Virodhargala shows the obstruction of argala. Planets and houses in the 12th, 10th, 3rd and 9th houses from a house or planet cause virodhargala and obstruct the argala on it from the 2nd, 4th, 11th and 5th houses from it (
respectively). For example, let us say Mercury, Jupiter, Venus and Saturn are in Ge, Pi, Ar and Vi respectively. Saturn is in the 4th from Mercury and Ge and he causes argala on them. With Saturn being a malefic, this is a paapaargala (malefic intervention). But Jupiter is in the 10th from Mercury and Ge. So he obstructs Saturn’s argala and averts the troubles. Venus is in the 11th from Mercury and Ge and so he causes argala on them. With Venus being a benefic, it is a subhaargala (benefic intervention). If Le (3rd from Ge) is empty, this argala is unobstructed.
NOTE: If a sign contains Ketu, argalas and virodhargalas on it are counted anti-zodiacally. For example, let us say Ketu is in Vi. Then Le, Ge, Sc and Ta are the 2nd, 4th, 11th and 5th from Vi (counted anti-zodiacally) and planets in those signs cause argala on Vi and on the planets in Vi. Virodhargala is also counted similarly.
