The New Sudoku Players' Forum

[dyitto]

I have classical sudoku and four additional constraint groups for 1-9:

Code: Select all

...|...|...
...|...|...
..X|...|X..
---|---|---
...|...|...
...|X.X|...
...|...|...
---|---|---
...|.X.|...
...|X.X|...
..X|...|X..


..X|...|X..
...|X.X|...
...|.X.|...
---|---|---
...|...|...
...|X.X|...
...|...|...
---|---|---
..X|...|X..
...|...|...
...|...|...

...|...|...
...|...|...
X..|...|X..
---|---|---
.X.|.X.|...
..X|...|...
.X.|.X.|...
---|---|---
X..|...|X..
...|...|...
...|...|...

...|...|...
...|...|...
..X|...|..X
---|---|---
...|.X.|.X.
...|...|X..
...|.X.|.X.
---|---|---
..X|...|..X
...|...|...
...|...|...


Then the following puzzle and my current stage:

Code: Select all

.49|...|...
..2|..6|.9.
...|...|...
---|---|---
2..|...|..4
..3|...|..1
...|3..|...
---|---|---
..1|8..|...
...|...|5..
...|...|...


+-----------------------+-----------------------+-----------------------+
|(3678)    4       9    |(1257)  (12578) (1257) |(378)   (3678)  (25678)|
|(378)     1       2    |  4     (3578)    6    |(378)     9     (578)  |
|(5678)  (357)   (678)  |(279)   (378)   (23789)|  1       4     (2678) |
+-----------------------+-----------------------+-----------------------+
|  2     (6789)  (578)  |(1679)  (6789)  (1789) |(36789) (3578)    4    |
|  4     (6789)    3    |(57)    (26789) (578)  |(6789)  (278)     1    |
|  1     (6789)  (578)  |  3       4     (2789) |(6789)  (2578)  (78)   |
+-----------------------+-----------------------+-----------------------+
|(5679)  (357)     1    |  8     (39)    4      |  2     (67)    (3679) |
|(36789) (378)     4    |(29)    (167)   (239)  |  5     (1678)  (36789)|
|(39)      2     (678)  |(1567)  (1567)  (157)  |  4     (1678)  (39)   |
+-----------------------+-----------------------+-----------------------+


How should I proceed?

There should be a pointing pair or n-tuple but I'm stuck.

I double-checked that my solver finds one single solution.

[HATMAN]

Nothing fancy needed - just fully play the extra groups.

[dyitto]

Nothing fancy needed - just fully play the extra groups.

OK But what exactly is the next step going to be?

[HATMAN]

R3: 6 at c139 points to r4c5<>6
one more pointing triplet then easy

[dyitto]

thanks!