Misjudged every critical moment

Hi everyone, I played a game recently where although I won, I had misjudged almost every critical moment according to the chess.com computer postgame analysis.

A lot of the moves I thought were good turned out to be mistakes/blunders, and blunders I thought I had made during the game turned out to be alright! 

As you'll see below, a lot of the mistakes centered around being worried about ...Qxg2, not trading two Rooks for a Queen, and plenty of mistakes in the endgame.

Any help would be greatly appreciated, thanks!

I think 12...Qxg2 13.Rdg1 wins, keeping h2 protected.

Hi ShortyICC thanks for the comment, I hadn't thought about 13. Rdg1 (after 12...Qxg2), for some reason I was only thinking about Rhg1(!). You're right, because with h2 protected, Black can't play ...Qxh2 and at the same time protect the Knight! Thanks for that, appreciate it.

12. ... Qxg2?? 13. Qxe5! seems to be winning on the spot, too (white is ahead one minor piece without compensation, as well as having great attacking chances on the black king because of the open g-file.

why cant i post a topic  

Hi yellowchesstiger yes I think you're right, after 12...Qxg2 White could play 13. Qxe5, which is even more direct than 13. Rdg1. Either way Black wouldn't be able to hang on to the Knight.

I think I just panicked during the game, sometimes I worry too much about losing the b or g-pawns! Thanks for the comment.

The reason that 54. f8=Q+ is bad is because after you promote the a pawn Rf3 allows black to protect the h pawn and queening square and white can make no progess. A draw by repetition is the best White can manage :

hey ChessBassGuitar, thanks for the comment. You're right that would have been a draw, if Black found ...Rf3!!. I totally missed that... If it wasn't for Black's pawn on h2 White could try to exchange Queen for Rook and try to promote the other pawns. But in the game situation, ...Rf3!! would have been a draw. I need to work on my calculation, thanks again!

Always be careful playing "pretty" moves (especially ones that sacrifice material), especially in endgames where there can be a lot of possible variations. 

54. Rh7 is a much simpler (and better) continuation. White can capture the black h pawn with his rook and then push his own b-pawn. Black cannot capture either the a pawn or the f pawn without the other one queening, eventually the b pawn will force black's hand and white is left with queen and pawn(s) vs rook which should be easily won. 

ChessBassGuitar, thanks for the comment, that's really clear. I think I just wasn't thinking clearly in the endgame. And I thought about lines involving the b-pawn march but for some reason I thought it would be too slow; totally wrong assessment. Thanks for posting the diagram, it makes sense.