.....714......

5 forms an intersection in g3b9/g3r7 [g3r7c345]<>5
9 forms an intersection in g3c9/g3b6 [g3r46c8][g3r56c7]<>9
4 forms an intersection in g5c6/g5b2 [g5r2c45][g5r3c5]<>4
6 forms an intersection in g5b1/g5r1 [g5r1c89]<>6
5 forms an intersection in g2b3/g2r2 [g2r2c56]<>5
5 forms an intersection in g2r8/g2b8 [g2r7c56]<>5
9 forms an intersection in g2b2/g2r2 [g2r2c89]<>9
2 forms an intersection in g2b9/g2r7 [g2r7c1]<>2
3 forms an intersection in g2b8/g2r8 [g2r8c8]<>3
4 forms an intersection in g2b6/g2c9 [g2r2c9]<>4
7 forms an intersection in g2b6/g2c9 [g2r7c9]<>7
6 forms an intersection in g3b3/g3c9 [g3r4c9]<>6
3 forms an intersection in g5b6/g5c9 [g5r9c9]<>3
5 forms an intersection in g5b6/g5c7 [g5r9c7]<>5
68 is a hidden double in g5r8 [g5r8c1]<>5 [g5r8c2]<>3<>5
78 is a hidden double in g2c2 [g2r2c2]<>2<>3
14 is a hidden double in g2c8 [g2r2c8]<>3 [g2r3c8]<>3
149 is a hidden triple in g2r2 [g2r2c5]<>2<>3 [g2r2c6]<>3
2 forms an x-wing in g2c2c5/g2r3r5 [g2r3c4][g2r5c13]<>2
28 is a hidden double in g2c1 [g2r2c1]<>3<>7 [g2r8c1]<>7

Solution:
374261895861459723295387146736598412948612357152734689689123574423875961517946238
451378692872691543639425718194286357325947186768153924913864275287539461546712839
574862913961345287238197546846739152129658734753214869392481675415976328687523491
567184392289763415134295687456831729321957864798426153942318576875649231613572948
675912384328674195491583267946725813582139746137468529259341678863297451714856932
Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 2 posts ] 

Board index » Puzzles and Solutions » Samurai

All times are UTC


Who is online

Users browsing this forum: No registered users and 7 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group