The New Sudoku Players' Forum

[jco]

Sadly the content on forbidding chains by Steve K was removed from the the site sudoku.com.au.
(the page on forbidding chains still exists but the content was removed)

As a matter of fact, all content produced by Steve K was removed from that site.

So, only here (NSPF) one can still find some of Steve K views on how to solve a sudoku puzzle.
One example of that can be found in the thread: "New Multi-Spoke Pattern" by Myth Jellies (Thu Jan 25, 2007).

EDIT: Thank you 1to9only !! (for the next post in this thread). After noticing what happened with that content, I forgot completely about that possibility!

[1to9only]

Sadly the content on forbidding chains by Steve K was removed from the the site sudoku.com.au.
(the page on forbidding chains still exists but the content was removed)

As a matter of fact, all content produced by Steve K was removed from that site.

The site has been captured by the Internet Archive Wayback Machine so those pages exist in archived form.
https://web.archive.org/web/20241013062152/https://sudoku.com.au/Sudoku-Tips-and-Strategies.aspx
The forum and tips do not appear in the 2025 captures.

[StrmCkr]

combined-overlapping-almost-locked-sets-rule-coals-t4863.html#p35018

you may also look into this method for finding als Dof > 1 which is essentially what the bispoked concepts was doing.

and almost-locked-rules-for-now-t2510.html for further reading about als in general.

all of this early work lead to more generalized concept for als xz,xy als chain rules and distributed disjointed subsets {als with dof x}, msls and multi fish.