Methodoku Online is a web version of Mark Davies' popular ringing puzzle, which you can purchase here.
Created by Thomas Haslam, who quite frankly got bored of doing the daily puzzle after the first few months and is perpetually surprised that people are still regularly playing.
This increases the number of spaces bells are allowed to move horizontally between rows
This is when a bell appears in the first column
This is when a bell appears in the last column
A "place" is when a bell does not change position between rows. A "Nths place" is when this happens in the Nth column
A long place is 2 or more places in a row
A direction change is when a bell changes which horizontal direction it goes between rows. If non-place direction changes are not allowed, bells cannot change direction without making a place in between.
Note: When jump changes are allowed, bells are allowed to change from jumping two bells rightwards to one bell rightwards, since this doesn't change which direction they are going.
A true method cannot have any repeated rows.
Note: this rule won't appear in current puzzles since it was judged too annoying to keep track of.