After basics,
- Code: Select all
.--------------------------------------------------------------------.
| 79 1 2 |#89 3 4 | 5 6 #789 |
| 6 89 5 | 7 28 1 | 3 29-8 4 |
| 4 3 789 | 6 5 289 | 1279 279-8 1789 |
|----------------------+----------------------+----------------------|
| 8 *24679 379 | 1 67 *25 | 479 3579 679 |
| 357-2 2467 137 | 248 9 258 | 147 3578 167-8 |
| 579 4679 179 |#48 67 3 | 1479 #5789 2 |
|----------------------+----------------------+----------------------|
| 2379 789-2 3789 | 289 1 6 | 279 4 5 |
| 1 89-2 4 | 5 28 7 | 6 29 3 |
|*279 5 6 | 3 4 *29 | 8 1 79 |
'--------------------------------------------------------------------'
1. SS (8) r1c14,r6c48 => -8 r23c8, r5c9 [NP & 3 placements]
2. SS (2) r4c26,r8c16 => -2 r78c2, r5c1 [NP & 1 placement]
---
- Code: Select all
.-----------------------------------------------------------.
| 7 1 2 | 89 3 4 | 5 6 89 |
| 6 89 5 | 7 28 1 | 3 29 4 |
| 4 3 89 | 6 5 289 | 129 7 189 |
|-------------------+-------------------+-------------------|
| 8 246 379 | 1 67 25 | 479 35 69 |
| 35 246 137 | 248 9 258 | 147 358 16 |
| 59 46 179 | 48 67 3 | 1479 58 2 |
|-------------------+-------------------+-------------------|
| 239 7 389 | 289 1 6 | 29 4 5 |
| 1 *89 4 | 5 *28 7 | 6 29 3 |
| 2-9 5 6 | 3 4 *29 | 8 1 7 |
'-----------------------------------------------------------'
3. Y-wing (982)r8c25,r9c6 => -9 r9c1 [4 placements]
---
- Code: Select all
.-----------------------------------------------------------.
| 7 1 2 | 9 3 4 | 5 6 8 |
| 6 89 5 | 7 28 1 | 3 29 4 |
| 4 3 89 | 6 5 28 | 129 7 19 |
|-------------------+-------------------+-------------------|
| 8 246 379 | 1 67 E52 | 479 35 69 |
|A35 246 137 |D248 9 28-5 | 147 358 16 |
| 59 46 179 | 48 67 3 | 1479 58 2 |
|-------------------+-------------------+-------------------|
|A39 7 389 |C28 1 6 |B29 4 5 |
| 1 89 4 | 5 28 7 | 6 29 3 |
| 2 5 6 | 3 4 9 | 8 1 7 |
'-----------------------------------------------------------'
4. (5=39)r57c1 - (9=2)r7c7 - (2)r7c4 = (2)r5c4 - (2=5)r5c6 => -5 r5c6 [4 placements]
---
- Code: Select all
.--------------------------------------------------.
| 7 1 2 | 9 3 4 | 5 6 8 |
| 6 89 5 | 7 28 1 | 3 29 4 |
| 4 3 C89 | 6 5 B28 | 129 7 C19 |
|----------------+----------------+----------------|
| 8 2 79 | 1 67 5 | 4 3 69 |
| 35 D46 137 |E248 9 A28 | 17 58 D16 |
| 59 46 179 |F4-8 67 3 | 179 58 2 |
|----------------+----------------+----------------|
| 39 7 389 | 28 1 6 | 29 4 5 |
| 1 89 4 | 5 28 7 | 6 29 3 |
| 2 5 6 | 3 4 9 | 8 1 7 |
'--------------------------------------------------'
5. (8)r5c6 = (8)r3c6 - (8=91)r3c39 - (1=64)r5c29 - (4)r5c4 = (4)r6c4 => -8 r6c4; ste
Thanks for the puzzle.