After basics,
- Code: Select all
,-----------------------------------------------------------------,
| 45-9 28 E 45(9) | 3 6 1 |D 47(9) 2458 24578 |
| 459 1 3 | 2 8 7 |C(69)-4 45 456 |
| 28 6 7 | 5 4 9 | 3 1 28 |
|------------------------+-------------+--------------------------|
| 7 9 2 | 6 1 5 | 8 34 34 |
| 3 4 8 | 9 7 2 | 5 6 1 |
| 6 5 1 | 4 3 8 | 2 7 9 |
|------------------------+-------------+--------------------------|
| 58 378 A 5(6) | 1 2 4 |B(6)7 9 3578-6 |
| 2489 278 F(69)-4 | 78 5 3 | 1 248 24678 |
| 1 2378 45 | 78 9 6 | 47 23458 234578 |
'-----------------------------------------------------------------'
1. Loop (6)r7c3 - r7c7 = (6-9)r2c7 = r1c7 - r1c3 = (9-6)r8c3 = (6)r7c3
=> -6 r7c9, -4 r2c7, -9 r1c1, -4 r8c3
---
- Code: Select all
,-----------------------------------------------------------------------------,
| 5-4 28 *459 | 3 6 1 |*479 258-4 2578-4 |
| 459 1 3 | 2 8 7 | 69 45 456 |
| 28 6 7 | 5 4 9 | 3 1 28 |
|-------------------------+-------------------------+-------------------------|
| 7 9 2 | 6 1 5 | 8 34 34 |
| 3 4 8 | 9 7 2 | 5 6 1 |
| 6 5 1 | 4 3 8 | 2 7 9 |
|-------------------------+-------------------------+-------------------------|
| 58 378 56 | 1 2 4 | 67 9 3578 |
| 2489 278 69 | 78 5 3 | 1 248 24678 |
| 1 2378 *45 | 78 9 6 |*47 2358-4 23578-4 |
'-----------------------------------------------------------------------------'
2. X-wing (4) c37\r19 => -4 r1c1, r1c89, r9c89 [7 placements]
---
- Code: Select all
,--------------------------------------------------,
| 5 8 49 | 3 6 1 | 49 2 7 |
| 49 1 3 | 2 8 7 | 69 45 456 |
| 2 6 7 | 5 4 9 | 3 1 8 |
|----------------+----------------+----------------|
| 7 9 2 | 6 1 5 | 8 34 d34 |
| 3 4 8 | 9 7 2 | 5 6 1 |
| 6 5 1 | 4 3 8 | 2 7 9 |
|----------------+----------------+----------------|
| 8 c37 56 | 1 2 4 |b67 9 c35 |
| 49 d'27 69 | 78 5 3 | 1 48 a6-24 |
| 1 237 45 | 78 9 6 | 47 358 235 |
'--------------------------------------------------'
3.
(3=4)r4c9
/
(6)r8c9 = (6-7)r7c7 = (73)r7c9
\
(7=2)r8c2
=> - 24 r8c9; ste