hello,i am currently working on rook endgames,but it seems its just too complicate for me to understand.i have an average fide rating(2000+)and on this level its a must to know the rook endgames.i know the basics like lucena,philidor,back rank defense,checking distance,umbrella and other things.but i just dont understand rook endgames.i am looking for a rook endgame expert who can teach me understanding rook endgames...i am an openning expert in exchange i will show you a tactical/positional way to play any openning of your choice except kings indian defense and benoni.i am eagerly looking for your support thank you.