Outside passed pawns | Dr.Dave, Exeter Chess

In the middlegame, central pawns are generally worth more than wing pawns
In an endgame, wing pawns are generally worth more than central pawns — especially if passed.

   [Event "East Kilbride Open"]  [Site "?"]  [Date "1996.??.??"]  [Round "?"]  [White "Turnkey/Fritz 4"]  [Black "Hodgson, Julian"]  [Result "0-1"]  [ECO "D10"]  [Annotator "endgame: outside passed pawn"]  [PlyCount "69"]  [EventDate "1996.??.??"]  [EventType "game"]   1. c4 c6 2. d4 d5 3. Nc3 Nf6 4. e3 a6 {Keeping it solid, avoiding a tactical free-for-all. Good strategy against a computer - or against Hodgson.} 5. Bd3 b5 6. cxd5 cxd5 7. Qb3 Nc6 8. Nf3 e6 9. Bd2 Na5 10. Qc2 Nc4 11. Rc1 Bb7 12. O-O Rc8 13. Rfd1 Bd6 14. b3 {("Dare I say it? White's position is lacking any byte!")} Nxd2 15. Qxd2 O-O 16. Ne2 Ne4 17. Qe1 Qe7 18. a4 Bb4 19. Qf1 {("A sure sign that all is not well in RAM-land")} bxa4 20. bxa4 a5 21. Rxc8 Rxc8 22. Rc1 f6 23. Rxc8+ Bxc8 24. Qb1 Bd7 {[#]} 25. Bxe4 $2 {"Astonishing... the computer places a higher value on centre Pawns than outside Pawns"- fine advice for the middle-game!} dxe4 26. Qxe4 Bxa4 27. Nf4 Be8 $1 {[#]} 28. Nxe6 a4 29. Qd5 Qd7 30. Qc4 Qb5 31. Qc2 a3 32. Qa2 Bf7 33. d5 Qd3 34. g3 Bg6 {0-1 (34) Comp Fritz 4-Hodgson,J (2615) East Kilbride 1996} 35. d6 {[#]} (35. d6 Bxd6 $1 36. Nf4+ Bf7 37. Qxf7+ Kxf7 38. Nxd3 a2) 0-1