The New Sudoku Players' Forum

[JPF]

Welcome back Mladen!

1B - First try...

Code: Select all

+---+---+---+
|1..|...|...|
|.2.|...|...|
|..3|...|..1|
+---+---+---+
|...|4..|...|
|...|.5.|.1.|
|...|..6|238|
+---+---+---+
|..8|..1|76.|
|..9|.23|.8.|
|.4.|.65|1.9|
+---+---+---+


JPF

[coloin]

Ahhhhhh
I had this as my best ....back to the old drawing board

Code: Select all

+---+---+---+
|1..|...|...|
|.2.|...|...|
|..3|...|..4|
+---+---+---+
|...|4..|...|
|...|.5.|...|
|..4|..6|192|
+---+---+---+
|..2|.9.|7.3|
|..9|.43|.8.|
|.36|8.2|.49|
+---+---+---+


@mladen ... i have checked all your 39s !! It seems that this pattern isnt well tolerated in large puzzles [ all the rows and numbers are used]

[coloin]

and welcome back too

Code: Select all

1B
+---+---+---+
|1..|...|...|
|.2.|...|...|
|..3|...|..1|
+---+---+---+
|...|4..|...|
|...|.5.|...|
|...|136|47.|
+---+---+---+
|..2|9..|7.5|
|.39|..2|.8.|
|.45|..8|.19|
+---+---+---+



[JPF]

I think it's 1B...

Edited twice:
1B

Code: Select all

+---+---+---+   +---+---+---+
|1..|...|...|   |1..|...|...|
|.2.|...|...|   |.2.|...|...|
|..3|...|..1|   |..3|...|..1|
+---+---+---+   +---+---+---+
|...|4..|...|   |...|4..|...|
|...|.5.|...|   |...|.5.|...|
|...|..6|827|   |...|..6|278|
+---+---+---+   +---+---+---+
|..6|.1.|7.4|   |..5|.13|7.6|
|..4|.67|.85|   |6.1|..2|.85|
|.85|..2|.19|   |.74|.65|..9|
+---+---+---+   +---+---+---+



JPF

[JPF]

3B , symmetry, subgroup

Code: Select all

+---+---+---+
|1..|5..|...|
|.2.|..9|..8|
|..3|.2.|.6.|
+---+---+---+
|7..|4..|..1|
|..8|.5.|4..|
|.4.|..6|.9.|
+---+---+---+
|...|.3.|7..|
|..4|..5|.8.|
|.5.|2..|..9|
+---+---+---+   ED=10.4/10.4/10.4


JPF

[coloin]

Ahhh ... i dont know if thats going to be beaten ! Well done.
My best was

Code: Select all

1B
+---+---+---+
|1..|...|...|
|.2.|...|...|
|..3|...|..1|
+---+---+---+
|...|4..|...|
|...|.5.|...|
|...|.16|278|
+---+---+---+
|.56|..1|7.3|
|..9|.6.|.85|
|..4|.38|.19|
+---+---+---+


[JPF]

Ahhh ... i dont know if thats going to be beaten ! Well done.

yes...Edited

Code: Select all

1B
+---+---+---+   +---+---+---+   +---+---+---+
|1..|...|...|   |1..|...|...|   |1..|...|...|
|.2.|...|...|   |.2.|...|...|   |.2.|...|...|
|..3|...|..1|   |..3|...|..1|   |..3|...|..1|
+---+---+---+   +---+---+---+   +---+---+---+
|...|4..|...|   |...|4..|...|   |...|4..|...|
|...|.5.|...|   |...|.5.|...|   |...|.5.|...|
|...|..6|278|   |...|..6|273|   |...|..6|273|
+---+---+---+   +---+---+---+   +---+---+---+
|..4|..8|7.3|   |.3.|.8.|7.4|   |..1|..5|7.6|
|..5|.92|.84|   |9..|..4|.86|   |56.|.12|.8.|
|..8|53.|1.9|   |.86|.27|3.9|   |4..|.8.|.59|
+---+---+---+   +---+---+---+   +---+---+---+



JPF

[coloin]

For 2B
ive tried various ways for it, I dont know which one makes for more challenge
2B(1)

Code: Select all

+---+---+---+
|987|6..|...|
|65.|...|...|
|..4|..1|8..|
+---+---+---+
|...|8..|.4.|
|...|.7.|..3|
|8.5|9.6|...|
+---+---+---+
|...|...|2..|
|.7.|4..|.3.|
|...|.9.|..1|
+---+---+---+

or
2B(2)

Code: Select all

+---+---+---+
|198|7..|4..|
|.2.|...|...|
|4.3|..2|1..|
+---+---+---+
|..7|4..|5..|
|...|.5.|.6.|
|8..|9.6|..2|
+---+---+---+
|...|...|7..|
|3..|..7|.8.|
|...|8..|..9|
+---+---+---+


or
2B(3)

Code: Select all

+---+---+---+
|1..|987|53.|
|.2.|5..|.7.|
|..3|...|6..|
+---+---+---+
|..6|4..|...|
|...|.5.|...|
|...|..6|1..|
+---+---+---+
|.1.|..4|7..|
|2..|...|.8.|
|...|...|..9|
+---+---+---+


[m_b_metcalf]

My attempt at 2B:

Code: Select all

 1 9 8 7 3 5 4 . .
 . 2 . . . . . . .
 . . 3 . . . . . .
 . 3 7 4 . . . . 1
 9 . . . 5 1 8 . .
 . . 5 . . 6 . . .
 . . . 2 . 9 7 . .
 . . . . 1 . . 8 .
 2 7 . . . . . . 9 27 clues

@mladen: your 39-clue puzzles cannot work because none of them contains the digit '9', so no amount of shuffling can create the 1-9 diagonal.

[JPF]

2B: my turn, first try

Code: Select all

2B
+---+---+---+
|198|763|4..|
|42.|...|...|
|..3|5..|...|
+---+---+---+
|.79|4..|35.|
|...|.5.|...|
|2..|.16|...|
+---+---+---+
|8..|...|7..|
|...|...|.8.|
|...|...|..9|
+---+---+---+


JPF

[m_b_metcalf]

Second attempt at 2B:

Code: Select all

 1 9 8 7 6 5 . 3 .
 . 2 5 . 3 . . . .
 . . 3 . . 9 . . .
 . . . 4 . . 3 . .
 . 6 . . 5 . . . 4
 2 . . . . 6 . . .
 . . . . . . 7 6 .
 . . 1 . . 4 . 8 .
 . . . . 1 . . . 9

[coloin]

2B(2)

Code: Select all

+---+---+---+
|198|765|3..|
|726|...|...|
|..3|...|...|
+---+---+---+
|...|49.|...|
|...|.5.|87.|
|...|..6|.5.|
+---+---+---+
|.31|...|7..|
|...|...|.8.|
|...|14.|..9|
+---+---+---+


my best effort from yesterday .... getting the 4 at r1c7 proved elusive ..

[JPF]

2B

Code: Select all

+---+---+---+
|198|765|3..|
|726|...|...|
|..3|...|...|
+---+---+---+
|...|49.|..6|
|...|.5.|...|
|...|..6|.75|
+---+---+---+
|...|...|7..|
|...|..3|.8.|
|...|18.|2.9|
+---+---+---+


JPF

[coloin]

2B

Code: Select all

+---+---+---+
|198|765|3..|
|726|8..|...|
|..3|...|...|
+---+---+---+
|...|4..|...|
|..9|.5.|..1|
|.3.|..6|...|
+---+---+---+
|...|...|7..|
|6..|...|.8.|
|...|18.|2.9|
+---+---+---+

I think a 4 at r1c7 prevents a minimal puzzle ...

Code: Select all

+---+---+---+
|198|765|4..|
|.2.|...|...|
|..3|...|...|
+---+---+---+
|...|...|...|
|...|...|...|
|...|...|...|
+---+---+---+
|...|...|...|
|...|...|...|
|...|...|...|
+---+---+---+ avoidable pattern ?


[JPF]

2B

Code: Select all

+---+---+---+   +---+---+---+
|198|765|3..|   |198|765|3..|
|726|8..|...|   |726|8..|...|
|..3|...|...|   |..3|...|...|
+---+---+---+   +---+---+---+
|...|4..|...|   |935|4.8|...|
|97.|35.|.16|   |8..|.5.|.1.|
|.5.|..6|...|   |...|..6|...|
+---+---+---+   +---+---+---+
|...|...|7..|   |...|...|7..|
|3..|...|.8.|   |2..|...|.8.|
|...|.7.|2.9|   |...|62.|1.9|
+---+---+---+   +---+---+---+


slowly...

JPF