[Retros] Programs for Solving Retro Problems

[Mark Tilford]

On Sun, Aug 24, 2008 at 3:55 PM, Mario Richter <mri_two at t-online.de> wrote:

>

> Mark Tilford wrote:

>

>> Does it also run into trouble with detecting an un-en passant?

>

> No, with respect to 'un-en passant', 'Retractor' works correctly,

> e.g. for


"an un-en passant which allows two other pieces to check the other king."?