Celticjim:
As far as I know from iyt, it works like this:
If you have less than 6 moveable pieces on a board of open fast espionage (i.e. excl. hq and bombs) and you move one of them between two bombs of your opponent placed on the bottom line, then, within the next turn, you should be able to move your piece back to field it came from. For example: your opponent has a bomb/or hq on b10 and on d10 and you move your piece from c9 to c10. In that case, due to the forced movement thing, you should be able to move your piece back to c9 in your next turn.

Unfortunately, I can't have a look at your posted game in the bug list, as it's obviously still running.
But, in the bug reported by pauloaguia it seems to be the case like I desribed above.

Hope that helps.
Greets, Michael

Sandoz:
slight correction: this should of course only work if you move your piece between your own bombs and not if you move a piece between your oppenent's bombs.

And now I stop spamming ... :-)

Celticjim:
and as you know from our latest game, the whole forced movement thing sucks at all!! ;-)

Celticjim: on the other hand, I know realize that I probabely could have beaten you by this cheap trick, lol

Sandoz:
on my current game with grillyx which will be over in 2 more moves his 5 general was in the middle of open squares,in fact he was given opportunity to do it again after I pointed out to him what happened.

as for our game-------you definitely could have benefitted from this bug

Celticjim: So has anyone else seen a true case of this bug potentially changing the outcome of a game?
Here’s one:
Open Fast Espionage (drjohnj vs. MTC)

The only winning strategy i can come up with in this game requires making use of the fact that my opponent’s pieces cannot move back to their previous squares. So if my opponent exploits this bug, I cannot win, and now he has done so.

I have reported this as another case of the bug (http://81.91.83.6/en/ReadBug?bgi=1995) and expect either:
1) The bug is fixed immediately and the illegal move reverted (unlikely but best option) or
2) The game is ended as a win for me due to my opponent’s illegal move (could be considered unfair on my opponent but I see this has been done before…).

MTC: I had a late night and I'm just awake so gonna try and use that as an excuse as to why I can't get my head round that game MTC,can't quite figure out whats happening.Wait,so it's your turn and you have 6 moving pieces left?Or have they already reset the game and corrected the bug?

anyway this bug needs sorted.I'm gonna drop Fencer a message and see if he can give us some satisfaction

*edit* to say your brackets around the bug link have disabled it,leave a space between bracket and link and it will re-enable

Celticjim:The bug was used on my opponent’s move 76. He moved b4–b3, capturing one of my pieces after his piece had moved b3–b4 on the previous move.

Further information (I am not worried about my opponent knowing this information, there is no way he can use it to his advantage).
My opponent has 2 movable pieces left, either of which could capture any of my remaining movable pieces if given the chance.
None of my remaining movable pieces are capable of capturing either of my opponent’s movable pieces.
My opponent’s HQ is on a1, now protected by only one bomb on b1. I have no sappers left, so I can ultimately only approach the HQ from one square.
My HQ is protected all around it by bombs and my opponent has no sappers left.
The only way I can force a win is to get around his pieces and capture his HQ, the only way to do that (assuming perfect, legal play from my opponent) relies on my opponent not being able to move a piece back to where it just came from.

So if my opponent continues to be able to exploit this bug, I will not be able to win, but I would be able to if the rules are followed. Because of this, I will not play another move in this game either until Fencer intervenes, or until I am about to time out.

And in reply to your edit, if I could edit my previous post I would but, as a pawn, I cannot. My browser automatically converts it to a link anyway, but for the benefit of others, here is a link not surrounded by brackets: http://81.91.83.6/en/ReadBug?bgi=1995

MTC: is it not possible for you to move 4 of your pieces next to his 2 and then when he takes one way you move the other,hope that's clear enough.I'm saying it may be possible for you to sneak past him anyway even tho your pieces are inferior
If not I would write Fencer a message

Celticjim: Like I did in this move?: Open Fast Espionage (drjohnj vs. MTC) (his movable pieces on a3 and b3 at the move linked here)

I do realize it can difficult to follow an active game of Espionage being played by two other players, not being easily able tell which pieces are which, but if you do look through the several moves since he’s had only two pieces left, and otherwise think a little more about the situation, I think you’ll realize that the only winning strategy does require the following of the rule that is broken by this bug.

My thinking is this:
My opponent’s best moves, without following this rule, are to constantly move his pieces around in a tight square at b1–c2. The only way I can win if my opponent does this is to place one piece following his 2 until it can capture the HQ. With this bug, my opponent will be able to capture my piece whenever I try that.

I’ll consider messaging Fencer, but I would have expected the bug tracker to be the best place to report this to Fencer.