Can someone explain why Rb7 is such a game changing blunder

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Avatar of classicalpiano

Link to the game

https://www.chess.com/analysis/game/live/68468717581?tab=review

My reason to play Rh7 was to prevent mate when black rook on h2 arrives in c2 after forcing my king to e1

Avatar of Martin_Stahl
classicalpiano wrote:

Link to the game

https://www.chess.com/analysis/game/live/68468717581?tab=review

 

My reason to play Rh7 was to prevent mate when black rook on h2 arrives in c2 after forcing my king to e1

 

It's not a game losing blunder but goes from an advantage to essentially even. Black also has no mate there after Rc2 because after Rh1+ 2. Kf2 R8h2+ 4. Ke1 Rc2 you just take the h1 rook. With your rook on c7, in that line, you're threatening the c7 pawn and advancing the a6 pawn 

Avatar of classicalpiano
Martin_Stahl wrote:
classicalpiano wrote:

Link to the game

https://www.chess.com/analysis/game/live/68468717581?tab=review

 

My reason to play Rh7 was to prevent mate when black rook on h2 arrives in c2 after forcing my king to e1

 

It's not a game losing blunder but goes from an advantage to essentially even. Black also has no mate there after Rc2 because after Rh1+ 2. Kf2 R8h2+ 4. Ke1 Rc2 you just take the h1 rook. With your rook on c7, in that line, you're threatening the c7 pawn and advancing the a6 pawn 

My question was why is it equal after rb7 

While Rc7 is still winning

Avatar of classicalpiano
Martin_Stahl wrote:
classicalpiano wrote:

Link to the game

https://www.chess.com/analysis/game/live/68468717581?tab=review

 

My reason to play Rh7 was to prevent mate when black rook on h2 arrives in c2 after forcing my king to e1

 

It's not a game losing blunder but goes from an advantage to essentially even. Black also has no mate there after Rc2 because after Rh1+ 2. Kf2 R8h2+ 4. Ke1 Rc2 you just take the h1 rook. With your rook on c7, in that line, you're threatening the c7 pawn and advancing the a6 pawn 

Also it's R1h2+ while the rook on h6 stays there

Avatar of swarminglocusts
Move 32 g4 is crushing. This stunts blacks Kingside attack. Perhaps you have Better chances of queening once your king is safer.
Avatar of magipi

Chess.com's game review is running at a ridiculously low depth. Not reliable. Switch to the "Analysis" tab and give the engine time to calculate. Analysis is also a user-friendly thing where you can try any move as you want, while the game review interface is a nightmare.

As it turns out, Rb7 is better than Rc7. Pretty funny.