Rook pawn advantages are drawing a lot more often. Normally due to stalemate because the opponents king can't be forced to the other side.
Isolated Rook Pawn vs Isolate Knight Pawn
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Mar 26, 2014
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#3
An isolated knight pawn can be more easily blockaded by a knight than a rook pawn can; however, an isolated knight pawn on the 7th is weaker against a queen than a rook pawn on the 7th provided the defending king is nearby and the attacking king is out of range. In a rook ending, having an isolated knight pawn has better winning chances than a rook pawn.
In the middle game, an isolated rook pawn makes a better pawn ram against a fianchettoed position than an isolated knight pawn.
Thanks, those are the kind of thoughts I was interested in hearing.
I realize, of course that the rest of the position makes a world of difference, but can anyone comment, in a general way, on the relative weakness of an isolated Knight Pawn vs an Isolated Rook Pawn?