Not too hard – again
- Code: Select all
+---+---+---+
|..1|72.|5..|
|5..|..4|...|
|.29|..6|...|
+---+---+---+
|4.5|.1.|..8|
|...|6.9|...|
|2..|.4.|1.7|
+---+---+---+
|...|3..|95.|
|...|9..|..4|
|..8|.65|7..|
+---+---+---+
+---+---+---+
|..1|72.|5..|
|5..|..4|...|
|.29|..6|...|
+---+---+---+
|4.5|.1.|..8|
|...|6.9|...|
|2..|.4.|1.7|
+---+---+---+
|...|3..|95.|
|...|9..|..4|
|..8|.65|7..|
+---+---+---+
+-------------+--------+----------------+
| 68 4 1 | 7 2 3 | 5 68 9 |
| 5 3678 36 | 18 9 4 | 2368 127 1236 |
| 378 2 9 | 18 5 6 | 348 147 a13 |
+-------------+--------+----------------+
| 4 369 5 | 2 1 7 | 36 369 8 |
| 18 18 7 | 6 3 9 | 24 24 5 |
| 2 369 36 | 5 4 8 | 1 369 7 |
+-------------+--------+----------------+
| 167 167 4 | 3 8 2 | 9 5 a6-1 |
| 36 5 2 | 9 7 1 | 368 368 4 |
| 9 13 8 | 4 6 5 | 7 b12 a123 |
+-------------+--------+----------------+
+--------------------+-----------------+----------------------+
| 68 4 1 | 7 2 3 | 5 68 9 |
| 5 3678 a36 | 18 9 4 | 2368 127 123-6 |
| 378 2 9 | 18 5 6 | 348 147 13 |
+--------------------+-----------------+----------------------+
| 4 369* 5 | 2 1 7 | 36 369* 8 |
| 18 18 7 | 6 3 9 | 24 24 5 |
| 2 369* b36 | 5 4 8 | 1 369* 7 |
+--------------------+-----------------+----------------------+
| 167 167 4 | 3 8 2 | 9 5 d16 |
| 36 5 2 | 9 7 1 | 368 c368 4 |
| 9 13 8 | 4 6 5 | 7 d12 d123 |
+--------------------+-----------------+----------------------+
after singles:
68 4 1 7 2 3 5 b(68) 9
5 3678 36 18 9 4 2368 123678 1236
a±378 2 9 18 5 6 348 13478 1×3
4 369 5 2 1 7 36 c(39)6 8
18 18 7 6 3 9 24 24 5
2 369 36 5 4 8 1 c(39)6 7
167 167 4 3 8 2 9 5 16
a+36 5 2 9 7 1 368 b3(68) 4
9 d(1)3 8 4 6 5 7 d(12)3 d(12+3)
c1n3{r3 r8} - c8{r1r8}{n6n8} - c8{r4r6}{n3n9} - r9{c2c8c9}{n1n2n3} => r3c9 <> 3
ste.
but if the quad in c8 is out of the way: c1n3{r3 r8} - r9n3{c2 c9} => r3c9 <> 3