En passant
When a Pawn makes a double step from its initial square it can be captured by the opponent's Pawn on the adjacent file next to it. The right to capture expires if not used immediately.
See also: Valladao task.
Zezza, Isidoro
Carrà, Arturo
2nd FIDE Tournament, 1959
1st Prize
h#5 (3+10)
1.0-0-0
Ka2
2.b1=R
Se4
3.Sc7+
c4
4.bxc3 e.p.+
Ka3
5.Rb8
Sd6#
Minx, Thomas
4th tourner for beginners, Die Schwalbe, 1998
3rd Prize
h#5 (3+5)
1.Bg2
Bf3
2.Bf1
e4
3.Kc6
Ke7
4.Bb5
e5+
5.d5
exd6 e.p.#