The New Sudoku Players' Forum

[SteveG48]

Here's another from our local paper. I couldn't find a one-stepper for it:

Code: Select all

*-----------*
 |..5|21.|9.6|
 |.7.|...|...|
 |6..|..9|..2|
 |---+---+---|
 |..1|...|...|
 |2..|7.8|..9|
 |...|.5.|3..|
 |---+---+---|
 |...|9..|..8|
 |...|.6.|.3.|
 |5.7|..1|...|
 *-----------*


[JC Van Hay]

Basics to the end

[pjb]

Basics to end?? Am I missing something?
I agree Steve, the 2 at r6c6 is the only target for a one stepper and I couldn't find it. Only after a series of skyscrapers/fish, I reduced it to a one stepper state.
Phil

[SteveG48]

Basics to end?? Am I missing something?
I agree Steve, the 2 at r6c6 is the only target for a one stepper and I couldn't find it. Only after a series of skyscrapers/fish, I reduced it to a one stepper state.
Phil

I must be missing it, too. I went after the same target and got nowhere. I'm not a good angler, so I skipped fish and went to chains early, but it took a bit of effort.

[JC Van Hay]

After 15 Singles, 3 basic steps : for example,

Code: Select all

+---------------------+-------------------------+------------------+
| 3     (48)   5      | 2       1       7(4)    | 9       7(48)  6 |
| 9     7      2      | 568(4)  8-4     456     | 15(48)  1458   3 |
| 6     1      48     | 358(4)  378-4   9       | 57(48)  4578   2 |
+---------------------+-------------------------+------------------+
| 7     6-348  1      | 36(-4)  9       26-4(3) | 26(48)  2468   5 |
| 2     5      6-4(3) | 7       (+4-3)  8       | 16(-4)  16-4   9 |
| 8(4)  4689   4689   | 1       5       26-4    | 3       2468   7 |
+---------------------+-------------------------+------------------+
| 1     2346   46(3)  | 9       237-4   2457(3) | 2567    2567   8 |
| 8(4)  2489   489    | 58(4)   6       2457    | 257     3      1 |
| 5     2368   7      | 38      238     1       | 26      9      4 |
+---------------------+-------------------------+------------------+


Skyscraper(3C36) -> r5c5=4, r4c2≠3
Kite(8R1C7) -> r4c2≠8
Jellyfish(4R1C147) : r6c1=r8c1-r8c4=r32c4-r1c6=*Kite(r1c2*8,r234c7) -> r4c2≠4; r4c2=6 [Backdoor]; stte

[SteveG48]

Well, sure. If you define skyscrapers, kites, and jellyfish as basics. By that definition, just about all the puzzles posted here are basics to the end.