I see a sashimi sword
Code: Select all
1 / / | . / 1 | / / /
. . . | . . . | . . .
. . . | . . . | . . .
---------------------
. . . | # ? 1 | . . .
. . . | # ? # | . . .
. . . | 1 ? # | . . .
---------------------
. . . | . . . | . . .
. . . | . . . | . . .
1 / / | 1 / . | / / /
The "#" symbol denotes fins that need not be there, but may be.
SQ also misses some exclusions marked by the "?".
Here is an actual position.
Code: Select all
.---------------.---------------.---------------.
| 34 1 3469| 8 5 -369 | 39 2 7 |
| 5 69 7 | 2 *36 -3169 | 1349 34 8 |
| 8 2 39 |*13 7 4 | 139 5 6 |
:---------------+---------------+---------------:
| 1 5 23 | 7 4 23 | 6 8 9 |
| 7 69 69 | 5 1 8 | 2 34 34 |
|-324 *34 8 |*36 9 -326 | 5 7 1 |
:---------------+---------------+---------------:
| 234 7 1234| 9 8 13 | 34 6 5 |
| 9 *34 5 |*346 *36 7 | 8 1 2 |
| 6 8 134 | 14 2 5 | 7 9 34 |
'---------------'---------------'---------------'
Thus 3 should be removed from r12c6. If they were finned, still, remove
3s from c6 in box2.
The general case of a disjoint fish where the fracture is in one box leaves the
pattern able to eliminate much like an x-wing or regular sword for the parts
not involved in the box. The box has no external affect.
Sudoku Cue misses, in this case, 3 of the 4 exclusions, r2c6 r6c16.
Edited to add the original puzzle:
Code: Select all
. 1 . | 8 . . | . 2 7
5 . 7 | 2 . . | . . 8
. 2 . | . . 4 | . . .
---------------------
1 5 . | . 4 . | 6 . .
. . . | 5 . 8 | . . .
. . 8 | . 9 . | . 7 1
---------------------
. . . | 9 . . | . 6 .
9 . . | . . 7 | 8 . 2
6 8 . | . . 5 | . 9 .