The New Sudoku Players' Forum

[dpletcher]

Here is an original puzzle from page 108 of the Tammy
Seto puzzle book. It is an Intermediate, 5 flower difficulty.

*-------+------+-----*
| . 1 . | . . . | . 8 . |
| 2 . 5 | . . . | . . . |
| 3 8 6 | 9 4 . | . . . |
*------+------+------*
| 4 . 7 | 8 . 1 | . . . |
| . . . | 7 6 . | . 9 . |
| . . . | 4 . 5 | 2 . 1 |
*------+------+------*
| . . . | 2 1 . | 4 . . |
| . . . | . . . | 3 . 2 |
| . 2 . | . . . | . 1 . |
*------+------+------*

What next step am I missing here? There must be a hidden
triple or hidden Quad here somewhere but I don’t grasp the
concept of them. Could someone please give me a clue.


*-------------------------------------------------------------------------*
| 9 1 4 | 356 35 2 | 67 8 37 |
| 2 7 5 | 1 38 68 | 69 4 39 |
| 3 8 6 | 9 4 7 | 1 2 5 |
+---------------------------+------------------------+-------------------+
| 4 9 7 | 8 2 1 | 5 3 6 |
| 1 5 2 | 7 6 3 | 8 9 4 |
| 68 36 38 | 4 9 5 | 2 7 1 |
+---------------------------+------------------------+-------------------+
| 5678 36 389 | 2 1 68 | 4 56 789 |
| 78 4 1 | 56 78 9 | 3 56 2 |
| 5678 2 89 | 356 3578 4 | 79 1 789 |
*--------------------------------------------------------------------------*

[fermat]

Pay attention to the bottom row.

[keith]

... and then you can solve R8C5.

Keith