tso wrote:Here's one that has a Swordfish fairly early on, and an X-wing near the end

Nice puzzle - learned about swordfish from MCC: I had messed up on understanding a swordfish.

So on row 5:

If r5c5=5 then r2c8=5 and r8c9=5

If r5c8=5 then r2c5=5

If r6c9=5 then r8c5=5

So on column 5, 5 must be in r5c5, r2c5 or r8c5

Therefore 5 can be eliminated from r3c5, r5c5 and r9c5.

So I solved the puzzle, but I never saw an X-Wing.

I would have said

Here's one which has a swordfish near the end

My progress was

1) Solved a bunch of easy stuff

2) Got helped to find a "locked candidates" which led to the swordfish

3) Got helped to see and understand the swordfish

4) Solved a bunch of easy stuff

No "Swordfish fairly early on, and an X-wing near the end".

Anyway, thanks everybody for the help.

Mac