The New Sudoku Players' Forum

[BeautyRose]

HangXun Sudoku, I found this app's puzzles is very interesting, and I spent 1 hour to solve this puzzle, but I give up last.

https://play.google.com/store/apps/details?id=com.hangxun.sudoku

[BeautyRose]

play.google.com/store/apps/details?id=com.hangxun.sudoku

Features
1. Design each puzzle professionally, guarantee high quality of puzzles.
2. 6 difficulty levels of beginner to evil, for both kids and expert.
3. Use hints and checks for puzzles which are too hard.
4. Turn on note mode to make notes as on paper.
5. Daily Sudoku make you compete with global sudoku master.
6. Sudoku barrier with 1500 levels from easy to evil, designed elaborately.
7. Sudoku Editor and Sudoku Solver, create your own Sudoku.
8. Support sunset and midnight themes, make eyes feel more comfortable.

[BeautyRose]

good sudoku

[BeautyRose]

good and interesting sudoku

[Leren]

Code: Select all

*-----------*
|7..|..1|..4|
|..9|...|...|
|34.|..6|8..|
|---+---+---|
|..3|.5.|.9.|
|.72|...|45.|
|.1.|.8.|3..|
|---+---+---|
|..5|1..|.42|
|...|...|9..|
|1..|4..|..7|
*-----------*

Your first puzzle is incredibly easy and solves with singles only.

Code: Select all

*------------------------------------------------------------*
| 7    2568  68   | 23589  239   1      | 256   236    4     |
| 2568 2568  9    | 23578  2347  234578 | 12567 12367  1356  |
| 3    4    #1    | 2579   279   6      | 8     27-1  159-1  |
|-----------------+---------------------+--------------------|
| 468  68    3    | 267    5     247    | 1267  9      168   |
| 689  7     2    | 369   #1-369 39     | 4     5      68-1  |
| 4569 1     46   | 2679   8     2479   | 3     267    6     |
|-----------------+---------------------+--------------------|
| 689  3689  5    | 1      3679  3789   | 6     4      2     |
| 2468 2368  4678 | 235678 2367  23578  | 9     1368   13568 |
| 1    23689 68   | 4      2369  23589  | 56    368    7     |
*------------------------------------------------------------*

The diagram shows the pencilmark (PM) position at the end of a basic clue markoff. You can see that the 1 in r3c3 is the only one in Column 3 (or Box 1) and the 1 in r5c5 is the only 1 in Column 5 (or Box5).

I've made some resulting eliminations, and you'll find that these will unearth more and more naked or hidden singles until the puzzle is fully solved.

Code: Select all

*-----------*
|971|...|5..|
|.2.|8..|7..|
|.38|...|...|
|---+---+---|
|7.4|3.2|9.6|
|..3|4.5|...|
|2.6|1.9|3.5|
|---+---+---|
|...|...|83.|
|..9|..7|.5.|
|..7|...|129|
*-----------*

Your second puzzle is just as easy, from where you appear to be

Code: Select all

*----------------------------------------------------------*
| 9      7     1  | 26      2346     346  | 5   468   2348 |
| 456    2    #5  | 8       134569   1346 | 7   1469  134  |
| 456    3     8  |*7-2569  124569-7 146  | 246 1469  124  |
|-----------------+-----------------------+----------------|
| 7      158   4  | 3      #8        2    | 9   18    6    |
| 18     189   3  | 4       678      5    |#2   178   1278 |
| 2     #8     6  | 1       78       9    | 3   478   5    |
|-----------------+-----------------------+----------------|
| 1456   1456  25 | 2569    124569   146  | 8   3     47   |
| 13468  1468  9  | 26      123468   7    | 46  5    #4    |
| 34568  4568  7  | 56      34568    3468 | 1   2     9    |
*----------------------------------------------------------*

After a basic clue/solved cell markoff, I can see 5 naked singles in the cells marked with a #, and a hidden single 7 in r3c4, being the only 7 in Column 4, so I've just shown the eliminations for this one, marked *.

Leren

[ArkieTech]

I like. You need a way to enter external puzzles. Maybe a button to paste an 81 character string with zeros or periods representing unsolved cells. N

[Rutabaga]

Better remove the word "best" from the title for now. This app is lacking "digit first" input mode. I can't figure out how to select the level when starting a new game.