My solution after singles:
- Code: Select all
+--------+-----------+-------------+
| 3 4 6| 8 7 1| 2 5 9 |
| 7 8 2| 6 5 9| 3 4 1 |
| 9 1 5| 2 3 4| 6 7 8 |
+--------+-----------+-------------+
| 1 6 8| 7 249 3|459 29 245 |
| 5 3 7| 49 249 6| 1 8 24 |
| 2 9 4| 5 1 8| 7 3 6 |
+--------+-----------+-------------+
| 4 27 1| 39 2689 5| 89 269 237 |
| 8 27 39| 1 2469 27|459 269 23457|
| 6 5 39|349 2489 27|489 1 2347|
+----------------------------------+
NPair (27)r8c26 => (-2)r8c5 (-2)r8c8 (-27)r8c9 | NPair (27)b8e69 => (-2)r7c5 (-2)r9c5 | NQuad (3489)r9c3457 => (-34)r9c9
Pointing, Claiming | (9)b6,r4 => (-9)r4c5
TUVWXYZ-Wing on {2345789} in b9e17,b9e46,r8e236 (-9)b9r8 => (-9)r8c8
singles until
- Code: Select all
+--------+----------+------------+
| 3 4 6| 8 7 1| 2 5 9 |
| 7 8 2| 6 5 9| 3 4 1 |
| 9 1 5| 2 3 4| 6 7 8 |
+--------+----------+------------+
| 1 6 8| 7 249 3|459 29 245 |
| 5 3 7| 49 249 6| 1 8 24 |
| 2 9 4| 5 1 8| 7 3 6 |
+--------+----------+------------+
| 4 27 1| 39 6 5| 8 29 237 |
| 8 27 39| 1 249 27|459 6 23457|
| 6 5 39|349 8 27| 49 1 2347|
+--------------------------------+
NPair (27)r8c26 => (-2)r8c5 (-27)r8c9 | NTriple (349)r9c347 => (-34)r9c9
Pointing, Claiming | (9)b6,r4 => (-9)r4c5
XY-chain [length 4] (4)(4=9)r8c5-(9=3)r8c3-(3=9)r9c3-(9=4)r9c7 => (-4)r8c7 (-4)r8c9 (-4)r9c4
r8c5=4 Hidden Single in row 8
stte