Three steps.
- Code: Select all
.-----------------------------------------------------------.
| 9 5 8 | 3 2 7 | 4 6 1 |
| 1 2 67 | 8 46-9 45-9 | 579 579 3 |
| 3 c67 4 |a19 b69 15-9 | 57-9 8 2 |
|-------------------+-------------------+-------------------|
| 8 34-7 2379 | 5 79 29 | 1 347 6 |
| 6 d17 279-1 | 4 3 e129 | 257 57 8 |
| 5 134-7 1237 |f127 8 6 | 237 347 9 |
|-------------------+-------------------+-------------------|
| 2 138 13 | 79 479 489 | 6 39 5 |
| 4 368 36 | 29 5 289 | 39 1 7 |
| 7 9 5 | 6 1 3 | 8 2 4 |
'-----------------------------------------------------------'
1. (1=9)r3c4 - (9=6)r3c5 - (6=7)r3c2 - (7=1)r5c2 - (1)r5c6 = (1)r6c4 - (1=9)r3c4 Loop
=> -9 r3c67, -9 r2c56, -1 r5c3, -7 r46c2
-----
- Code: Select all
.------------------------------------------------------------.
| 9 5 8 | 3 2 7 | 4 6 1 |
| 1 2 67 | 8 46 Dd45 | 579 579 3 |
| 3 67 4 | 19 69 Cd15 | B57 8 2 |
|-------------------+-------------------+--------------------|
| 8 34 2379 | 5 79 29 | 1 347 6 |
| 6 b17 279 | 4 3 c129 | b257 b57 8 |
| 5 134 1237 | 127 8 6 |Aa23(7) 347 9 |
|-------------------+-------------------+--------------------|
| 2 Ee138 Ee13 | 79 479 Ee489 | 6 Ee39 5 |
| 4 368 36 | 29 5 289 | 9-3 1 7 |
| 7 9 5 | 6 1 3 | 8 2 4 |
'------------------------------------------------------------'
[(3=*2)r6c7 - (2=571)r5c278 - (1)r7c2 = (15-4)r23c6 = (4813)r7c2368] =
(7)r6c7 - (7=5)r3c7 - (5)r3c6 = (5-4)r2c6 = (4813)r7c2368 => - 3 r8c7 [12 placements and basics]
-------
- Code: Select all
.--------------------------------------------------.
| 9 5 8 | 3 2 7 | 4 6 1 |
| 1 2 67 | 8 46 45 | 57 9 3 |
| 3 67 4 | 19 69 15 | 57 8 2 |
|----------------+----------------+----------------|
| 8 34 39 | 5 79 2 | 1 47 6 |
| 6 17 79 | 4 3 19 | 2 5 8 |
| 5 14 2 | 17 8 6 | 3 47 9 |
|----------------+----------------+----------------|
| 2 8 1 | 79 47+9 49 | 6 3 5 |
| 4 36 36 | 2 5 8 | 9 1 7 |
| 7 9 5 | 6 1 3 | 8 2 4 |
'--------------------------------------------------'
3. BUG+1: (+9)r7c5; ste