Rook endgame
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Back rank defense
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This time there are 2 defensive options.1....Rc8In case of a Knight pawn, even waiting on the last rank works for the defending side.1...Rb6Draws very easily with the technique we previously learned.2.Kh6Rb8Black just stands on the 8th rank, as there are no winning ideas for White.3.g6Rc8Now let's check the idea which was winning in previous example, and understand why it doesn't win here.4.Rg7+Kh84...Kf8Loses, as White gets a chance to push the Black King away from standing in front of the pawn.5.Kh7Rc16.Rf7+Ke87.Kg8The winning 'Lucena' position occurs which we will dicuss later in the article.5.Rh7+Kg8White has no options to advance, as there's no extra file (next to h) for the Rook.6.Rg7+...6.g7Even loses due toRc6+7.Kg5Kxh76....Kh87.Ra7Kg8With a draw.