The Activity Mom - Free Printable Color Sudoku Puzzles for ... from activity-mom.com
A chain of conjugate pairs exists when multiple conjugate pairs are linked together. When you find a chain of conjugate pairs, you might be able to use simple coloring to remove candidates. Colors are used to indicate the opposing sides of conjugate pairs to allow potential candidate removal to be identified.
Can you eliminate all of the red 2s in sudoku?
Which is part of a chain in sudoku? In column g, the 3's are limited to two locations, g4 and g8. Although it is an advanced solving technique, many player know how to use it because it is supported by the popular simple sudoku program. Next, start from one of the colored numbers and look for a conjugate pair that it chains with.
