I think there's another glitch.

Ok so I'm no chess genius but I am sure this is a glitch not a genuine move.

So I'm playing a game and the guy protects his Bishop (h7) from my Rook (h8) with his Queen (d3) along the diagonal.

To break this cover, I move my Pawn forward to f5 creating a somewhat effective Pawn wall, the pawn cannot be taken by any piece other than the Bishop and Queen, but is also covered at the diagonal from my bishop (e7).

I just came back to the game to find that a Pawn on e5 (parallel to mine on f5) has somehow moved diagonally to f6 and managed to take my Pawn on f5..... in one move with no other pieces involved. 

So is it me or is that a glitch.

It is a legal move known as an En Passant capture.

I'm sorry I've never heard of it. What are the conditions for it's use?

If you have a pawn on your 5th rank and your opponent moves an adjacent pawn two spaces (effectively jumping past the square your pawn threatens), you are allowed to capture it as your next move (and only then) as if it had only moved one square.  En Passant is french for "in passing," and you capture their pawn "in passing."

https://en.wikipedia.org/wiki/En_passant

If you want to read more about the En Passant move, please refer to this article (which is all it's probably good for..)

https://www.chess.com/blog/VladimirHerceg91/using-en-passant-to-gain-a-mental-advantage

whether it teaches you what en passant even is is beside the point.

The En Passant capture was introduced to chess at about the same time as the rule that allowed pawns to move two squares if they were still on their original square, as a way to counteract the advantage of that two-square move.

However, it is an easy rule to forget to explain, and so a lot of people don't know about it as they were probably taught the rules either by someone who doesn't know about it or by someone who forgot about it.

Thanks guys  

But to explain en passant - the game wouldn't be the same without it. With your king under attack, you'd love to close some lines and protect yourself. Even though white has gotten his/her pawn to e5. You'd be able to do this, but en passant allows white to keep lines open and continue the attack. 

Thus, en passant allows for the game to be decisive in locked positions, by ensuring that one player, if worse, can't force lines shut.

I was just "en passing" through this forum and I noticed the name--Bob Sausage. ??   Any relation to Joey Bag of Donuts??  

Sorry to disappoint, but no. No relation to anyone with a similar name.