The New Sudoku Players' Forum

[m_b_metcalf]

As far as I can determine, no x-sudoku for pattern 116 exists.

Code: Select all

 1 . . . . . 6 . 2
 . 5 . 9 . . . 1 .
 . . 2 . . . . . .
 . 7 . . . 6 . 4 .
 . . . . 9 1 . . .
 . . . 7 2 . . . .
 6 . . . . . . . 4
 . 3 . 6 . . . 7 .
 5 . . . . . 8 . .  x-sudoku, 117, hard

 5 . . . . . 6 . 8
 . 7 . 1 . . . 5 .
 . . 8 . . . . . .
 . 5 . . . 6 . 8 .
 . . . . 4 2 . . .
 . . . 9 5 . . . .
 8 . . . . . . . 1
 . 2 . 6 . . . 9 .
 7 . . . . . 3 . . x-sudoku, 117, easy

Regards,

Mike Metcalf

[m_b_metcalf]

Code: Select all

 7 . . 2 . . . 3 4
 . . . . . . 5 . 2
 . . . . . 1 6 9 .
 . . 9 . . 7 2 . .
 . 6 . . 3 . . . .
 4 . . 8 . . . . 1
 . . 2 . . 3 . . .
 . 5 . . 2 . . . .
 9 . . 1 . . . . 6  x-sudoku, 118, easy


 5 . . 1 . . . 3 7
 . . . . . . 4 . 9
 . . . . . 6 2 8 .
 . . 2 . . 5 9 . .
 . 3 . . 4 . . . .
 1 . . 8 . . . . 4
 . . 6 . . 3 . . .
 . 9 . . 2 . . . .
 3 . . 5 . . . . 2  x-sudoku, 118, harder

Regards,

Mike Metcalf

[m_b_metcalf]

No x-sudoku is possible for Game 119.

Code: Select all

 . . 5 . 8 . 9 . .
 . 1 . . . 2 . 4 .
 7 . . . . . 3 . 1
 . . . . . . . 9 .
 5 . . . 7 . 2 . .
 . 9 . . . . . . .
 2 . 6 . 3 . . . 9
 . 5 . 6 . . . 2 .
 . . 4 . . . 5 . .   x-sudoku, 120, easy

 . . 5 . 6 . 7 . .
 . 8 . . . 2 . 3 .
 6 . . . . . 8 . 1
 . . . . . . . 1 .
 2 . . . 5 . 9 . .
 . 3 . . . . . . .
 9 . 2 . 3 . . . 5
 . 7 . 8 . . . 4 .
 . . 8 . . . 3 . .   x-sudoku, 120, hard


Regards,

Mike Metcalf

[Mauricio]

Fearing that this puzzle would be deeply buried if I post it in the patterns game thread, I post it here. Normal sudoku, ER=9.4, but at the start, a grouped continuous nice loop of length 4 can be spotted... (human solvers, please confirm this claim).

Code: Select all

+-------+-------+-------+
| . . 1 | . . 2 | . . 3 |
| . . . | . 3 . | . 4 . |
| 2 . . | 5 . . | 1 . . |
+-------+-------+-------+
| . . 5 | . . 6 | . . 1 |
| . 7 . | . . . | . 8 . |
| 1 . . | 9 . . | 4 . . |
+-------+-------+-------+
| . . 2 | . . 4 | . . 6 |
| . 8 . | . 7 . | . . . |
| 3 . . | 2 . . | 9 . . |
+-------+-------+-------+ ED=9.4/9.4/9.4

[ronk]

Fearing that this puzzle would be deeply buried if I post it in the patterns game thread, I post it here. Normal sudoku, ER=9.4, but at the start, a grouped continuous nice loop of length 4 can be spotted... (human solvers, please confirm this claim).

Code: Select all

+-------+-------+-------+
| . . 1 | . . 2 | . . 3 |
| . . . | . 3 . | . 4 . |
| 2 . . | 5 . . | 1 . . |
+-------+-------+-------+
| . . 5 | . . 6 | . . 1 |
| . 7 . | . . . | . 8 . |
| 1 . . | 9 . . | 4 . . |
+-------+-------+-------+
| . . 2 | . . 4 | . . 6 |
| . 8 . | . 7 . | . . . |
| 3 . . | 2 . . | 9 . . |
+-------+-------+-------+ ED=9.4/9.4/9.4

Confirmed, but I needed Hodoku to find it.

[ttt]

Fearing that this puzzle would be deeply buried if I post it in the patterns game thread, I post it here. Normal sudoku, ER=9.4, but at the start, a grouped continuous nice loop of length 4 can be spotted... (human solvers, please confirm this claim).

Code: Select all

+-------+-------+-------+
| . . 1 | . . 2 | . . 3 |
| . . . | . 3 . | . 4 . |
| 2 . . | 5 . . | 1 . . |
+-------+-------+-------+
| . . 5 | . . 6 | . . 1 |
| . 7 . | . . . | . 8 . |
| 1 . . | 9 . . | 4 . . |
+-------+-------+-------+
| . . 2 | . . 4 | . . 6 |
| . 8 . | . 7 . | . . . |
| 3 . . | 2 . . | 9 . . |
+-------+-------+-------+ ED=9.4/9.4/9.4

Confirmed...

Yes, me too... Based on Mauricio's hint => boxes 5,6,8,9 then ER down to 8.4

ttt

[eleven]

Yes, thats nice. Two grouped kites for 1 and 2 with common pincers.

Code: Select all

+-------------------------+-------------------------+-------------------------+
| 456789  4569    1       | 4678    4689    2       | 5678    5679    3       |
| 56789   569     6789    | 1678    3       1789    | 25678   4       25789   |
| 2       3469    346789  | 5       4689    789     | 1       679     789     |
+-------------------------+-------------------------+-------------------------+
| 489     2349    5       | 3478    248     6       |-237    @2379    1       |
| 469     7       3469    | 134   @#12-45   135     |@2356    8      @259     |
| 1       236     368     | 9       258     3578    | 4      @23567  -257     |
+-------------------------+-------------------------+-------------------------+
| 579     159     2       |-138    #1589    4       | 3578    1357    6       |
| 4569    8       469     |#136     7      #1359    | 235   @#12-35   245     |
| 3       1456    467     | 2      #1568   -158     | 9       157     4578    |
+-------------------------+-------------------------+-------------------------+

We had similar things in the Contrary "17" thread.

[m_b_metcalf]

Code: Select all

 . . 2 . . 5 . . 4
 . . . . 6 . . 8 .
 4 . . 2 . . 3 . .
 . . 8 . 5 . . . 7
 . 3 . 6 . . . 5 .
 2 . . . . . 6 . .
 . . 6 . . 3 . . 5
 . 9 . . 1 . . . .
 5 . . 9 . . 7 . .   x-sudoku, 125, hard

 . . 1 . . 8 . . 2
 . . . . 5 . . 9 .
 9 . . 7 . . 8 . .
 . . 8 . 9 . . . 5
 . 7 . 4 . . . 2 .
 2 . . . . . 9 . .
 . . 3 . . 2 . . 7
 . 4 . . 6 . . . .
 5 . . 8 . . 4 . .  x-sudoku, 125, easy

Regards,

Mike Metcalf

[m_b_metcalf]

Code: Select all

 2 . . . . . 3 . .
 . . . 1 . . . 2 .
 . . . . 3 . 6 . 9
 . 2 . 3 . . . . .
 1 . . . 9 . 7 . .
 . . 7 . . 6 . 5 .
 . . 3 5 . . . . .
 . 4 . . . 3 . . .
 7 . . . 8 . . . 1   x-sudoku, 126, easy

 5 . . . . . 3 . .
 . . . 3 . . . 5 .
 . . . . 4 . 6 . 8
 . 3 . 4 . . . . .
 1 . . . 3 . 8 . .
 . . 8 . . 6 . 9 .
 . . 4 5 . . . . .
 . 7 . . . 4 . . .
 8 . . . 7 . . . 1   x-sudoku, 126, hard

It was hard to create any easy one.

Regards,

Mike Metcalf

[tarek]

Code: Select all

Anti-King:
----------
Fish Pond
............8.324....5.793..13...82...........89...45..312.8....287.4............
+-------+-------+-------+
| . . . | . . . | . . . |
| . . . | 8 . 3 | 2 4 . |
| . . . | 5 . 7 | 9 3 . |
+-------+-------+-------+
| . 1 3 | . . . | 8 2 . |
| . . . | . . . | . . . |
| . 8 9 | . . . | 4 5 . |
+-------+-------+-------+
| . 3 1 | 2 . 8 | . . . |
| . 2 8 | 7 . 4 | . . . |
| . . . | . . . | . . . |
+-------+-------+-------+

Asterisk:
---------
Singles
............9.214....5.372..19...58...........82...63..387.1....213.4............
+-------+-------+-------+
| . . . | . . . | . . . |
| . . . | 9 . 2 | 1 4 . |
| . . . | 5 . 3 | 7 2 . |
+-------+-------+-------+
| . 1 9 | . . . | 5 8 . |
| . . . | . . . | . . . |
| . 8 2 | . . . | 6 3 . |
+-------+-------+-------+
| . 3 8 | 7 . 1 | . . . |
| . 2 1 | 3 . 4 | . . . |
| . . . | . . . | . . . |
+-------+-------+-------+
Advanced
............9.748....1.826..17...93...........83...52..392.1....285.3............
+-------+-------+-------+
| . . . | . . . | . . . |
| . . . | 9 . 7 | 4 8 . |
| . . . | 1 . 8 | 2 6 . |
+-------+-------+-------+
| . 1 7 | . . . | 9 3 . |
| . . . | . . . | . . . |
| . 8 3 | . . . | 5 2 . |
+-------+-------+-------+
| . 3 9 | 2 . 1 | . . . |
| . 2 8 | 5 . 3 | . . . |
| . . . | . . . | . . . |
+-------+-------+-------+

Girandola:
----------
Singles
............7.483....8.241..19...35...........83...92..381.5....213.7............
+-------+-------+-------+
| . . . | . . . | . . . |
| . . . | 7 . 4 | 8 3 . |
| . . . | 8 . 2 | 4 1 . |
+-------+-------+-------+
| . 1 9 | . . . | 3 5 . |
| . . . | . . . | . . . |
| . 8 3 | . . . | 9 2 . |
+-------+-------+-------+
| . 3 8 | 1 . 5 | . . . |
| . 2 1 | 3 . 7 | . . . |
| . . . | . . . | . . . |
+-------+-------+-------+
Impossibel
............9.815....2.543..12...79...........87...52..385.4....293.7............
+-------+-------+-------+
| . . . | . . . | . . . |
| . . . | 9 . 8 | 1 5 . |
| . . . | 2 . 5 | 4 3 . |
+-------+-------+-------+
| . 1 2 | . . . | 7 9 . |
| . . . | . . . | . . . |
| . 8 7 | . . . | 5 2 . |
+-------+-------+-------+
| . 3 8 | 5 . 4 | . . . |
| . 2 9 | 3 . 7 | . . . |
| . . . | . . . | . . . |
+-------+-------+-------+

Old Lace:
---------
Singles
............9.835....3.546..12...79...........87...52..385.4....291.3............
+-------+-------+-------+
| . . . | . . . | . . . |
| . . . | 9 . 8 | 3 5 . |
| . . . | 3 . 5 | 4 6 . |
+-------+-------+-------+
| . 1 2 | . . . | 7 9 . |
| . . . | . . . | . . . |
| . 8 7 | . . . | 5 2 . |
+-------+-------+-------+
| . 3 8 | 5 . 4 | . . . |
| . 2 9 | 1 . 3 | . . . |
| . . . | . . . | . . . |
+-------+-------+-------+

[tarek]

Code: Select all

Asterisk:
---------
Doubles
..5...1...1...6.3.3.....4.7...6...8.....9.2...8...2...2.7.6...1.3.4...2...9...6..
+-------+-------+-------+
| . . 5 | . . . | 1 . . |
| . 1 . | . . 6 | . 3 . |
| 3 . . | . . . | 4 . 7 |
+-------+-------+-------+
| . . . | 6 . . | . 8 . |
| . . . | . 9 . | 2 . . |
| . 8 . | . . 2 | . . . |
+-------+-------+-------+
| 2 . 7 | . 6 . | . . 1 |
| . 3 . | 4 . . | . 2 . |
| . . 9 | . . . | 6 . . |
+-------+-------+-------+

Old Lace:
---------
Singles
..7...3...9...2.5.3.....1.4...4...6.....5.9...1...6...2.3.8...7.8.5...1...1...8..
+-------+-------+-------+
| . . 7 | . . . | 3 . . |
| . 9 . | . . 2 | . 5 . |
| 3 . . | . . . | 1 . 4 |
+-------+-------+-------+
| . . . | 4 . . | . 6 . |
| . . . | . 5 . | 9 . . |
| . 1 . | . . 6 | . . . |
+-------+-------+-------+
| 2 . 3 | . 8 . | . . 7 |
| . 8 . | 5 . . | . 1 . |
| . . 1 | . . . | 8 . . |
+-------+-------+-------+

[tarek]

Code: Select all

Old Lace:
---------
Mild
..3.8.2...2...4.3.8.....5.1...8...5.3...9.1...1...5...2.1.7...3.8.9...2...9...7..
+-------+-------+-------+
| . . 3 | . 8 . | 2 . . |
| . 2 . | . . 4 | . 3 . |
| 8 . . | . . . | 5 . 1 |
+-------+-------+-------+
| . . . | 8 . . | . 5 . |
| 3 . . | . 9 . | 1 . . |
| . 1 . | . . 5 | . . . |
+-------+-------+-------+
| 2 . 1 | . 7 . | . . 3 |
| . 8 . | 9 . . | . 2 . |
| . . 9 | . . . | 7 . . |
+-------+-------+-------+

[tarek]

Code: Select all

Asterisk:
---------
Singles
8...1...2.1.....4...2...7.....5.1...3...8...7...7.......9...1...3.....5.2...5...6
+-------+-------+-------+
| 8 . . | . 1 . | . . 2 |
| . 1 . | . . . | . 4 . |
| . . 2 | . . . | 7 . . |
+-------+-------+-------+
| . . . | 5 . 1 | . . . |
| 3 . . | . 8 . | . . 7 |
| . . . | 7 . . | . . . |
+-------+-------+-------+
| . . 9 | . . . | 1 . . |
| . 3 . | . . . | . 5 . |
| 2 . . | . 5 . | . . 6 |
+-------+-------+-------+
Mild
8...7...2.1.....9...7...3.....7.5...3...8...6...2.......9...1...8.....5.2...5...4
+-------+-------+-------+
| 8 . . | . 7 . | . . 2 |
| . 1 . | . . . | . 9 . |
| . . 7 | . . . | 3 . . |
+-------+-------+-------+
| . . . | 7 . 5 | . . . |
| 3 . . | . 8 . | . . 6 |
| . . . | 2 . . | . . . |
+-------+-------+-------+
| . . 9 | . . . | 1 . . |
| . 8 . | . . . | . 5 . |
| 2 . . | . 5 . | . . 4 |
+-------+-------+-------+
Advanced
8...7...1.3.....6...7...4.....1.9...3...5...6...3.......9...3...1.....5.2...9...7
+-------+-------+-------+
| 8 . . | . 7 . | . . 1 |
| . 3 . | . . . | . 6 . |
| . . 7 | . . . | 4 . . |
+-------+-------+-------+
| . . . | 1 . 9 | . . . |
| 3 . . | . 5 . | . . 6 |
| . . . | 3 . . | . . . |
+-------+-------+-------+
| . . 9 | . . . | 3 . . |
| . 1 . | . . . | . 5 . |
| 2 . . | . 9 . | . . 7 |
+-------+-------+-------+

Disjoint Groups:
----------------
Singles
8...1...3.1.....4...2...5.....9.7...3...2...6...3.......9...1...8.....9.2...7...4
+-------+-------+-------+
| 8 . . | . 1 . | . . 3 |
| . 1 . | . . . | . 4 . |
| . . 2 | . . . | 5 . . |
+-------+-------+-------+
| . . . | 9 . 7 | . . . |
| 3 . . | . 2 . | . . 6 |
| . . . | 3 . . | . . . |
+-------+-------+-------+
| . . 9 | . . . | 1 . . |
| . 8 . | . . . | . 9 . |
| 2 . . | . 7 . | . . 4 |
+-------+-------+-------+
Difficult
8...7...3.1.....9...2...4.....3.5...3...2...8...7.......9...1...8.....5.2...9...6
+-------+-------+-------+
| 8 . . | . 7 . | . . 3 |
| . 1 . | . . . | . 9 . |
| . . 2 | . . . | 4 . . |
+-------+-------+-------+
| . . . | 3 . 5 | . . . |
| 3 . . | . 2 . | . . 8 |
| . . . | 7 . . | . . . |
+-------+-------+-------+
| . . 9 | . . . | 1 . . |
| . 8 . | . . . | . 5 . |
| 2 . . | . 9 . | . . 6 |
+-------+-------+-------+

Girandola:
----------
Singles
8...5...9.1.....7...7...6.....8.7...3...1...7...3.......9...4...3.....5.2...8...6
+-------+-------+-------+
| 8 . . | . 5 . | . . 9 |
| . 1 . | . . . | . 7 . |
| . . 7 | . . . | 6 . . |
+-------+-------+-------+
| . . . | 8 . 7 | . . . |
| 3 . . | . 1 . | . . 7 |
| . . . | 3 . . | . . . |
+-------+-------+-------+
| . . 9 | . . . | 4 . . |
| . 3 . | . . . | . 5 . |
| 2 . . | . 8 . | . . 6 |
+-------+-------+-------+

Old Lace:
---------
Singles
8...7...6.2.....9...1...2.....9.3...3...5...8...7.......9...4...1.....2.2...8...7
+-------+-------+-------+
| 8 . . | . 7 . | . . 6 |
| . 2 . | . . . | . 9 . |
| . . 1 | . . . | 2 . . |
+-------+-------+-------+
| . . . | 9 . 3 | . . . |
| 3 . . | . 5 . | . . 8 |
| . . . | 7 . . | . . . |
+-------+-------+-------+
| . . 9 | . . . | 4 . . |
| . 1 . | . . . | . 2 . |
| 2 . . | . 8 . | . . 7 |
+-------+-------+-------+

[tarek]

Code: Select all

Asterisk:
---------
Singles
8.....5.7.7.4...1...3.......9...7.5.....68......52....3.......2.1.3...7.2.....8..
+-------+-------+-------+
| 8 . . | . . . | 5 . 7 |
| . 7 . | 4 . . | . 1 . |
| . . 3 | . . . | . . . |
+-------+-------+-------+
| . 9 . | . . 7 | . 5 . |
| . . . | . 6 8 | . . . |
| . . . | 5 2 . | . . . |
+-------+-------+-------+
| 3 . . | . . . | . . 2 |
| . 1 . | 3 . . | . 7 . |
| 2 . . | . . . | 8 . . |
+-------+-------+-------+
Impossible
8.....9.3.9.1...7...7.......1...7.2.....31......46....3.......1.8.5...4.2.....6..
+-------+-------+-------+
| 8 . . | . . . | 9 . 3 |
| . 9 . | 1 . . | . 7 . |
| . . 7 | . . . | . . . |
+-------+-------+-------+
| . 1 . | . . 7 | . 2 . |
| . . . | . 3 1 | . . . |
| . . . | 4 6 . | . . . |
+-------+-------+-------+
| 3 . . | . . . | . . 1 |
| . 8 . | 5 . . | . 4 . |
| 2 . . | . . . | 6 . . |
+-------+-------+-------+

Disjoint Groups:
----------------
Mild
8.....9.5.9.4...3...7.......3...2.9.....51......93....3.......7.1.5...4.2.....1..
+-------+-------+-------+
| 8 . . | . . . | 9 . 5 |
| . 9 . | 4 . . | . 3 . |
| . . 7 | . . . | . . . |
+-------+-------+-------+
| . 3 . | . . 2 | . 9 . |
| . . . | . 5 1 | . . . |
| . . . | 9 3 . | . . . |
+-------+-------+-------+
| 3 . . | . . . | . . 7 |
| . 1 . | 5 . . | . 4 . |
| 2 . . | . . . | 1 . . |
+-------+-------+-------+

Girandola:
----------
Singles
8.....7.4.9.5...1...2.......8...9.6.....34......71....3.......6.1.9...7.2.....5..
+-------+-------+-------+
| 8 . . | . . . | 7 . 4 |
| . 9 . | 5 . . | . 1 . |
| . . 2 | . . . | . . . |
+-------+-------+-------+
| . 8 . | . . 9 | . 6 . |
| . . . | . 3 4 | . . . |
| . . . | 7 1 . | . . . |
+-------+-------+-------+
| 3 . . | . . . | . . 6 |
| . 1 . | 9 . . | . 7 . |
| 2 . . | . . . | 5 . . |
+-------+-------+-------+

Old Lace:
---------
Singles
8.....6.3.7.5...4...2.......9...3.7.....61......74....3.......2.1.2...3.2.....8..
+-------+-------+-------+
| 8 . . | . . . | 6 . 3 |
| . 7 . | 5 . . | . 4 . |
| . . 2 | . . . | . . . |
+-------+-------+-------+
| . 9 . | . . 3 | . 7 . |
| . . . | . 6 1 | . . . |
| . . . | 7 4 . | . . . |
+-------+-------+-------+
| 3 . . | . . . | . . 2 |
| . 1 . | 2 . . | . 3 . |
| 2 . . | . . . | 8 . . |
+-------+-------+-------+

[tarek]

Code: Select all

Asterisk:
---------
ALS
8..7...49......7.2.....468...9..62...2..4....3..9....7..3..9....1..5....2..1....3
+-------+-------+-------+
| 8 . . | 7 . . | . 4 9 |
| . . . | . . . | 7 . 2 |
| . . . | . . 4 | 6 8 . |
+-------+-------+-------+
| . . 9 | . . 6 | 2 . . |
| . 2 . | . 4 . | . . . |
| 3 . . | 9 . . | . . 7 |
+-------+-------+-------+
| . . 3 | . . 9 | . . . |
| . 1 . | . 5 . | . . . |
| 2 . . | 1 . . | . . 3 |
+-------+-------+-------+

Old Lace:
---------
Singles
8..7...65......7.2.....649...2..48...1..8....3..9....7..1..5....8..1....2..8....3
+-------+-------+-------+
| 8 . . | 7 . . | . 6 5 |
| . . . | . . . | 7 . 2 |
| . . . | . . 6 | 4 9 . |
+-------+-------+-------+
| . . 2 | . . 4 | 8 . . |
| . 1 . | . 8 . | . . . |
| 3 . . | 9 . . | . . 7 |
+-------+-------+-------+
| . . 1 | . . 5 | . . . |
| . 8 . | . 1 . | . . . |
| 2 . . | 8 . . | . . 3 |
+-------+-------+-------+