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Please solve this sudoku

 
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maarten

Joined: 16 Jun 2006
Posts: 7
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Location: The Netherlands

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PostPosted: Thu Oct 05, 2006 1:28 pm    Post subject: Please solve this sudoku Reply with quote

Greetings all,
Question: who can solve the following two sudoku's? I've coded quite a lot of techniques, but I don't know what techniques to do next...
Thanx people!

Code:
708000300000201000500000000040000026300080000000100090090600004000070500000000000

Sudoku Solver Engine v3.0 started
Succesfully parsed the given string.

7       126     8      |459     4569    4569   |3       1456    1259
469     36      3469   |2       34569   1      |46789   45678   5789
5       1236    123469 |34789   3469    346789 |1246789 14678   12789
-----------------------------------------------------------------------
189     4       1579   |3579    359     3579   |178     2       6
3       12567   125679 |4579    8       245679 |147     1457    157
268     25678   2567   |1       23456   234567 |478     9       3578
-----------------------------------------------------------------------
128     9       12357  |6       1235    2358   |1278    1378    4
12468   12368   12346  |3489    7       23489  |5       1368    12389
12468   1235678 1234567|34589   123459  234589 |126789  13678   123789

Solving started
Found a Hidden Single in group B47 - Setting cell R6C9 to value 3
Found a Locked Candidate 5 in group B47 - removing from cell(s) R5C2,R5C3,R5C4,R
5C6
Found a Locked Candidate 7 in group R2 - removing from cell(s) R3C7,R3C8,R3C9
Found a Locked Candidate 8 in group R2 - removing from cell(s) R3C7,R3C8,R3C9
Found a Locked Candidate 8 in group B47 - removing from cell(s) R2C7,R7C7,R9C7
Found a Naked Double 3/4/5/6/9 in group B14 - removing these candidates from cel
ls R3C4,R3C6
Found a Locked Candidate 3 in group B14 - removing from cell(s) R4C5,R7C5,R9C5
Solving stopped
Sudoku state: UNSOLVED

7       126     8      |459     4569    4569   |3       1456    1259
469     36      3469   |2       34569   1      |4679    45678   5789
5       1236    123469 |78      3469    78     |12469   146     129
-----------------------------------------------------------------------
189     4       1579   |3579    59      3579   |178     2       6
3       1267    12679  |479     8       24679  |147     1457    157
268     25678   2567   |1       2456    24567  |478     9       3
-----------------------------------------------------------------------
128     9       12357  |6       125     2358   |127     1378    4
12468   12368   12346  |3489    7       23489  |5       1368    1289
12468   1235678 1234567|34589   12459   234589 |12679   13678   12789


Code:
700000400020070080003008009000500300060020090001007006000300900030040060009001035

Sudoku Solver Engine v3.0 started
Succesfully parsed the given string.

7      1589   568   |1269   13569  23569 |4      125    123
14569  2      456   |1469   7      34569 |156    8      13
1456   145    3     |1246   156    8     |12567  1257   9
--------------------------------------------------------------
2489   4789   2478  |5      1689   469   |3      1247   12478
3458   6      4578  |148    2      34    |1578   9      1478
234589 4589   1     |489    389    7     |258    245    6
--------------------------------------------------------------
124568 14578  245678|3      568    256   |9      1247   12478
1258   3      2578  |2789   4      259   |1278   6      1278
2468   478    9     |2678   68     1     |278    3      5

Solving started
Found a Locked Candidate 4 in group R9 - removing from cell(s) R7C1,R7C2,R7C3
Solving stopped
Sudoku state: UNSOLVED

7      1589   568   |1269   13569  23569 |4      125    123
14569  2      456   |1469   7      34569 |156    8      13
1456   145    3     |1246   156    8     |12567  1257   9
--------------------------------------------------------------
2489   4789   2478  |5      1689   469   |3      1247   12478
3458   6      4578  |148    2      34    |1578   9      1478
234589 4589   1     |489    389    7     |258    245    6
--------------------------------------------------------------
12568  1578   25678 |3      568    256   |9      1247   12478
1258   3      2578  |2789   4      259   |1278   6      1278
2468   478    9     |2678   68     1     |278    3      5
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Ruud
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Joined: 17 Sep 2005
Posts: 708
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Location: Netherlands

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PostPosted: Thu Oct 05, 2006 2:02 pm    Post subject: Reply with quote

These sudokus are #2 and #77 from Dukuso's Top 1465. They can only be solved by Brute Force/Guessing or a series of long loops with embedded Almost Locked Sets. #3 from the collection has the same difficulty.
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maarten

Joined: 16 Jun 2006
Posts: 7
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Location: The Netherlands

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PostPosted: Thu Oct 05, 2006 2:07 pm    Post subject: Reply with quote

OK, thanx. Where can I find Dukuso's Top 1465?
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Jean-Christophe

Joined: 19 Mar 2006
Posts: 126
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Location: Belgium

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PostPosted: Thu Oct 05, 2006 4:07 pm    Post subject: Reply with quote

http://www.google.com/search?q=top1465
_________________
Jean-Christophe
"When you have eliminated the impossible, whatever remains, however improbable, must be the truth." Sherlock Holmes.
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rmessenger

Joined: 08 Mar 2007
Posts: 3
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PostPosted: Thu Mar 08, 2007 4:52 am    Post subject: Reply with quote

708000300000201000500000000040000026300080000000100090090600004000070500000000000

goes to:
-------------------------
| 7 2 8 | 9 4 6 | 3 1 5 |
| 9 3 4 | 2 5 1 | 6 7 8 |
| 5 1 6 | 7 3 8 | 2 4 9 |
-------------------------
| 1 4 7 | 5 9 3 | 8 2 6 |
| 3 6 9 | 4 8 2 | 1 5 7 |
| 8 5 2 | 1 6 7 | 4 9 3 |
-------------------------
| 2 9 3 | 6 1 5 | 7 8 4 |
| 4 8 1 | 3 7 9 | 5 6 2 |
| 6 7 5 | 8 2 4 | 9 3 1 |
-------------------------


700000400020070080003008009000500300060020090001007006000300900030040060009001035

goes to:
-------------------------
| 7 9 8 | 6 3 5 | 4 2 1 |
| 1 2 6 | 9 7 4 | 5 8 3 |
| 4 5 3 | 2 1 8 | 6 7 9 |
-------------------------
| 9 7 2 | 5 8 6 | 3 1 4 |
| 5 6 4 | 1 2 3 | 8 9 7 |
| 3 8 1 | 4 9 7 | 2 5 6 |
-------------------------
| 6 1 7 | 3 5 2 | 9 4 8 |
| 8 3 5 | 7 4 9 | 1 6 2 |
| 2 4 9 | 8 6 1 | 7 3 5 |
-------------------------
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battlesudoku.com

Joined: 23 Dec 2008
Posts: 3
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PostPosted: Thu Dec 25, 2008 3:50 pm    Post subject: battlesudoku Reply with quote

Hi everyone, try my new battlesudoku website,
and tell me what you think.

You can actually play against your friends in battle mode.

Best Regards,
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NewUrbanBlues

Joined: 22 Oct 2006
Posts: 36
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PostPosted: Thu Jan 22, 2009 7:42 pm    Post subject: Isanaki Sudoku 2.4 needs some guessing Reply with quote

Hello

Here is the log from Isanaki Sudoku 2.4a. The Brute Force Guess has to be called twice to solve the grid..... Ooops, need to add more sophisticated techniques ... Confused Confused Confused Confused

Thierry

Board Processing Log Data
Isanaki V 2.4a (C) 2006-2009 - TGMDev

Original Board Solved Board
7.8...3.. 728946315
...2.1... 934251678
5........ 516738249
.4.....26 147593826
3...8.... 369482157
...1...9. 852167493
.9.6....4 293615784
....7.5.. 481379562
......... 675824931

Difficulty Level: Fiendish Board Score: 301

Techniques Summary

01 Single in a Box 45
02 Single in a Row 6
03 Naked Single in a Row, a Box or a Column 4
04 Hidden Single in a Row 5
05 Hidden Single in a Column 1
06 Locked Candidates Type 1 in a Row 3
07 Locked Candidates Type 1 in a Column 5
08 Locked Candidates Type 2 in a Row 2
09 Locked Candidates Type 2 in a Column 1
10 Naked Pair in a Column 1
11 Hidden Pair in a Row 2
12 Hidden Pair in a Column 1
13 Brute Force Guess 2

Board Solving Log

001 Single in a Box Given 3 solved at r6c9
002 Locked Candidates Type 1 in a Row Candidate 7 removed in Cells r3c7, r3c8 & r3c9
003 Locked Candidates Type 1 in a Row Candidate 8 removed in Cells r3c7, r3c8 & r3c9
004 Locked Candidates Type 1 in a Column Candidate 8 removed in Cells r2c7, r7c7 & r9c7
005 Hidden Pair in a Row Candidates other than 7 and 8 removed in Cells r3c4 & r3c6
006 Locked Candidates Type 1 in a Column Candidate 3 removed in Cells r4c5, r7c5 & r9c5
007 Brute Force Guess Candidate 8 removed in Cells r7c6, r8c6, r9c6 & r3c4
008 Single in a Box Given 7 solved at r3c4
009 Brute Force Guess Candidate 9 removed in Cells r1c5, r2c5, r3c5, r9c5, r4c1, r4c3, r4c4, r4c6, r5c4 & r5c6
010 Single in a Box Given 9 solved at r5c3
011 Single in a Box Given 9 solved at r2c1
012 Locked Candidates Type 1 in a Row Candidate 9 removed in Cell r1c9
013 Locked Candidates Type 1 in a Column Candidate 4 removed in Cells r8c3 & r9c3
014 Hidden Pair in a Row Candidates other than 2 and 6 removed in Cells r5c2 & r5c6
015 Locked Candidates Type 2 in a Row Candidate 1 removed in Cell r4c7
016 Locked Candidates Type 2 in a Row Candidate 7 removed in Cells r4c7 & r6c7
017 Naked Single in a Row, a Box or a Column Given 8 solved at r4c7
018 Naked Single in a Row, a Box or a Column Given 1 solved at r4c1
019 Naked Single in a Row, a Box or a Column Given 4 solved at r6c7
020 Hidden Single in a Row Given 4 solved at r5c4
021 Hidden Pair in a Column Candidates other than 5 and 7 removed in Cells r6c2 & r9c2
022 Hidden Single in a Row Given 8 solved at r6c1
023 Single in a Row Given 8 solved at r7c8
024 Single in a Box Given 8 solved at r2c9
025 Hidden Single in a Row Given 8 solved at r9c4
026 Single in a Box Given 8 solved at r8c2
027 Naked Single in a Row, a Box or a Column Given 2 solved at r7c1
028 Locked Candidates Type 1 in a Column Candidate 1 removed in Cell r3c3
029 Locked Candidates Type 1 in a Column Candidate 3 removed in Cells r2c3 & r3c3
030 Locked Candidates Type 2 in a Column Candidate 6 removed in Cells r8c3 & r9c3
031 Naked Pair in a Column Candidates 1 and/or 7 removed in Cells r2c7, r3c7 & r9c7
032 Hidden Single in a Row Given 7 solved at r2c8
033 Hidden Single in a Row Given 5 solved at r2c5
034 Single in a Box Given 3 solved at r3c5
035 Single in a Row Given 4 solved at r2c3
036 Single in a Box Given 3 solved at r2c2
037 Single in a Row Given 6 solved at r2c7
038 Single in a Row Given 4 solved at r3c8
039 Hidden Single in a Column Given 5 solved at r4c4
040 Single in a Box Given 3 solved at r4c6
041 Single in a Box Given 3 solved at r8c4
042 Single in a Box Given 3 solved at r9c8
043 Single in a Box Given 3 solved at r7c3
044 Single in a Box Given 6 solved at r8c8
045 Single in a Row Given 7 solved at r4c3
046 Single in a Box Given 7 solved at r9c2
047 Single in a Box Given 5 solved at r9c3
048 Single in a Box Given 1 solved at r8c3
049 Single in a Box Given 6 solved at r9c1
050 Single in a Box Given 4 solved at r8c1
051 Single in a Box Given 5 solved at r7c6
052 Single in a Box Given 7 solved at r7c7
053 Single in a Box Given 7 solved at r5c9
054 Single in a Box Given 7 solved at r6c6
055 Single in a Box Given 5 solved at r5c8
056 Single in a Box Given 5 solved at r1c9
057 Single in a Box Given 5 solved at r6c2
058 Single in a Box Given 1 solved at r5c7
059 Single in a Box Given 1 solved at r9c9
060 Single in a Box Given 1 solved at r1c8
061 Single in a Box Given 1 solved at r3c2
062 Single in a Box Given 1 solved at r7c5
063 Single in a Row Given 6 solved at r3c3
064 Single in a Box Given 2 solved at r1c2
065 Single in a Box Given 2 solved at r6c3
066 Single in a Box Given 6 solved at r5c2
067 Single in a Box Given 2 solved at r5c6
068 Single in a Box Given 6 solved at r6c5
069 Single in a Box Given 6 solved at r1c6
070 Single in a Box Given 4 solved at r1c5
071 Single in a Box Given 9 solved at r1c4
072 Single in a Box Given 2 solved at r9c5
073 Single in a Box Given 4 solved at r9c6
074 Single in a Box Given 9 solved at r8c6
075 Single in a Box Given 2 solved at r8c9
076 Single in a Box Given 2 solved at r3c7
077 Single in a Box Given 9 solved at r3c9
078 Single in a Box Given 9 solved at r9c7
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