SSTS: 04/06/13

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SSTS: 04/06/13

Postby daj95376 » Sat Apr 06, 2013 5:38 pm

Sometimes, a Simple Sudoku solution may be the best choice. Anyone interested in tackling such puzzles?

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

Play this puzzle online at the Daily Sudoku site
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Re: SSTS: 04/06/13

Postby 7b53 » Sat Apr 06, 2013 5:44 pm

only if solvable without PMs... :D
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Re: SSTS: 04/06/13

Postby Marty R. » Sat Apr 06, 2013 7:57 pm

Sometimes, a Simple Sudoku solution may be the best choice. Anyone interested in tackling such puzzles?


Danny, what does that mean? What are "such puzzles"?
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Re: SSTS: 04/06/13

Postby JC Van Hay » Sat Apr 06, 2013 8:15 pm

#1. 11 Singles; LC(4); NT(135)r169c5; NT(235)r289c3
#2. XW(1R34); 11 Singles
#3. DP(35)r9c23.r23c9.r2c3.r3c2=4r3c2; ste
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Re: SSTS: 04/06/13

Postby daj95376 » Sat Apr 06, 2013 8:47 pm

Marty R. wrote:
Sometimes, a Simple Sudoku solution may be the best choice. Anyone interested in tackling such puzzles?


Danny, what does that mean? What are "such puzzles"?

Marty,

Simple Sudoku uses the following techniques when solving a puzzle: called SSTS for short

- Naked Single
- Hidden Single
- Naked Pair
- Hidden Pair
- Naked Triple
- Hidden Triple
- Naked Quad
- Hidden Quad
- Locked Candidate 1
- Locked Candidate 2

- X-Wing
- XY-Wing


- Colors
- Multi-Colors

- Swordfish

Except for general Coloring and Swordfish, I have some puzzles that can be solved using SSTS. This puzzle uses three non-basic SSTS steps: X-Wing, XY-Wing, and XY-Wing. I was undecided on whether or not to post it ... or others like it.

As JC demonstrated, you don't need to use all of the non-basic SSTS steps in your solution.

Before I delete SSTS puzzles from my small cache of puzzles, I decided to see how others felt.

Regards, Danny
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Re: SSTS: 04/06/13

Postby DonM » Sat Apr 06, 2013 11:19 pm

Marty R. wrote:
Sometimes, a Simple Sudoku solution may be the best choice. Anyone interested in tackling such puzzles?


Danny, what does that mean? What are "such puzzles"?


Don't feel bad, I wasn't familiar with the distinction either (I have heard of post-SSTS puzzles). The Simple Sudoku technique set has been looked on by some (including myself) as simply 'basic methods'. Any puzzles that can be solved with only these methods are likely going to be even easier than the current typical puzzles- sort of on a par with most newspaper puzzles.
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Re: SSTS: 04/06/13

Postby Marty R. » Sun Apr 07, 2013 12:02 am

Thanks for the info Danny.

Code: Select all
+-----------------+----------------+-----------+
| 12356  8    16  | 135  135 1235  | 7  9  4   |
| 2345   7    235 | 8    49  2359  | 6  1  235 |
| 12345  2345 9   | 6    47  12357 | 8  25 235 |
+-----------------+----------------+-----------+
| 15     59   8   | 2    79  1579  | 3  4  6   |
| 12346  2349 16  | 134  8   1369  | 5  7  12  |
| 123456 2345 7   | 1345 135 1356  | 12 8  9   |
+-----------------+----------------+-----------+
| 8      6    4   | 7    2   15    | 9  3  15  |
| 9      1    235 | 35   6   8     | 4  25 7   |
| 7      235  235 | 9    135 4     | 12 6  8   |
+-----------------+----------------+-----------+

Play this puzzle online at the Daily Sudoku site

X-Wing (1), r34c16

Code: Select all
+-------------+-----------+--------+
| 236  8   16 | 15 35 23  | 7 9 4  |
| 24   7   35 | 8  49 29  | 6 1 35 |
| 1345 345 9  | 6  47 137 | 8 2 35 |
+-------------+-----------+--------+
| 15   59  8  | 2  79 179 | 3 4 6  |
| 346  349 16 | 14 8  369 | 5 7 2  |
| 346  2   7  | 45 35 36  | 1 8 9  |
+-------------+-----------+--------+
| 8    6   4  | 7  2  5   | 9 3 1  |
| 9    1   2  | 3  6  8   | 4 5 7  |
| 7    35  35 | 9  1  4   | 2 6 8  |
+-------------+-----------+--------+

Play this puzzle online at the Daily Sudoku site

Kite (4) based in box 4 and extended.
-4r3c2=r5c2-r6c1=r6c4(4=1)r5c4-(1=5)r1c4-(5=3)r1c5-(3=2)r1c6-(2=9)r2c6-(9=4)r2c5=>r2c1,r3c5<>4

I like the way JC got rid of those 4s better. :idea:
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