Bungalow Shatranj Tactics. Standart ways to promote your pawn to Assistant

1) Your pawn must be protected by other pawn

2) Opponent pawn must be unprotected

3) Opponent pawn must be blocked (a) or it's straight forward square must be controlled by one of your pawns (b).

Another complicated case is when opponent pawn is protected by other pawn and you attack it using four pawns and a blocker (c).

You - White; Opponent - Black. Black turn to move.

a)

b)

c)