Daily Chess Improvement: Very difficult R & P endgame!

This is a very long and complicated endgame. Please do not post a ridiculous 1 move answer.

White to move. Is it a win or draw? Please analyze deeply. This is a must know R & P endgame.

Comments
No. 1-6
CraigB
CraigB

I mean 1....Kg7. My bad.

CraigB
CraigB

At least I understand how to demolish 1. Ke3 - 1...Re1+ and then 2...Re6. Once the R gets to the 6th rank "far enough" from the b-file, it can just sit there until the White K gets "too close" to the a-pawn then checks it along ranks until the K has to come back to the d-file. And the reason that 1' Ke2! is therefor necessary is that now 1...Kg2 2. Kd3 Rdi1 and the White K is on the c-file before the black rook gets to the 6th rank. and on the d-file, the R can be attacked by the K and the Black K can't defend it.

Yancey_Ward
Yancey_Ward

Editor

This ending is a relative to a problem Alena might well remember because it was the first problem I remember the two of us interacting over as she solved it.

Yancey_Ward
Yancey_Ward

Editor

Just to make my point clearer- in the most tenacious line, the white king will make more than journey towards the pawn- he will have to return to the kingside at one point before returning to defend the pawn.

Yancey_Ward
Yancey_Ward

Editor

Dave, 1....Kg6 offers the most resistance, but the point about the a7 square being open to the white king is one of the two most important points about this ending. You should ask yourself why it has to be 1.Ke2 and not the visually similar 1.Ke3- what changes when white plays the mistaken move?

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