Hey guys,
Another puzzle again. Tried something with UR's and other techniques, but I can't work it out..
I hope the notes are clear.
https://ibb.co/xJs6Zkh
.---------.-----------.------------.
| 1 6 5 | 4 3 78 | 78 2 9 |
| 3 4 9 | 2 78 5 | 178 17 6 |
| 8 7 2 | 1 9 6 | 4 5 3 |
:---------+-----------+------------:
| 2 1 7 | 9 6 4 | 3 8 5 |
| 5 9 8 | 7 2 3 | 6 4 1 |
| 4 3 6 | 5 18 18 | 2 9 7 |
:---------+-----------+------------:
| 6 5 4 | 8 17 9 | 17 3 2 |
| 7 8 1 | 3 5 2 | 9 6 4 |
| 9 2 3 | 6 4 17 | 5 17 8 |
'---------'-----------'------------'
*-----------*
|1..|...|...|
|.49|2..|...|
|.7.|1..|.53|
|---+---+---|
|..7|..4|...|
|5..|7.3|..1|
|...|5..|2..|
|---+---+---|
|65.|..9|.3.|
|...|..2|96.|
|...|...|..8|
*-----------*
*--------------------------------*
| 1 6 5 | 4 3 a78 |b78 2 9 |
| 3 4 9 | 2 8-7 5 | 178 17 6 |
| 8 7 2 | 1 9 6 | 4 5 3 |
|-------+-------------+----------|
| 2 1 7 | 9 6 4 | 3 8 5 |
| 5 9 8 | 7 2 3 | 6 4 1 |
| 4 3 6 | 5 18 18 | 2 9 7 |
|-------+-------------+----------|
| 6 5 4 | 8 d17 9 |c17 3 2 |
| 7 8 1 | 3 5 2 | 9 6 4 |
| 9 2 3 | 6 4 1-7 | 5 17 8 |
*--------------------------------*
+----------------+----------------+----------------+
| 1 6 5 | 4 3 78 | 78 2 9 |
| 3 4 9 | 2 8-7 5 | 178 d17 6 |
| 8 7 2 | 1 9 6 | 4 5 3 |
+----------------+----------------+----------------+
| 2 1 7 | 9 6 4 | 3 8 5 |
| 5 9 8 | 7 2 3 | 6 4 1 |
| 4 3 6 | 5 18 18 | 2 9 7 |
+----------------+----------------+----------------+
| 6 5 4 | 8 a17 9 |b17 3 2 |
| 7 8 1 | 3 5 2 | 9 6 4 |
| 9 2 3 | 6 4 17 | 5 c17 8 |
+----------------+----------------+----------------+