Memorize six simple patterns and be able to solve all the puzzles all of the time!
So once you know how to solve down you need to memorize six patterns:
- Patterns 1 to 5 describe all 3x3 puzzles
- No pattern needed for 4x4 as these always solve down
- 5x5 puzzles use the same solution patterns as for 3x3s
- And the 6th pattern is to duplicate unlit squares from the bottom row to the top row for all circular puzzles
For more info http://myddo.webs.com/shroudguide/puzzlesixpattern.html
If this does not make sense to you or you would like further clarification, there is a complete step-by-step guide here http://myddo.webs.com/shroudguide/puzzle.html