Rook vs 1 Pawn
King cut off to the 3rd rank
Kings not in Opposition - Counting
Kings in Vertical Opposition 
Shouldering
Rook in front of the pawn and other important positions
Rook vs 2 Connected Pawns

​Rook vs 2 Connected Passed Pawns - Part 1
Both Kings are far away from the pawns.
​Rook vs 2 Connected Passed Pawns - Part 2
Both Kings are near the pawns.
​Rook vs 2 Connected Passed Pawns - Part 3
Only the side with the pawns has the King near the pawns.
​Rook vs 2 Connected Passed Pawns - Part 3 Rev
Only the side with the pawns has the King near the pawns.
Rook vs 2 Disconnected Pawns
​Rook vs 2 Separated Passed Pawns - Part 1
Positions where the defending King is not near his pawns & Where both Kings are near the Pawn.
​Rook vs 2 Separated Passed Pawns - Part 2
Rook vs 2 pawns more than 1 file apart.
​Rook vs 2 Separated Passed Pawns - Part 3
Rook vs 2 pawns 1 file apart