The New Sudoku Players' Forum

by **wapati** » Mon Mar 19, 2007 4:30 am

This is pretty nasty. (Or worse.)
Yep, I am sure.

Code: Select all: 5 1 .|2 . .|. 7 . 8 . 9|. . .|3 . 5 . 4 7|. . .|. 9 . -----+-----+----- 9 . .|5 4 .|. . . . . .|1 7 2|. . . . . .|. 9 8|. . 4 -----+-----+----- . 8 .|. . .|7 5 . 4 . 5|. . .|8 . 9 . 9 .|. . 5|. 4 1

by **wapati** » Tue Mar 20, 2007 8:40 am

A nice mixture of techniques. I need fins to solve it.
Can Multi Colors finish this one, anyone?

Code: Select all: . 4 .|. . .|. 9 . . 9 1|. . .|6 7 . 7 . 5|. . .|2 . 4 -----+-----+----- . . .|. 5 .|. . . . 6 .|. . .|. 5 . . 5 .|9 8 1|. 6 . -----+-----+----- . . .|3 . 8|. . . . . 8|5 . 7|4 . . 4 7 .|. 1 .|. 8 5

by **daj95376** » Wed Mar 21, 2007 12:04 am

wapati wrote:A nice mixture of techniques. I need fins to solve it.
Can Multi Colors finish this one, anyone?

Code: Select all
. 4 .|. . .|. 9 . . 9 1|. . .|6 7 . 7 . 5|. . .|2 . 4 -----+-----+----- . . .|. 5 .|. . . . 6 .|. . .|. 5 . . 5 .|9 8 1|. 6 . -----+-----+----- . . .|3 . 8|. . . . . 8|5 . 7|4 . . 4 7 .|. 1 .|. 8 5

Code: Select all: 42x Naked Single 10x Hidden Single 7x Naked Pair 4x Naked Triple 2x Naked Quad 3x Locked Candidate (1) 2x Locked Candidate (2) 1x X- Wing 1x XY- Wing 2x XYZ-Wing 1x Unique Rectangle Type 1 1x Sashimi X-Wing 1x Turbot Fish 1x finned Swordfish 1x Skyscraper

Code: Select all: # Skyscraper c35 => [r2c5]=2 *-----------------------------------* | 2 . *2 | . . -2 | . . . | | -2 . . | . *2 . | . . . | | . . . | . . . | 2 . . | |-----------+-----------+-----------| | 2 . . | 2 . 2 | . . 2 | | . . *2 | 2 *2- . | . . 2 | | 2 . . | . . . | . . 2 | |-----------+-----------+-----------| | . 2 . | . . . | . 2 . | | . 2 . | . . . | . 2 . | | . . . | 2 . 2 | . . . | *-----------------------------------*

Code: Select all: # -or- Multiple Colors # P(ink) sees B(lue) and G(reen) # forces A(mber) to be true *-----------------------------------* | 2 . 2B | . . -2P | . . . | | -2P . . | . 2A . | . . . | | . . . | . . . | 2 . . | |-----------+-----------+-----------| | 2 . . | 2 . 2 | . . 2 | | . . 2G | 2 -2P . | . . 2 | | 2 . . | . . . | . . 2 | |-----------+-----------+-----------| | . 2 . | . . . | . 2 . | | . 2 . | . . . | . 2 . | | . . . | 2 . 2 | . . . | *-----------------------------------*

by **Para** » Wed Mar 21, 2007 1:09 am

Hi

I was just curious.
It says there 1x sashimi x-wing and 1x skyscraper. Aren't those two the same technique??
At least that is what i always thought.

Code: Select all: # Skyscraper c35 => [r2c5]=2 *-----------------------------------* | 2 . #2 | . . -2 | . . . | | -2 . * | . *2 . | . . . | | . . . | . . . | 2 . . | |-----------+-----------+-----------| | 2 . . | 2 . 2 | . . 2 | | . . *2 | 2 *2- . | . . 2 | | 2 . . | . . . | . . 2 | |-----------+-----------+-----------| | . 2 . | . . . | . 2 . | | . 2 . | . . . | . 2 . | | . . . | 2 . 2 | . . . | *-----------------------------------*

Because if you look at it this way it is a sashimi x-wing.

Correct me if i am wrong.

greetings

Para

by **wapati** » Wed Mar 21, 2007 2:58 am

Para wrote:Hi

I was just curious.
It says there 1x sashimi x-wing and 1x skyscraper. Aren't those two the same technique??
At least that is what i always thought.
Para

In defense of the person who listed those, he did not mean the same pattern at the same point of the puzzle.
There are always (except perhaps the absolute hardest) several paths to the solution. (I accept that there may be only one first step.)

Turbot is the first name (that I am aware of) assigned to the pattern that I think of as "skyscraper" which is certainly a sashimi x-wing as well as a host of chains.

Yep, you are not mostly wrong!

I wonder how long "always thought" can survive about anything.
I am guessing not long here!

by **Para** » Wed Mar 21, 2007 3:11 am

wapati wrote:In defense of the person who listed those, he did not mean the same pattern at the same point of the puzzle.
There are always (except perhaps the absolute hardest) several paths to the solution. (I accept that there may be only one first step.)

Oh, yes. I got that far. I was just trying to understand the terminology properly.

Yeah well always has been about 1 and a half month for me now.

Para

by **wapati** » Wed Mar 21, 2007 3:16 am

Para wrote:Yeah well always has been about 1 and a half month for me now.

Para

Fresh blood is welcome!!

by **daj95376** » Wed Mar 21, 2007 3:54 am

For eliminations on <2>.

Option 1:

A) A Sashimi X-Wing elimination for either [r1c6] or [r2c1] ... but not both.
B) [r2c5]=2 eliminates [r5c5] and either [r2c1] or [r1c6], respectively.

Option 2:

A) A Skyscraper elimination for [r1c6] and [r2c1].
B) [r2c5]=2 eliminates [r5c5].

I chose Option 2 !!!

The Sashimi X-Wing in my list was for an important elimination on <3>.

Bottom Line: A Skyscraper can be viewed as two, concurrent, 1-fin cell Sashimi X-Wings in the same rows/columns. It saves time!

by **wapati** » Wed Mar 21, 2007 5:07 am

daj95376 wrote:Bottom Line: A Skyscraper can be viewed as two, concurrent, 1-fin cell Sashimi X-Wings in the same rows/columns. It saves time!

And was described way before fins, and sashimi anything.

Turbots are hard to spot, hard to ignore!

by **wapati** » Fri Mar 23, 2007 7:41 am

Some fins, odds and ends and a UR and a bug. Kinda fun!

I should have saved this for Easter, it looks like a bunny head.

Code: Select all: 94.....13 ......... .83...46. ..6...7.. ...915... .1.7.4.2. ...2.3... 23..9..78 ..1.5.3..

by **wapati** » Fri Mar 23, 2007 9:07 am

There is at least one jellyfish here. I say that because SQ and SE both see one, just not the same one.

Oh, and lots of other patterns, some with fins.

Code: Select all: . 5 . | . . . | . 9 . 6 . . | . . . | . . 7 . 9 . | 2 . 7 | . 3 . --------------------- 7 . . | 3 . 8 | . . 2 9 . . | 1 . 5 | . . 3 . . 1 | . 7 . | 4 . . --------------------- 5 . . | 8 . 3 | . . 9 . . 2 | . 9 . | 7 . . . . . | . 5 . | . . .

by **wapati** » Fri Mar 23, 2007 9:52 pm

Code: Select all: . . 6|. . .|1 . . . 4 2|6 . 8|5 3 . 1 . .|3 . 9|. . 6 -----+-----+----- . 2 8|. . .|7 4 . . . 4|. . .|8 . . . . .|. 5 .|. . . -----+-----+----- . . .|. . .|. . . . 3 .|. 8 .|. 2 . . . .|7 . 5|. . .

This is a fun one. No Fins, very hard. No big fish, sorry.

by **wapati** » Mon Mar 26, 2007 1:26 am

I'm thinking that you will need to find a finned jellyfish.
Oh, and a bunch more patterns.

Code: Select all: . . .|. 3 .|. . . 1 8 .|6 . 2|. 9 3 . 3 .|1 . 8|. 6 . -----+-----+----- . 2 .|. 1 .|. 8 . . . .|2 . 6|. . . 6 . .|. . .|. . 5 -----+-----+----- 9 . 7|. 4 .|3 . 2 . . 2|. . .|8 . . . 1 .|3 . 9|. 7 .

by **wapati** » Mon Mar 26, 2007 2:56 am

A true Jelly, is what I need.

Your chow may vary?

Code: Select all: 7 4 .|9 . 1|. . 5 3 9 .|7 . .|. . . . . .|. . 4|. . . -----+-----+----- 6 1 .|. 5 .|3 . 7 . . .|6 . 7|. . . 9 . 7|. 4 .|. 1 6 -----+-----+----- . . .|5 . .|. . . . . .|. . 8|. 9 1 5 . .|1 . 6|. 8 3

by **wapati** » Mon Mar 26, 2007 3:27 am

Oww.

SE and SQ think you will be very busy. SA and SS quit.

Code: Select all: . 9 6 | 3 . 2 | . . . 7 . . | . . 9 | . . . 2 . . | 7 5 . | 6 . . --------------------- 9 . 2 | . . . | . 3 7 . . 8 | . . . | 2 . . 3 7 . | . . . | 8 . 1 --------------------- . . 9 | . 2 1 | . . 5 . . . | 8 . . | . . 3 . . . | 9 . 5 | 1 2 .

I doubt that I will solve this, at first try.
When I get stuck (I use paper) that puzzle goes to the back.
I often solve "stuck" puzzles later.

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