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Finned fish.

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wapati

Joined: 10 Jun 2008
Posts: 472
Location: Brampton, Ontario, Canada.

Posted: Tue Jan 13, 2009 5:15 pm Post subject: Finned fish.

This one is hard to avoid with only basic stuff. I don't do colors so I don't know about that.

Sashimi sword one-stepper.

Code:

. 3 5|. . 8|. 2 .
9 8 .|. . .|4 . .
2 . .|. . .|. 5 .
-----+-----+-----
. . .|9 . .|. . .
. . .|. . 2|3 8 4
5 . .|. 3 .|. . .
-----+-----+-----
. 4 .|. 9 .|7 . .
6 . 3|. 4 .|. . .
. . .|. 2 .|. . 9

Ditto.

Code:

. . 5|. . .|. . 3
. 9 .|2 . .|. 8 .
2 . 4|5 . .|. . .
-----+-----+-----
. 1 7|. . 9|5 . 2
. . .|. . .|. 1 .
. . .|8 . .|7 . 9
-----+-----+-----
. . .|9 . 3|2 . .
. 6 .|. 7 .|. . .
5 . .|4 . 8|. . 7

daj95376

Joined: 23 Aug 2008
Posts: 3854

Posted: Tue Jan 13, 2009 7:31 pm Post subject:

Code:

after basics on first puzzle
*--------------------------------------------------*
| 4 3 5 | 16 7 8 | 9 2 16 |
| 9 8 16 | 2 5 3 | 4 67 167 |
| 2 7 16 | 4 16 9 | 8 5 3 |
|----------------+----------------+----------------|
| 3 12 4 | 9 8 67 | 125 67 25 |
| 7 16 9 | 5 16 2 | 3 8 4 |
| 5 126 8 | 167 3 4 | 12 9 67 |
|----------------+----------------+----------------|
| 1 4 2 | 68 9 56 | 7 3 58 |
| 6 9 3 | 78 4 57 | 25 1 258 |
| 8 5 7 | 3 2 1 | 6 4 9 |
*--------------------------------------------------*

Code:

+-----------------------------------+
| . . . | 6 . . | . . 6 |
| . . 6 | . . . | . 6 6 |
| . . 6 | . 6 . | . . . |
|-----------+-----------+-----------|
| . . . | . . 6 | . 6 . |
| . 6 . | . 6 . | . . . |
| . 6 . | 6 . . | . . 6 |
|-----------+-----------+-----------|
| . . . | 6 . 6 | . . . |
| 6 . . | . . . | . . . |
| . . . | . . . | 6 . . |
+-----------------------------------+

Colors is sufficient and recommended.

Code:

Colors [r6c9]<>6

However, there are three (singly) finned Sashimi Swordfish present.

Code:

Sashimi Swordfish c358\r234 w/fin [r5c5] [r4c6]<>6

Sashimi Swordfish r147\c468 w/fin [r1c9] [r2c8]<>6
Sashimi Swordfish r147\c469 w/fin [r4c7] [r6c9]<>6

The last two Sashimi Swordfish can be combined into a Siamese Sashimi Swordfish.

Code:

Siamese Sashimi Swordfish r147\c46(89) [r2c8],[r6c9]<>6

Colors and Multiple Colors doesn't work on the second puzzle. However, I'll leave it for someone else.

Personal Note: I don't know how many members of this site are interested in puzzles that need/use Fish solutions.

arkietech

Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

Posted: Tue Jan 13, 2009 10:25 pm Post subject:

daj95376 wrote:

...Personal Note: I don't know how many members of this site are interested in puzzles that need/use Fish solutions.

Code:

*--------------------------------------------------*
| 4 3 5 |*16 7 8 | 9 2 *16 |
| 9 8 16 | 2 5 3 | 4 67 17-6 |
| 2 7 16 | 4 16 9 | 8 5 3 |
|----------------+----------------+----------------|
| 3 12 4 | 9 8 #67 | 125 #67 25 |
| 7 16 9 | 5 16 2 | 3 8 4 |
| 5 126 8 |*167 3 4 | 12 9 *67 |
|----------------+----------------+----------------|
| 1 4 2 | 68 9 56 | 7 3 58 |
| 6 9 3 | 78 4 57 | 25 1 258 |
| 8 5 7 | 3 2 1 | 6 4 9 |
*--------------------------------------------------*
Don't know what to call it?

I liked this one Very Happy

arkietech

Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

Posted: Tue Jan 13, 2009 10:45 pm Post subject:

Code:

*-----------------------------------------------------------*
| 167 8 5 | 67 9 1467 | 146 2 3 |
| 167 9 16 | 2 3 1467 | 146 8 5 |
| 2 3 4 | 5 8 16 | 9 7 16 |
|-------------------+-------------------+-------------------|
| 8 1 7 |*36 4 9 | 5 *36 2 |
| 369 45 369 | 367 2 567 | 68 1 468 |
| 36 *45 2 | 8 1 *56 | 7 36-4 9 |
|-------------------+-------------------+-------------------|
| 14 7 18 | 9 5 3 | 2 *46 1468 |
| 349 6 389 | 1 7 2 | 38 5 48 |
| 5 2 13 | 4 6 8 | 13 9 7 |
*-----------------------------------------------------------*
xy-chain does it

Ditto. Liked this one also Very Happy

Asellus

Joined: 05 Jun 2007
Posts: 865
Location: Sonoma County, CA, USA

Posted: Tue Jan 13, 2009 11:50 pm Post subject:

An even simpler one-step solution for the second puzzle is the following W-Wing:

Code:

*-----------------------------------------------------------*
| 167 8 5 | 67 9 1467 | 146 2 3 |
| 167 9 16 | 2 3 1467 | 146 8 5 |
| 2 3 4 | 5 8 16 | 9 7 16 |
|-------------------+-------------------+-------------------|
| 8 1 7 |w36 4 9 | 5 s36 2 |
| 369 45 369 | 367 2 567 | 68 1 468 |
|w36 45 2 | 8 1 #5-6 | 7 s364 9 |
|-------------------+-------------------+-------------------|
| 14 7 18 | 9 5 3 | 2 46 1468 |
| 349 6 389 | 1 7 2 | 38 5 48 |
| 5 2 13 | 4 6 8 | 13 9 7 |
*-----------------------------------------------------------*

The first puzzle can also be solved using a Finned X-Wing with fin transport. The FXW is in r16 with Fin r6c2. The fin can be transported to r1c4, thus eliminating the <6> at r7c4.

arkietech,
I don't know what to call your first solution either because I can't follow it. Can you explain how your markup leads to the elimination of <6> in r2c9?

arkietech

Joined: 31 Jul 2008
Posts: 1834
Location: Northwest Arkansas USA

Posted: Wed Jan 14, 2009 12:19 am Post subject:

Asellus wrote:

arkietech,
I don't know what to call your first solution either because I can't follow it. Can you explain how your markup leads to the elimination of <6> in r2c9?

if r1c9=1 r1c4=6 r6c4<>6 r6c9=6 => r2c9<>6
if r1c9=6 => r2c9<>6

Have I boo-booed again? Sad

Asellus

Joined: 05 Jun 2007
Posts: 865
Location: Sonoma County, CA, USA

Posted: Wed Jan 14, 2009 1:44 am Post subject:

arkietech wrote:

if r1c9=1 r1c4=6 r6c4<>6 r6c9=6 => r2c9<>6

The part in red doesn't work. How do you know that r6c2 isn't <6>?

It's safer in these cases to use Eureka notation to assure the implications alternate:
(6=1)r1c9 - (1=6)r1c4 - (6)r6c4=(6)???
The <6> that follows the <6> in r6c4 must have a strong inference link with this <6>. There is no such <6> in the grid.

storm_norm

Joined: 18 Oct 2007
Posts: 1741

Posted: Wed Jan 14, 2009 9:43 am Post subject:

Code:

.------------------.------------------.------------------.
| 167 8 5 | 67 9 1467 | 146 2 3 |
| 167 9 16 | 2 3 1467 | 146 8 5 |
| 2 3 4 | 5 8 16 | 9 7 16 |
:------------------+------------------+------------------:
| 8 1 7 | 36 4 9 | 5 36 2 |
| 39[6] 45 39[6]| 367 2 567 |-68 1 468 |
| 36 45 2 | 8 1 56 | 7 346 9 |
:------------------+------------------+------------------:
| 14 7 18 | 9 5 3 | 2 46 1468 |
|*349 6 *389 | 1 7 2 |*38 5 48 |
| 5 2 13 | 4 6 8 | 13 9 7 |
'------------------'------------------'------------------'

here is a uniqueness test solution for the second puzzle
if r5c13 is 6 then r5c7 is not 6
or
if r5c13 is not 6 then
the resulting type 4 UR on {3,9} allows us to remove the 3's in r8c13 to avoid the deadly pattern.
forces 3 into r8c7
forces 8 into r5c7... r5c7 is not 6

so either way, r5c7 is not 6.
----
the inference is on the 6's in r5c13 and the 3 in r8c7, both cannt be false at the same time or the DP is forced to exist
UR39[(6)r5c13 = (3)r8c7] - (8)r8c7 = (8)r5c7; r5c7 <> 6

wapati

Joined: 10 Jun 2008
Posts: 472
Location: Brampton, Ontario, Canada.

Posted: Wed Jan 14, 2009 4:26 pm Post subject:

UR1 and finned Jelly do this up nicely.

Code:

. . .|6 3 7|. . .
. . 3|9 . .|. . .
. 1 .|8 . 4|6 . .
-----+-----+-----
9 6 5|. . .|. . .
4 . .|. . 9|. 3 .
1 . 2|. 6 .|5 . .
-----+-----+-----
. . 6|. . 5|. 9 1
. . .|. 9 .|2 . .
. . .|. . .|8 . 5

(Yep, I know that remote pairs can be used instead.)

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