Great to hear from you again
Para! It does feel very killer like.
This is the decent chunks I could find but every avenue from here goes dead. Perhaps I'm missing some nonet wide overlap...anyway, really enjoyed trying. Perhaps
goooders (good to hear from you again too!) can help me out.
1. "45" on c3: innie/s = 3(1/2) = [3]/{12} = [1/3..]
1a. -> r2c3 from (123)
1b. and no 3 in r3c3
2. 4(1/2) at r1c3 can't be 4(2) = {13} (step 1)
2a. -> r1c3 = 4
3. 4(1/2) at r1c7 can't be 4(1) -> must be 4(2) = {13}: both locked for c7 & n3
4. 6(1/2/3) at r1c9 can't be 6(3) = {123} since only 1 of 1,3 is available
4a. can't be 6(2) = {15/24} since no 1 or 4 in r1c89
4b. -> r1c9 = 6
5. "45" on r1: 2/3/4 innies = 11 -> no 9 in r1c8
6. 11(2/3/4) at r2c9: can't be 11(4) = {1235}, blocked by r2c3
6a. = 11(2) = {29/47}
6b. or 11(3) which must have 1 or 3 for r2c7 = [1]{28} only
6c. = [2/4,4->7,7->4..]
6d. no 5 in r2c89
7. 13(2/3/4) at r1c8
7a. can't be 13(4) since min. r123c8 = {247} = 13 (can't have {245}[2])
7b. if 13(2), = [58]
7c. if 13(3), [2]{47} & [742] clash with step 6c; = [724] only works
7d. ie = [58/724] -> r1c8 from (57), r2c8 from (28)
7e. -> 11(2/3) at r2c9 (from step 6a,b)= [29]/[182]
7f. 2 locked for r2 and n3
7g. r2c9 = (29)
8. naked pair {13} at r2c37: both locked for r2
9. "45" on c7: 1,2,3 innies = 8:
9a. can't be 8(3) = {1..} since no 1
9b. can't be 8(2) since no 1,2,3,6 in r3c7 and no 1,3 in r4c7
9c. -> r3c7 = 8
10. r2c89 = [29]
10a. r13c8 = [74] step 7d
10c. r3c9 = 5
11. "45" on r1: 2,3 innies = 11 (can't be 4 innies since 7 is already in r1c8)
11a. can't be 11(2) because no 4 in r1c7
11b. = 11(3) = {13}[7]
11c. 1&3 locked in r1c67 for r1
Code:
.-------------------------------.-------------------------------.-------------------------------.
| 2589 2589 4 | 2589 2589 13 | 13 7 6 |
| 5678 5678 13 | 45678 45678 45678 | 13 2 9 |
| 123679 123679 12679 | 123679 123679 123679 | 8 4 5 |
:-------------------------------+-------------------------------+-------------------------------:
| 123456789 123456789 12356789 | 123456789 123456789 123456789 | 245679 135689 123478 |
| 123456789 123456789 12356789 | 123456789 123456789 123456789 | 245679 135689 123478 |
| 123456789 123456789 12356789 | 123456789 123456789 123456789 | 245679 135689 123478 |
:-------------------------------+-------------------------------+-------------------------------:
| 123456789 123456789 12356789 | 123456789 123456789 123456789 | 245679 135689 123478 |
| 123456789 123456789 12356789 | 123456789 123456789 123456789 | 245679 135689 123478 |
| 123456789 123456789 12356789 | 123456789 123456789 123456789 | 245679 135689 123478 |
'-------------------------------.-------------------------------.-------------------------------'
Cheers
Ed