I've gotten the Kunoichi as far as working out all of the pencil marks. It was a little easier than I expected, but I tried a different method this time that will hopefully eliminate exasperating mistakes.
Here are the pencil marks for the five grids, if someone is willing to double-check them for me:
Grid #1:
Code:
.-------------------------------.-------------------------------.-------------------------------.
| 2 479 6 | 478 1 4789 | 3 49 5 |
| 48 1 489 | 3 24689 5 | 2469 7 2469 |
| 3 4579 4579 | 2467 24679 24679 | 12469 12469 8 |
:-------------------------------+-------------------------------+-------------------------------:
| 1458 2 145789 | 145678 456789 146789 | 456789 3 4679 |
| 6 4579 45789 | 24578 2345789 24789 | 245789 24589 1 |
| 1458 3 145789 | 1245678 2456789 1246789 | 2456789 245689 24679 |
:-------------------------------+-------------------------------+-------------------------------:
| 7 456 1245 | 124568 234568 123468 | 1245689 1245689 23469 |
| 145 8 1245 | 9 234567 123467 | 124567 12456 23467 |
| 9 456 3 | 1245678 245678 124678 | 1245678 124568 2467 |
'-------------------------------.-------------------------------.-------------------------------'
Grid #2:
Code:
.-------------------------------.-------------------------------.-------------------------------.
| 4 1357 8 | 1357 9 1357 | 2 3 6 |
| 357 9 357 | 2 3457 6 | 3458 1 348 |
| 2 1356 1356 | 13458 1345 13458 | 3458 349 7 |
:-------------------------------+-------------------------------+-------------------------------:
| 1356789 4 135679 | 1356789 13567 135789 | 13678 2 138 |
| 135678 1235678 123567 | 1345678 1234567 134578 | 134678 3467 9 |
| 136789 123678 123679 | 1346789 13467 134789 | 134678 5 1348 |
:-------------------------------+-------------------------------+-------------------------------:
| 1356789 135678 1345679 | 1345679 134567 134579 | 13467 3467 2 |
| 135679 13567 1345679 | 1345679 134567 2 | 13467 8 134 |
| 1367 12367 123467 | 13467 8 1347 | 9 3467 5 |
'-------------------------------.-------------------------------.-------------------------------'
Grid #3:
Code:
.-------------------------------.-------------------------------.-------------------------------.
| 2456789 1246789 2456789 | 245689 24679 135678 | 1235678 123567 1345678 |
| 234568 123468 1245689 | 1245689 23469 136789 | 123678 123679 1346789 |
| 234567 123467 124567 | 12456 234567 1356789 | 135678 1345679 1345679 |
:-------------------------------+-------------------------------+-------------------------------:
| 245678 124678 1245678 | 124568 2467 135679 | 13567 1345679 1345679 |
| 34679 346789 34789 | 3479 123456789 1367 | 12367 123467 13467 |
| 1345679 1345679 34579 | 134579 3468 245689 | 2345689 234689 234568 |
:-------------------------------+-------------------------------+-------------------------------:
| 1345679 1345679 234579 | 1234579 34678 45689 | 345689 346789 345678 |
| 1234679 134789 234789 | 123479 14678 1245689 | 1245689 246789 245678 |
| 2345679 345789 2345789 | 234579 13468 124568 | 1234568 1234689 1234568 |
'-------------------------------.-------------------------------.-------------------------------'
Grid #4:
Code:
.-------------------------------.-------------------------------.-------------------------------.
| 5 3467 1 | 3679 2 34679 | 346789 34789 3479 |
| 679 2 34679 | 8 345679 1345679 | 1345679 34579 134579 |
| 8 3467 34679 | 135679 345679 1345679 | 1345679 234579 1234579 |
:-------------------------------+-------------------------------+-------------------------------:
| 2679 5 234679 | 123679 34679 1234679 | 134789 234789 123479 |
| 1 3467 234679 | 235679 3456789 2345679 | 345789 2345789 234579 |
| 279 8 23479 | 123579 34579 1234579 | 134579 6 1234579 |
:-------------------------------+-------------------------------+-------------------------------:
| 3 167 2567 | 25679 5679 25679 | 4579 4579 8 |
| 267 9 2567 | 4 3567 8 | 357 1 357 |
| 4 7 8 | 3579 1 3579 | 2 3579 6 |
'-------------------------------.-------------------------------.-------------------------------'
Grid #5:
Code:
.-------------------------------.-------------------------------.-------------------------------.
| 3468 245689 2345689 | 234689 234568 2345689 | 7 456 1 |
| 34678 45689 345689 | 346789 345678 1 | 5689 2 569 |
| 14678 1245689 1245689 | 246789 245678 245689 | 5689 456 3 |
:-------------------------------+-------------------------------+-------------------------------:
| 13468 124568 1234568 | 1234689 1234568 2345689 | 123569 7 2569 |
| 9 12568 123568 | 12368 1235678 23568 | 12356 1356 4 |
| 1346 7 123456 | 123469 123456 234569 | 123569 8 2569 |
:-------------------------------+-------------------------------+-------------------------------:
| 2 14689 14689 | 13468 13468 3468 | 1356 1356 7 |
| 1468 3 1468 | 5 12468 7 | 126 9 26 |
| 5 16 7 | 1236 9 236 | 4 136 8 |
'-------------------------------.-------------------------------.-------------------------------'
Now, onward to solving!