Thank you for posting your solutions.
For this puzzle uniqueness helps a little.
- Code: Select all
.-----------------------------------------------------------------------------------------------.
| 12345689 13679 146789 | 4578 134679 13456 | 235689 2345789 2569 |
| 2345689 3679 46789 | 4578 34679 3456 | 235689 2345789 1 |
| 1345689 13679 146789 | 4578 134679 2 | 35689 345789 569 |
|-------------------------------+-------------------------------+-------------------------------|
| 169 1679 2 | 3 178 158 | 4 589 569 |
| 349 39 5 | 6 a*48(2) *48 | 89-2 1 7 |
| 146 8 1467 | 457 147-2 9 | 256 e25 3 |
|-------------------------------+-------------------------------+-------------------------------|
| 169 4 169 | 2 c36 7 | 135 d35 8 |
| 68 5 3 | 1 b*48(6) b*48(6) | 7 29 29 |
| 7 2 18 | 9 5 38 | 13 6 4 |
'-----------------------------------------------------------------------------------------------'
1. UR(48)r58c56 using internals
(2)r5c5 =UR= (6)r8c56 - (6=3)r7c5 - (3=5)r7c8 - (5=2)r6c8 => -2 r5c7, r6c5 [1 placement]
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- Code: Select all
.-----------------------------------------------------------------------------------------------.
| 12345689 13679 146789 | 4578 134679 13456 | 235689 2345789 2569 |
| 2345689 3679 46789 | 4578 34679 3456 | 235689 2345789 1 |
| 1345689 13679 146789 | 4578 134679 2 | 35689 345789 569 |
|-------------------------------+-------------------------------+-------------------------------|
| 169 1679 2 | 3 178 158 | 4 d589 569 |
| 349 39 5 | 6 2 b48 |c89 1 7 |
| 146 8 1467 | 457 147 9 | 256 d25 3 |
|-------------------------------+-------------------------------+-------------------------------|
| 169 4 169 | 2 6-3 7 | 135 d35 8 |
| 68 5 3 | 1 468 468 | 7 d29 29 |
| 7 2 18 | 9 5 a38 | 1-3 6 4 |
'-----------------------------------------------------------------------------------------------'
2. ALS W-wing (3=8)r9c6 - (8)r5c6 = (8)r5c7 - (8=5923)r4678c8
=> -3 r7c5, -3 r9c7; lclste [LC (19)r47c1 => -19 r12356c1; ste]
Without using the UR, we have the related (to the ALS W-wing) Kraken Row (8) at row 5
Kraken Row (8)r5c567 => -3 r7c5, -3 r9c7; lclste [LC (19)r47c1 => -19 r12356c1; ste].
(8-2)r5c5 = (2)r6c5 - (2=53)r67c8
||
(8)r5c7 - (8=2953)r4678c8
||
(8)r5c6 - (8=3)r9c6