Walkthrough 1 - Medium
Step 4
| 1 | 6 | 2 | ||||||
| 5 | 3 | 8 | ||||||
| 4 | 5 | 6 | 9 | |||||
| 3 | 5 | 6 | ||||||
| 8 | 1 | 5 | ||||||
| 5 | 7 | |||||||
| 2 | 8 | 3 | ||||||
| 5 | 1 | |||||||
| 9 | 5 | 6 |
After that a nice easy one, the 5s in columns 5 and 6 mean there has to be a 5 in the top left of box 5.
| 1 | 6 | 2 | ||||||
| 5 | 3 | 8 | ||||||
| 4 | 5 | 6 | 9 | |||||
| 3 | 5 | 6 | ||||||
| 8 | 1 | 5 | ||||||
| 5 | 7 | |||||||
| 2 | 8 | 3 | ||||||
| 5 | 1 | |||||||
| 9 | 5 | 6 |
After that a nice easy one, the 5s in columns 5 and 6 mean there has to be a 5 in the top left of box 5.