After basics
- Code: Select all
.---------------------------------------------------------------------.
| 1 57 57 | 2 3 6 | 4 89 89 |
| *348-9 f29 2489 | 5 1 *49 |e23 6 7 |
| *34-9 6 249 | 8 7 *49 | 5 23 1 |
|-----------------------+----------------------+----------------------|
| a89 4 6 | 3 289 7 | 1 5 289 |
| 5 239 289 | 6 2489 1 | 289 7 23489 |
| 7 1239 1289 | 49 2489 5 | 6 2489 23489 |
|-----------------------+----------------------+----------------------|
| 6 8 3 | 49 49 2 | 7 1 5 |
|ba49 15 15 | 7 6 3 | 289 2489 2489 |
| 2 c79 c479 | 1 5 8 |d39 349 6 |
'---------------------------------------------------------------------'
1. UR(49)r23c16 using externals
(9)r48c1=UR(49)r23c16=(4)r8c1 - (4=79)r9c23 - (9=3)r9c7 - (3=2)r2c7 - (2=9)r2c2
=> -9 r23c1
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- Code: Select all
.--------------------------------------------------------------------.
| 1 57 57 | 2 3 6 | 4 89 89 |
| 348 29 2489 | 5 1 49 |d23 6 7 |
|b34 6 249 | 8 7 49 | 5 c23 1 |
|----------------------+----------------------+----------------------|
| 89 4 6 | 3 289 7 | 1 5 289 |
| 5 239 289 | 6 2489 1 | 289 7 23489 |
| 7 1239 1289 | 49 2489 5 | 6 2489 23489 |
|----------------------+----------------------+----------------------|
| 6 8 3 | 49 49 2 | 7 1 5 |
|a49 15 15 | 7 6 3 | 28-9 248-9 248-9 |
| 2 7-9 47-9 | 1 5 8 |d39 349 6 |
'--------------------------------------------------------------------'
2. (9=4)r8c1 - (4=3)r3c1 - (3)r3c8 - (3)r2c7 - (3=9)r9c7 => -9 r9c23, -9 r8c789 [10 placements]
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- Code: Select all
.--------------------------------------------------------------------.
| 1 5 7 | 2 3 6 | 4 89 89 |
| 34 c29 8 | 5 1 49 |b23 6 7 |
| 34 6 d29 | 8 7 49 | 5 23 1 |
|----------------------+----------------------+----------------------|
| 8 4 6 | 3 29 7 | 1 5 29 |
| 5 239 2-9 | 6 2489 1 |a289 7 23489 |
| 7 239 1 | 49 2489 5 | 6 2489 23489 |
|----------------------+----------------------+----------------------|
| 6 8 3 | 49 49 2 | 7 1 5 |
| 9 1 5 | 7 6 3 |a28 248 248 |
| 2 7 4 | 1 5 8 | 39 39 6 |
'--------------------------------------------------------------------'
3. (9=82)r58c7 - (2)r2c7 = (2)r2c2 - (2=9) => -9 r5c3; ste
EDIT: Later I noticed that
1. (9=4)r8c1 - (4)r9c3 = (4-3)r9c8 = (3-2)r3c8 = (2)r3c3 - (2=9)r2c2 => -9 r12c1, r9c2 [6 placements]
is possible instead of the UR move 1, but I could not find any gain from the additional elimination (so, same moves 2,3).