I propose this puzzle to your resolution. It is a little easier than the previous one.
..9...7...8.....9.7..391..8.6.....8..1..6..5...57.26.....2.3...5..8.9..637.....24
puzzle: Show
Good sudoku.
Robert
*--------------------------------------------------------------------*
| 1246 2345 9 | 456 258 4568 | 7 1346 123 |
| 1246 8 12346 | 456 25 7 | 12345 9 123 |
| 7 245 246 | 3 9 1 | 245 46 8 |
|----------------------+----------------------+----------------------|
| 249 6 2347 | 1459 135 45 | 1234 8 12379 |
| 2489 1 2347 | 49 6 48 | 234 5 2379 |
| 489 349 5 | 7 138 2 | 6 134 139 |
|----------------------+----------------------+----------------------|
| 1469 49 146 | 2 47 3 | 8 17 5 |
| 5 24 124 | 8 47 9 | 13 137 6 |
| 3 7 8 | 156 15 56 | 9 2 4 |
*--------------------------------------------------------------------*
(2-37)r45c3=(3)r6c2*
||
(2)r3c3---(6)r3c3=r3c8-(4)r3c8
|| | ||
|| ---------------(4)r3c3
|| ||
|| (4)r3c7-r13c8=r6c8*
|| ||
|| (4)r3c2*
||
(2)r8c3-(2=4)r8c2*
(1-5)r2c7=r3c7-r3c2=(5-3)r1c2=r6c2*
||
(1)r4c7-(1=9)r6c9*
||
(1-3)r8c7=r8c8-r6c8=r6c2*
(2-37)r45c3=(3)r6c2*
||
(2)r3c3-(6)r3c3=r3c8-(4)r3c8 (1)r1c8-(1=7)r7c8-(47=9)r7c25*
|| | || ||
|| -------------(4)r3c3 (3)r1c8-r1c2=r6c2*
|| || ||
|| (4)r3c7-r13c8=r6c8*—-(4=6)r3c8-(6)r1c8
|| || | ||
|| (49)r37c2* -----------(4)r1c8
||
(2)r8c3-(2=49)r78c2*
+------------------------+----------------------+-------------------------+
| 1246 2345 9 | 456 258 4568 | 7 1346 123 |
| 1246 8 12346 | 456 25 7 | 12345 9 123 |
| 7 245 246 | 3 9 1 | 245 46 8 |
+------------------------+----------------------+-------------------------+
| 249 6 2347 | 1459 135 45 | 1234 8 12379 |
| 2489 1 2347 | 49 6 48 | 234 5 2379 |
| 489 349 5 | 7 138 2 | 6 134 139 |
+------------------------+----------------------+-------------------------+
| 1469 49 146 | 2 47 3 | 8 17 5 |
| 5 24 124 | 8 47 9 | 13 137 6 |
| 3 7 8 | 156 15 56 | 9 2 4 |
+------------------------+----------------------+-------------------------+
+-----------------------+----------------------+------------------------+
| 146 f245-3 9 | 456 258 4568 | 7 c1346 123 |
| 146 8 1346 | 456 25 7 | 2345 9 123 |
| 7 e245 e246 | 3 9 1 | d245 c46 8 |
+-----------------------+----------------------+------------------------+
| 29 6 347 | 1459 135 45 | 1234 8 12379 |
| 289 1 347 | 49 6 48 | 234 5 2379 |
| 89 a34 5 | 7 138 2 | 6 b134 19 |
+-----------------------+----------------------+------------------------+
| 146 9 146 | 2 47 3 | 8 17 5 |
| 5 24 124 | 8 47 9 | 13 137 6 |
| 3 7 8 | 156 15 56 | 9 2 4 |
+-----------------------+----------------------+------------------------+
Cenoman wrote:
- Code: Select all
+-----------------------+----------------------+------------------------+
| 146 f245-3 9 | 456 258 4568 | 7 c1346 123 |
| 146 8 12346 | 456 25 7 | 2345 9 123 |
| 7 e245 e246 | 3 9 1 | d245 c46 8 |
+-----------------------+----------------------+------------------------+
| 29 6 347 | 1459 135 45 | 1234 8 12379 |
| 289 1 347 | 49 6 48 | 234 5 2379 |
| 89 a34 5 | 7 138 2 | 6 b134 19 |
+-----------------------+----------------------+------------------------+
| 146 9 146 | 2 47 3 | 8 17 5 |
| 5 24 124 | 8 47 9 | 13 137 6 |
| 3 7 8 | 156 15 56 | 9 2 4 |
+-----------------------+----------------------+------------------------+
6. (3=4)r6c2 - r6c8 = r13c8 - (4=2|5)r3c7 - (25)r3c23 = (2|5)r1c2 => -3 r1c2; ste
totuan wrote:Hi Cenoman,
A nice solution!
totuan wrote:Cenoman wrote:6. (3=4)r6c2 - r6c8 = r13c8 - (4=2|5)r3c7 - (25)r3c23 = (2|5)r1c2 => -3 r1c2; ste
For your step 6, I cannot see how it work... It need to require more stronglinks or steps to eliminate candidates before this step or I miss some things
totuan