SudokuSolver Forum

A forum for Sudoku enthusiasts to share puzzles, techniques and software
It is currently Sat Apr 27, 2024 7:40 pm

View unanswered posts | View active topics


Board index » Puzzles and Solutions » Clueless Explosions

All times are UTC




Post new topic Reply to topic  Page 1 of 1
  [ 5 posts ] 
  Print view Previous topic | Next topic 
Author Message
Jean-Christophe
 Post subject: JC's Clueless Explosion
PostPosted: Fri Jun 13, 2008 8:05 pm 
Offline
Expert
Expert

Joined: Sun Apr 27, 2008 10:44 am
Posts: 102
Location: Belgium
Here is A CE, not really hard, which has a unique solution. Guess which technique(s) can be used to solve it?
Attachment:
ClueslessExplosion1.png
ClueslessExplosion1.png [ 36.95 KiB | Viewed 10651 times ]

Code:
19.............1.3...64.........4..99.1.........2.8.....7......6.2..5.......8.61.
..7..5.........8....8..9...39.2...........2.1.7..9.6..2......144.6..........5..2.
.2.39....4.......6.1....4.5..8.3..5.7.3..........27.8..4.....7.......9.3..67.9...
5..6.8...........56.....4......34.2.1.....3.......2.9..6..7..........8.3.93......
......7..1.....6.3.5.9.....6.5.........4.7.........1.4.....2.9.5.1.....7..8......
......97.9.3..........5..1..8.5.......1.....3.5.73......7.....12...........6.4..9
...8.16..4.9.......8.....3..7.98..........5.8.5..1.2..7.5....1.9.......3....43.5.
.7..9..........1.331......5..7.1..3.9.2...........6.72...8..6....6.........4..3..
.74.2.......8..1.5......2.....3.8.........3.43..1.........86...2.5.............21

Solution: 
+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| 1 9 8 | 3 5 7 | 4 2 6 | 6 2 7 | 8 4 5 | 1 3 9 | 6 2 5 | 3 9 4 | 8 1 7 |
| 7 6 4 | 8 2 9 | 1 5 3 | 9 4 3 | 6 1 2 | 8 7 5 | 4 3 7 | 1 8 5 | 2 9 6 |
| 2 5 3 | 6 4 1 | 9 7 8 | 1 5 8 | 3 7 9 | 4 6 2 | 8 1 9 | 6 7 2 | 4 3 5 |
+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| 8 2 5 | 1 3 4 | 7 6 9 | 3 9 1 | 2 6 4 | 5 8 7 | 2 9 8 | 4 3 6 | 7 5 1 |
| 9 3 1 | 5 7 6 | 8 4 2 | 5 6 4 | 7 8 3 | 2 9 1 | 7 5 3 | 9 1 8 | 6 2 4 |
| 4 7 6 | 2 9 8 | 5 3 1 | 8 7 2 | 5 9 1 | 6 4 3 | 1 6 4 | 5 2 7 | 3 8 9 |
+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| 5 1 7 | 9 6 3 | 2 8 4 | 2 8 5 | 9 3 6 | 7 1 4 | 9 4 1 | 2 6 3 | 5 7 8 |
| 6 8 2 | 4 1 5 | 3 9 7 | 4 3 6 | 1 2 7 | 9 5 8 | 5 7 2 | 8 4 1 | 9 6 3 |
| 3 4 9 | 7 8 2 | 6 1 5 | 7 1 9 | 4 5 8 | 3 2 6 | 3 8 6 | 7 5 9 | 1 4 2 |
+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| 5 3 4 | 6 2 8 | 9 7 1 | 2 8 4 | 6 3 1 | 7 5 9 | 5 2 8 | 4 1 3 | 9 7 6 |
| 7 2 8 | 4 9 1 | 6 3 5 | 1 7 9 | 2 5 8 | 6 4 3 | 9 1 3 | 2 6 7 | 4 8 5 |
| 6 1 9 | 3 5 7 | 4 8 2 | 3 5 6 | 9 7 4 | 8 1 2 | 4 7 6 | 8 5 9 | 3 1 2 |
+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| 9 8 6 | 1 3 4 | 5 2 7 | 6 4 5 | 1 2 3 | 9 7 8 | 3 8 9 | 5 4 1 | 2 6 7 |
| 1 7 2 | 5 8 9 | 3 6 4 | 8 1 2 | 4 9 7 | 5 3 6 | 7 4 1 | 9 2 6 | 8 5 3 |
| 3 4 5 | 7 6 2 | 1 9 8 | 7 9 3 | 5 8 6 | 1 2 4 | 6 5 2 | 7 3 8 | 1 9 4 |
+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| 4 6 1 | 8 7 3 | 2 5 9 | 4 6 7 | 8 1 2 | 3 9 5 | 8 6 7 | 3 9 2 | 5 4 1 |
| 2 5 7 | 9 4 6 | 8 1 3 | 5 2 1 | 3 6 9 | 4 8 7 | 2 9 4 | 1 7 5 | 6 3 8 |
| 8 9 3 | 2 1 5 | 7 4 6 | 9 3 8 | 7 4 5 | 2 6 1 | 1 3 5 | 6 8 4 | 7 2 9 |
+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| 5 2 3 | 8 7 1 | 6 9 4 | 2 7 5 | 1 9 3 | 4 8 6 | 1 7 4 | 6 2 5 | 9 3 8 |
| 4 1 9 | 3 5 6 | 7 8 2 | 6 9 8 | 5 7 4 | 1 2 3 | 9 6 2 | 8 3 7 | 1 4 5 |
| 6 8 7 | 4 2 9 | 1 3 5 | 3 1 4 | 6 8 2 | 7 9 5 | 5 3 8 | 9 1 4 | 2 6 7 |
+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| 2 7 6 | 9 8 5 | 3 4 1 | 5 6 7 | 2 1 8 | 9 3 4 | 4 5 1 | 3 6 8 | 7 9 2 |
| 1 9 4 | 6 3 2 | 5 7 8 | 9 8 2 | 3 4 7 | 5 6 1 | 8 2 6 | 7 5 9 | 3 1 4 |
| 3 5 8 | 7 1 4 | 2 6 9 | 1 4 3 | 9 5 6 | 8 7 2 | 3 9 7 | 1 4 2 | 5 8 6 |
+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| 7 3 5 | 2 9 8 | 4 1 6 | 7 3 1 | 8 2 5 | 6 4 9 | 7 1 3 | 2 8 6 | 4 5 9 |
| 9 4 1 | 5 6 7 | 8 2 3 | 4 5 6 | 7 3 9 | 2 1 8 | 2 8 5 | 4 9 1 | 6 7 3 |
| 8 6 2 | 1 4 3 | 9 5 7 | 8 2 9 | 4 6 1 | 3 5 7 | 6 4 9 | 5 7 3 | 8 2 1 |
+-------+-------+-------+-------+-------+-------+-------+-------+-------+

_________________
Jean-Christophe
"When you have eliminated the impossible, whatever remains, however improbable, must be the truth." Sherlock Holmes.
Top
 Profile  
Reply with quote  
Børge
PostPosted: Fri Jun 13, 2008 8:21 pm 
Offline
Grand Master
Grand Master
User avatar

Joined: Mon Apr 21, 2008 10:32 am
Posts: 868
Jean-Christophe wrote:
Here is A CE, not really hard, which has a unique solution. Guess which technique(s) can be used to solve it?
Not hard :scratch:
Guessing is not needed. Just ask a solver:
Hidden Text:
404 Naked Singles
145 Hidden Singles
7 Intersections
1 Naked Pair
1 X-Wing
2 XY-Wings
1 Y-Wing

_________________
Quis custodiet ipsos custodes?
Normal: [D  Y-m-d,  G:i]     PM->email: [D, d M Y H:i:s]
Top
 Profile  
Reply with quote  
Jean-Christophe
PostPosted: Fri Jun 13, 2008 8:33 pm 
Offline
Expert
Expert

Joined: Sun Apr 27, 2008 10:44 am
Posts: 102
Location: Belgium
Børge wrote:
Not hard :scratch:

You may trust the puzzle designer for the unique solution, or check for it if you don't trust me :pirate:
Techniques Used:
404 Naked Singles
143 Hidden Singles
7 Intersections
1 Uniqueness Test 1
1 BUG+1

If you really don't trust me:
Techniques Used:
406 Naked Singles
143 Hidden Singles
7 Intersections
1 Naked Pairs
1 XY-Wings
1 Y-Wings

_________________
Jean-Christophe
"When you have eliminated the impossible, whatever remains, however improbable, must be the truth." Sherlock Holmes.
Top
 Profile  
Reply with quote  
Børge
PostPosted: Fri Jun 13, 2008 8:46 pm 
Offline
Grand Master
Grand Master
User avatar

Joined: Mon Apr 21, 2008 10:32 am
Posts: 868
Jean-Christophe wrote:
You may trust the puzzle designer for the unique solution, or check for it if you don't trust me :pirate:
I turned on the required solver and immediately fond a BUG in JSudoku. :D
The two popup windows interlock in a deadlock, so you cannot interact with any of them.
I had to use the Windows Task Manager to kill the JSudoku application :rambo:

Image


EDIT: In a second attempt I was able to push the STOP button in the top window, which stopped the solvers, and then press the CHECK button in the bottom window. A second Ctrl+Shift+D then solved the puzzle.
Could have been a timing problem in the first attempt. I suggest that you do not bring up the top window whenever the bottom is displayed.

_________________
Quis custodiet ipsos custodes?
Normal: [D  Y-m-d,  G:i]     PM->email: [D, d M Y H:i:s]


Last edited by Børge on Fri Jun 13, 2008 9:00 pm, edited 4 times in total.

Top
 Profile  
Reply with quote  
Jean-Christophe
PostPosted: Fri Jun 13, 2008 8:52 pm 
Offline
Expert
Expert

Joined: Sun Apr 27, 2008 10:44 am
Posts: 102
Location: Belgium
Børge wrote:
I turned on the required solver and immediately fond a BUG in JSudoku. :D
The two popup windows interlock in a deadlock, so you cannot interact with any of them.
I had to use the Windows Task Manager to kill the JSudoku application :rambo:
It's already fixed... for the next release.
You should be able to cancel the two dialogs without having to kill the application.

_________________
Jean-Christophe
"When you have eliminated the impossible, whatever remains, however improbable, must be the truth." Sherlock Holmes.
Top
 Profile  
Reply with quote  
Display posts from previous:  Sort by  
Post new topic Reply to topic  Page 1 of 1
  [ 5 posts ] 

Board index » Puzzles and Solutions » Clueless Explosions

All times are UTC


Who is online

Users browsing this forum: No registered users and 14 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:  
Powered by phpBB® Forum Software © phpBB Group