- Code: Select all
*-----------*
|.4.|...|.6.|
|5..|7.4|..3|
|...|536|...|
|---+---+---|
|.68|9.1|54.|
|..1|...|9..|
|.59|4.3|68.|
|---+---+---|
|...|352|...|
|9..|1.7|..6|
|.3.|...|.2.|
*-----------*
Play/Print this puzzle online
*-----------*
|.4.|...|.6.|
|5..|7.4|..3|
|...|536|...|
|---+---+---|
|.68|9.1|54.|
|..1|...|9..|
|.59|4.3|68.|
|---+---+---|
|...|352|...|
|9..|1.7|..6|
|.3.|...|.2.|
*-----------*
*--------------------------------------------------------------------*
| 178 4 3 | 2 189 89 | 178 6 5 |
| 5 b129 6 | 7 b18 4 | 128 b19 3 |
| 1278 1279 27 | 5 3 6 | 12478 179 489 |
*----------------------+----------------------+----------------------|
| 3 6 8 | 9 27 1 | 5 4 27 |
| 4 27 1 | 68 68 5 | 9 3 27 |
| 27 5 9 | 4 27 3 | 6 8 1 |
*----------------------+----------------------+----------------------|
| 6 178 47 | 3 5 2 | 1478 179 489 |
| 9 a28 24 | 1 a4-8 7 | 3 5 6 |
| 17 3 5 | 68 4689 89 | 17 2 48 |
*--------------------------------------------------------------------*
.-----------------.--------------.-------------------.
| 178 4 3 | 2 189 89 | a178 6 5 |
| 5 19-2 6 | 7 18 4 | a128 19 3 |
| 1278 1279 b27 | 5 3 6 | 1478-2 179 489 |
:-----------------+--------------+-------------------:
| 3 6 8 | 9 27 1 | 5 4 27 |
| 4 27 1 | 68 68 5 | 9 3 27 |
| 27 5 9 | 4 27 3 | 6 8 1 |
:-----------------+--------------+-------------------:
| 6 178 b47 | 3 5 2 | a1478 179 489 |
| 9 28 24 | 1 48 7 | 3 5 6 |
| 17 3 5 | 68 4689 89 | a17 2 48 |
'-----------------'--------------'-------------------'
*---------------------------------------------------------------*
| 178 4 3 | 2 189 89 | 178 6 5 |
| 5 129 6 | 7 18 4 | 128 19 3 |
| 1278 1279 a27 | 5 3 6 |d1478-2 179 489 |
|--------------------+--------------------+---------------------|
| 3 6 8 | 9 27 1 | 5 4 27 |
| 4 27 1 | 68 68 5 | 9 3 27 |
| 27 5 9 | 4 27 3 | 6 8 1 |
|--------------------+--------------------+---------------------|
| 6 178 b47 | 3 5 2 |c1478 179 489 |
| 9 28 24 | 1 48 7 | 3 5 6 |
| 17 3 5 | 68 4689 89 | 17 2 48 |
*---------------------------------------------------------------*
+--------------+------------+---------------+
| 178 4 3 | 2 189 89 | 178 6 5 |
| 5 129 6 | 7 18 4 | 128 19 3 |
| 1278 1279 27 | 5 3 6 | 12478 179 489 |
+--------------+------------+---------------+
| 3 6 8 | 9 27 1 | 5 4 27 |
| 4 27 1 | 68 68 5 | 9 3 27 |
| 27 5 9 | 4 27 3 | 6 8 1 |
+--------------+------------+---------------+
| 6 178 47 | 3 5 2 | 1478 179 489 |
| 9 28 24 | 1 48 7 | 3 5 6 |
| 17 3 5 | 68 4689 89 | 17 2 48 |
+--------------+------------+---------------+
178 4 3 | 2 189 89 | 178 6 5
5 c129 6 | 7 a18 4 |b128 19 3
1278 1279 27 | 5 3 6 | 12478 179 489
------------------------+----------------------+---------------------
3 6 8 | 9 27 1 | 5 4 27
4 27 1 | 68 68 5 | 9 3 27
27 5 9 | 4 27 3 | 6 8 1
------------------------+----------------------+---------------------
6 178 47 | 3 5 2 | 1478 179 489
9 d28 24 | 1 4-8 7 | 3 5 6
17 3 5 | 68 4689 89 | 17 2 48
Marty R. wrote:
- Code: Select all
+--------------+------------+---------------+
| 178 4 3 | 2 189 89 | 178 6 5 |
| 5 129 6 | 7 18 4 | 128 19 3 |
| 1278 1279 27 | 5 3 6 | 12478 179 489 |
+--------------+------------+---------------+
| 3 6 8 | 9 27 1 | 5 4 27 |
| 4 27 1 | 68 68 5 | 9 3 27 |
| 27 5 9 | 4 27 3 | 6 8 1 |
+--------------+------------+---------------+
| 6 178 47 | 3 5 2 | 1478 179 489 |
| 9 28 24 | 1 48 7 | 3 5 6 |
| 17 3 5 | 68 4689 89 | 17 2 48 |
+--------------+------------+---------------+
Play this puzzle online at the Daily Sudoku site
DP (19)r23c28 internals
27r23c2=7r3c8
7r3c8-(7=*2)r3c3-(2=74)r78c3-(4=81)r82c5-(1=9*2)r2c82 contradiction => 27r23c2
Marty, I read your conclusion as saying that the cell pair r23c2 contains both a 2 and a 7. That can only happen if r2c2 is a 2 and r3c2 is a 7. Neither of those conclusions is true.