... by: Pieter, Newtown, Australia
In the first Empty Rectangle Example you say "Here is a real example based on the centre box. ..... The Empty Rectangle Intersection is the orange cell on E6...." I believe you mean the orange (brown?) cell on D6.
Also in your explanations at the top, last 2 grids, you refer to certain cells (i.e. C2, C8, A7, A4) but the grids have no Rol/Col markings. Minor, I agree, but my tired brain noticed. :-)
... by: Roman M
The power of ERs can be illustrated by using your examples in your Franken Sword-Fish strategy pdf,namely ,RHS diagrams 3 and 5.
By looking at the conjugate pair E5 and H5 , and the consequences of one and other being true,
and applying "intersection removal",all the red Xs will result - the Franken fin is not needed.
... by: Roman
In your Single Chain PDF, Fig. 1 of the 5-bi-location links,
also has a good example of an ER - based on the G3-G7
link, eliminates 5's in E# AND E7.
... by: Werner Cejnek
The explanations are great. I bought your book. Will the book also have a new edition ?
Thanks, Werner cejnek