Every once in a while, I play a game of chess against my computer or iPod. Sometimes I win—sometimes I lose, but the most frustrating thing that happens to me every once in a while is when the iPod does an en passant capture of one of my pawns.
This is frustrating, I think, because I never see it coming. That’s mostly because it’s an obscure move that I never took the time to learn how to do. I learned about it for the first time in elementary school, so I could always identify it when it happened, but I never knew what it was well enough to be able to pull it off myself or anticipate it. So, this week, I finally looked it up.
This is how it works: On its first move, a pawn can advance one rank or two. (Don’t worry—I already knew that.) If a pawn has been advanced two ranks in its first turn, an opposing pawn can capture it by moving diagonally into the space where the first pawn would have been, had it only moved ahead one rank.
Note that this can only be done in the turn immediately following the two-rank move of the first pawn.
According to Wikipedia, this “prevents a pawn from using the two-square move to pass another pawn without the risk of being captured”
This time, I’ll be ready for you, iPod!