Also two steps.
- Code: Select all
.--------------------------------------------------------------.
| 3 1 6 | 4 579 59 | 8 579 2 |
| 9 8 7 | 6 235 235 | 34 1 345 |
| 2 4 5 | 8 1379 139 | 367 3679 379 |
|-------------------+---------------------+--------------------|
| 8 3 4 | 1 269 269 | 267 2567 57 |
| 5 2 9 | 3 68 7 | 16 4 d1-8 |
| 7 6 1 | 5 482# 482# | 9 a23(8) a3(8) |
|-------------------+---------------------+--------------------|
| 4 7 2 | 9 1358 1358 | 13 38 6 |
| 1 9 8 | 2 346 346 | 5 37 347 |
| 6 5 3 | 7 b48(1)# b48(1)#| 124 289 c1489 |
'--------------------------------------------------------------'
UR(48)r69c56 using mixed external, internal
1. (8)r6c89 =UR= (1)r9c56 - (1)r9c9 = (1)r5c9 => -8 r5c9 [6 placements and basics]
-----
- Code: Select all
.-----------------------------------------------------------.
| 3 1 6 | 4 7 59 | 8 b59 2 |
| 9 8 7 | 6 235 235 | 34 1 345 |
| 2 4 5 | 8 139 139 | 37 6 a39-7 |
|-------------------+-------------------+-------------------|
| 8 3 4 | 1 69 69 | 27 c25 d57 |
| 5 2 9 | 3 8 7 | 6 4 1 |
| 7 6 1 | 5 24 24 | 9 38 38 |
|-------------------+-------------------+-------------------|
| 4 7 2 | 9 135 1358 | 13 38 6 |
| 1 9 8 | 2 346 346 | 5 7 34 |
| 6 5 3 | 7 14 148 | 124 29 489 |
'-----------------------------------------------------------'
2. (9)r3c9 = (9-5)r1c8 = (5)r4c8 - (5=7)r4c9 => -7 r3c9; ste