The New Sudoku Players' Forum

[Wepwawet]

I have just completed my coding of complex fish, using templates (not Kraken variants) and come across this scenario ...

.----------------.---------------.-----------------.
| 1467 124 5 | 39 29 3679 | 14 147 8 |
| 1467 3 124 | 167 26 8 | 9 1457 1456 |
| 167 89 89 | 17 4 5 | 12 3 126 |
:----------------+---------------+-----------------:
| 9 14 3 | 67 8 67 | 5 2 14 |
| 8 7 14 | 5 3 2 | 6 14 9 |
| 2 5 6 | 49 1 49 | 3 8 7 |
:----------------+---------------+-----------------:
| 134 6 149 | 2 7 134 | 8 1459 1345 |
| 134 149 7 | 8 5 1349 | 124 6 234 |
| 5 28 28 | 34 69 136 | 7 149 134 |
'----------------'---------------'-----------------'#

Now Hoduko tackles the solving of this puzzle by employing the following 2 strategies;
Finned Franken Swordfish: 1 c27b6 r148 fr3c7 fr5c8 => r1c8<>1
Finned Franken Swordfish: 4 c27b6 r148 fr5c8 => r1c8<>4

Whilst, my solver suggests;
Finned Franken Swordfish: 1 c27b6/r48b3, fins at r1c2, r5c8 => r1c8<>1
Finned Franken Swordfish: 4 c27b6/r48b3, fins at r1c2, r5c8 => r1c8<>4

Now, it appears that in Hoduko and my solver (BTW, I called it, MyDoku), one can see that each solver has consecutive algorithms that are similar, with a change of fish digit from 1 to 4, though the covers sets and the fins differ in both solvers.

Now, here's the thing, and the reason for the post, you will notice (if you care to examine) that both strategies, Hodoku and my solver, use identical sets (sectors) in their consecutive solving algorithms, both with candidates (fish digits) of 1 and 4. Either algorithm in each solver can be employed before the other, anyway, I wondered, is there a term for this type of fish mirroring with different digits?

Hope that makes sense.

[StrmCkr]

Make sure you have show more then one fish active in hodoku and enabled Siamese

If the base is identical and the cover has variation we call this SIAmese

Example:

A Skyscraper is a Siamese sashimi x wing

[Wepwawet]

Thanks for that snippet of information, you will notice that both fish found by my solver, the base, cover and fins are exactly identical, no variation whatsoever, whilst the Hoduko example does have variance in the covers. Does the term Siamese still apply, when the fish digit are different in both fish?

[StrmCkr]

Oh my bad, I didn't notice it was 2 different digits

That's a (#s) multi - "fish"
(n)digits with identical base/covers