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Results tagged with sudoku
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user 87475
A Sudoku is a puzzle consisting of a grid to be filled with symbols, such that each constraining unit contains each symbol exactly once. The typical example is a 9x9 square to be filled with the numbers 1 to 9, where the constraining units are rows, columns, and 3x3 blocks.
0
votes
Another Colombian Sudoku
We will use chess notation. Columns a to f from left to right
and row 1 to 6 from bottom to top. In the board, digits
with <> are givens, digits with ** are derived digits.
No candidates will be used. …
- 470
1
vote
Next Sudoku Number
This is a formidable puzzle. Fortunately OP's request is to prove the next digit. The grid with all candidates is needed for this.
I use chess notation: rows 1 to 9 (bottom to top) and columns a to i …
- 470
0
votes
Impasse with this Sudoku puzzle
Consider the following grid, noticing the way to identify rows/columns.
.-----------------------------------------------------------.
| 17 6 4 | 2 157 57 | 8 9 3 | 9
| …
- 470
1
vote
What technique can be used to solve this 6x6 sudoku?
Using chess notation (rows 1 to 6 bottom to top and columns a to f, left to right)
.---------------------------------.
| 145 6 14 | 135 2 134 | 6
| 1245 3 124 | 15 6 14 | 5
|---- …
- 470
1
vote
Accepted
A Colombian Jigsaw Sudoku
In this situation, (5)h5 and
<5>g5 imply (by Jigwaw sudoku rules) that (5) must be true at i8 or i9. … By Jigsaw Sudoku rules, (6)h6 is false, and so (6)b6 must be true [MC at Row 6].
But (<1>)f4,(1)g9, (6)f5 [HS] and Jigsaw rules imply that (1)d5 and
(6)f5 are HS in Row 5. …
- 470