Tag Archives: Empty Rectangle

Death Blossom Lite

This post describes and illustrates the Death Blossom with bv petals. It is most easily found as a secondary target while looking for XYZ-wings. Death Blossom Lite is a close, and easier to meet, cousin of the WXYZ-wing. First let’s … Continue reading

Posted in Advanced Solving, Sudoku Toolware | Tagged , , | 4 Comments

ER Winks, Forcing Chains and Irregular XYZ-wings

This post introduces “Empty Rectangle” weak links (ER winks) as a form of “seeing”. It is shown how the ER can be extended by a more general form, the forcing chain. It is also demonstrated that XYZ wings can be … Continue reading

Posted in Advanced Solving | Tagged , , | 3 Comments