Endgame theory - Building the Bridge

Let's take a look today for the endgame that players under 1800 should know

The bridge is a typical universal method, which shows the way of winning in the positions with a pawn on the 7th rank. Of course, it does not only work in the diagram position, but with the all white pawns on the 7th rank except rook's pawns.

1.Re2+! It is always advisable to chase the opposing king as far away from the pawn as possible. Here is what happens when someone forgets to do that, it is called alternative way in the video, Lucena.(https://www.twitch.tv/imslavenpastar/clip/ConcernedRelatedMartenNononoCat-Z2u_GlDh47MAEwyI)

2. Re4 {White touches a bridge (adjustment of the g - line) Nothing brings the attempt to run away with the king immediately, because Black simply gives checks. (2. Kf7 Rf1+ 3.Kg6 Rg1+ 4. Kf6 Rf1+ 5. Kg6 Rg1+ 6. Kh7 Rh1+ 7. Kg8 And this is the best White can achieve, to try one more time to make a bridge) 2... Rh2 3. Kf7 Rf2+ 4. Kg6 Rg2+ 5. Kf6 White prepares Re5-g5.

Rf2+ 6. Kg5 Rg2+ 7. Rg4 The bridge has been successfully built. Here is the Lichess study with the sidelines on this topic.