Reasons to move a pawn

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atowns

can anybody help with with this. i have to give reasons why to move a pawn, as a little challenge. 

can anybody suggest a few. Ive got things like

take control of the centre

attack an enemy piece

free up pieces to move

ETC

if anyone could suggest a couple that i may of missed would be great.

 

Thanks

Nylon-Admiral

mate?

TheGreatOogieBoogie

1.Candidate passed pawns should lead.  So with pawns a b and c vs. a and b with white to move then c4! is likely best.  Of course king positions matter too. 

2.The opponent has opposition and you use a pawn move as a reserve tempo to elbow through.

3.Pawn breakthrough (giving the opponent many more pawns but it doesn't matter usually since your new queen will clean them up)

4.Control the center. 

5.Establishing a secure outpost for a piece (such as a knight)

6.Making way for a piece (such as sacrificing a pawn on e5 so a knight can jump to e4).

7.Opening lines.

8.Dynamically activating your pieces (such as exchanging an isolated d-pawn with d5 and usually the e6 pawn recaptures and then knight recaptures)

9.Pawn storm against a king.

10.Prophylaxis (such as playing g3 so a Nh5 can' jump to f4 tying a bishop to the defense of the g-pawn). 

11.Fortressing.

12.Sacrificing so the opponent's pawn gets in the king's own way (I'm recalling a puzzle from Dvoretsky's Endgame Manual and Secrets of Pawn Endings here).