"Has iron grinding makes perfect": This is a very true statement with pawn. In chess, pawn can only go straight, it does not know how to turn back, so it becomes a good prey for the opponent. Although it weak, the pawn is a potential danger to the opponent. It is able to level up after reaching the end of the board, it can become any one piece (♘, ♗, ♖, ♕) except the leveling into king (♔) and itself (♙). A pawn need to go through a defense's barrier, go to last of a board to be able to change it's rank.Summary: Despite many difficulties and hardships, if you try and try your best, you will surely succeed.