EN PASSANT played out so as to be explained
      WHITE                                        BLACK                  
  1.  Ac2(pawn)   -Ac4                             Aa8(rook)   -Ba8
  2.  Af1(bishop) -Bg2                             Ab8(knight) -Bb6
  3.  Ac4(pawn)   -Ac5                             Bd7(pawn)   -Bd5
  4.  Ac5(pawn)   xBd5(en passant -occupies Bd6)   Ac7(pawn)   xBd6(pawn)
  5.  bg2(bishop) xBa8(rook)                       Bb6(knight) xBa8(bishop)


BTW:
http://www.ex.ac.uk/~dregis/DR/notation.txt
http://www.ex.ac.uk/~dregis/DR/enpasant.txt
http://www.ex.ac.uk/~dregis/DR/guidelns.txt
The Above links explain chess notation, en-passant and real quick good guide lines.

      WHITE      BLACK           WHITE      BLACK
  1.  Ae2-Ae4    Ab8-Bb6     13. Ag3xAe5    Ah8-Bh8
  2.  Ab1-Ac3    Af8-Bg7     14. Ae5xAc7    Ac5xAf2
  3.  Ad2-Bd4 ?  Bg7xBd4     15. Bf2-Bd4    Bh8-Bh2
  4.  Ac1-Af4    Ad8-Be7     16. Ac3-Ab5    Af2-Bg2
  5.  Ad1-Bd2    Ae7-Ae5     17. Ahl-Agl    Bg2xAg1
  6.  Af4-Ag3    Bb6-Bc4     18. Ab5-Ad6 +  Ae8-Bf7
  7.  Bd2-Bc2    Bd4-Ac5     19. Ad6xAc8    Bb8-Bb4
  8.  Ag1-Af3    Be7-Be5     20. Ac2-Ac3    Bb4-Bb5
  9.  Af1-Bf2    Be5-Bb2     21. Af3xAgl    Bh2xAh2
  10. Ae1-Ad2    Aa8-Ba8     22. Ac7xAh2    Ag8-Af6
  11. Bc2xBb2    Bc4xBb2 +   23. Ac8xAa7    *
  12. Ad2-Ac1    Ba8-Bb8     * can't develop pieces so folds

       WHITE                 BLACK                           WHITE           BLACK      
   1.  Acl-Bb2               Ab8-Bb6                     18. Adl-Af3         Ad8xAd2
   2.  Agl-Bg3               Aa8-Ba8                     19. Af3xBg4         Bh8-Bh2
   3.  Aa2-Ba3               Ag8-Af6                     20. Bg4-Bd7 +       Ae8-Af8
   4.  Abl-Ac3               Af8-Bf7                     21. Ab3xBc4 --If-> Bf2xAf2 then
   5.  Bb2-Ab3               Ac8-Bd7                         Bd7-Bf7 mate!
   6.  Ag2-Ag3               Bb6-Bc4                     21.      Instead->  Ae6-Be6
   7.  Af1-Ag2               Ba8-Bf8                     22. Bc4-Ac5 +       Af8-Ag8
   8.  Ag2xAb7               Bd7-Bg4                     23. Bdl-Bgl         Bf2xAf2
   9.  Ac3-Be3               Af6-Ae4                     24. AflxAf2         Bh2-Bd2
   10. Be3xBg4               Ae4xBg4                     25. Ac5-Bd4         Ad2-Ael +
   11. Ael-Agl->diagram      Bf7-Bd5                     26. Agl-Ag2         Af7-Bf6
   12. Aal-Bal               Ae7-Ae6                     27. Bg3-Bf5         Ag8-Af8
   13. Ae2-Ae3               Bf8-Bf2                     28. Bd7-Be7 +       Af8-Ag8
   14. Ab7-Ahl               Ah8-Bh8                     29. Be7-Bg7 mate.
   15. Bal-Bdl               Ac7-Bc6
   16. Ac2-Ac4               Bd5-Ac6
   17. AhlxAc6!              Ad7xAc6
   If white did not capture, then,...
   ...Queen to Aa8...Ac6xAhl...,
   and white losing the advantage

A Game being played out right now...