That's weird terminology. I always thought of it as "seventh heaven". If your suggestion is to get both rooks on the 6th rank, then why call them "blind"? If we look to Stockfish, it shows the 6th rank idea works if Re7. Otherwise, it is saying to keep it at the 7th rank but with the other rook.
This will make you feel in good company:
https://www.chess.com/news/view/andreikin-shows-endgame-magic-beyond-move-100-4925
Game Bluebaum - Andrekin, after move 56.
The difference: GM Bluebaum did not manage to win!
68 Rd7+ is fine.
77 Rh2? throws away the win. You had to play 77 Rff3
I don't know, man... but I think that you should win in the end of this game according to Chess theory.
But let our Chess experts say their wise word. )
The endgame priciple that applies here is "move your king forward in the endgame". At the beginning of the endgame (after black's move 67, the position in the opening post), this is what black wants to do, to help his pawns. What does white have to do to stop that? Answer: nothing. White does not have to do anything, the king is already cut off forever by the rook on d6. The black king can never ever go forward.
Now you played 68. Rd7+, and then 70. Rc6+, 71. Rf7+, 72. Rc4+... these checks all force the king to go forward, which is good for him, bad for you. They are worse than worthless, they actively help black.
Maybe there is still a possibility to win at that point, after all you are still up a rook. But it became very hard.
Rh3 was my first reaction. You force the black rook into the corner. Even though convention says rooks belong behind passed pawns, the h pawn is nowhere near queening so it is fine. Once the black rook is in the corner you move your h rook back onto an open file.
Black has to move their rook out again or get checkmated by whites rooks. (69.Ra3 70.Ra7 71.Rd8)
If they do move their rook out again, you have effectively given yourself a tempo since your king and rook are no longer lined up on the c file. You should be able to force the black king to the back row and win the h pawn. (69.Ra3 70. Ra7 71.Rxh6) Black can check you along the way, but you can always get out of check while attacking the black rook.
Edit: I ran this through an engine, Rh3 was no where on it's radar but it agreed with me once I forced the issue. It gave a rook check on c8 but after Kd7 Rf8 you still have Ra6.
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Edit: I ran this through an engine, Rh3 was no where on it's radar but it agreed with me once I forced the issue. It gave a rook check on c8 but after Kd7 Rf8 you still have Ra6.
Tried the Kibitzer in SF14. It gives Rh3 closely followed by Kb6, Kd7 (equal) at depth 30 in the initial position.
Up to that point Rh3 always appears but lags slightly. I think that's just SF14 trying to work out how to mate with a rook. Rh3 looks like it would reach KRK (and resignation) quickest.
Too many blunders in this game, but one thing I wanted to get out of it was in the endgame. On move 68, I shouldn't have played Rd7+ to keep the king trapped. Instead of the defending side not having the pawn, it had 2 connected pawns. Is there a rudimentary technique (maybe with a name like Philidor?) which explains what white should be doing?
Maybe I need some sleep, I couldn't make sense of it. Any help appreciated.