Firstly, How to open *.pgn files with Scid? visit this link
https://chess-teacher.com/la_4.16.29.2/747156-How-to-open-pgn-files-with-Scid
Enjoy!!!!
https://chess-teacher.com/la_4.16.29.2/747156-How-to-open-pgn-files-with-Scid
Download 8592 games King and pawn versus king endgame
Enjoy!!!!