Confirmation for "Delete Candidate" function

[TomR]

Would be great to have a confirmation dialog when deleting a candidate move, particularly as delete function is right beside the "move" options. I'm using Mac Express build 64.

[MikeAtBookup]

A confirmation dialog could be added.

However, deleting a move is not hard to recover from. If you remember it, just play it. If you don't remember it, command the app to add all moves that transpose.

[TomR]

Ah that makes sense. You don't delete the "children" as you don't store a hierarchy, just a reference to the stored resulting position. I see. So once a position is created it is never deleted?

[MikeAtBookup]

That's correct. It's a positional database so if a move were deleted it could easily have unintended consequences.

Say I have a huge French database after 1.e4 e6 2.d4 d5.

Then I add the transposing line 1.d4 e6 2.e4 d5. What should happen if I delete the move 1.d4 ? Hopefully it deletes just that move because if it deleted every position resulting from that move it would wipe out my entire French ebook.