1. List the braiding possibilities, or copy braid chart from SudoCue tool.
2. Select a band or stack.
3. Choose a digit there that must be going in one of two directions.
4. Assign colors to digits on the chart (N or Z).
5. Examine implications on intersecting stacks or bands.
6. Find a contradiction and eliminate a digit.
This is Friday's DN after Simple Sudoku has made basic eliminations:
Code: Select all
*-----------*
|.93|.52|..6|
|8..|...|.1.|
|24.|.7.|...|
|---+---+---|
|...|...|..7|
|.17|3..|9.5|
|...|.2.|...|
|---+---+---|
|..9|.3.|..1|
|...|.6.|8.3|
|5..|...|64.|
*-----------*
Code: Select all
*-----------*
|.93|.52|..6|
|8..|...|.1.|
|24.|.7.|...|
|---+---+---|
|...|...|..7|
|.17|3..|925|
|...|.2.|...|
|---+---+---|
|..9|.3.|..1|
|...|.6.|8.3|
|53.|...|64.|
*-----------*
Code: Select all
*-----------------------------------------------------------------------------*
| 17 9 3 | 148 5 2 | 47 78 6 |
| 8 567 56 | 469 49 3469 | 23457 1 249 |
| 2 4 156 | 1689 7 13689 | 35 3589 89 |
|-------------------------+-------------------------+-------------------------|
| 39 2568 24568 | 14569 149 14569 | 134 368 7 |
| 46 1 7 | 3 48 468 | 9 2 5 |
| 39 568 4568 | 15679 2 145679 | 134 368 48 |
|-------------------------+-------------------------+-------------------------|
| 467 2678 9 | 2458 3 458 | 257 57 1 |
| 147 27 124 | 12459 6 1459 | 8 579 3 |
| 5 3 128 | 12789 189 1789 | 6 4 29 |
*-----------------------------------------------------------------------------*
Code: Select all
N Z
678 46
2*1a45 1b379
39 58
1467* 3468
59 2*59
3468 146
1a27 1b25
58 789
246*9 24