Can you spot the error?

My blitz game, which may appear smooth, has a bunch of tactical mistakes from both me and my opponent.

I lost on time because of many disconnections (nah! game was not played here on this site, even other sites face this problem)

How many can you spot?

Um...so  far 8 is the count

Thats a good count. Can you pls point them out.

Sorry abt that, but I learnt a lot of tactical patterns from this game and also how to draw R+P vs Q after 55. Rb4+! Rxb4 56. a8=Q .

Alright, I'm not that great at chess, but I'm going to take a shot at this.

What might appear to be an obvious blunder is 13. Nxd5, which allows you to snatch up his loose b pawn. However, I think the real blunder in this continuation is 14. Rb1. Instead of trying to protect that rook, I would have gone for the fork at Nc7:

14. Nc7 Qd8 15. Nxa8 Bxa1 16. Qxa1 Qxa8 After this variation, material is equal, both queens are stuck in the corners, but white has a nice raking queen/bishop combination aimed directly at the black king, which could make for some easy mating opportunities, especially with white to move. Perhaps 17. Ng5, adding to the already frightening coordination of pieces on black's king.

21. ...f5 seems like an obvious blunder. It looks like black wanted to continue the exchange: 22. gxf5 Bxf5, but he didn't realize that white's move 21. Ne3 prevented this.

54. Rb5 seems like a blunder. I can't seem to find any winning continuation for white. Black is winning easily after 54. ... Rxa7 55. Kf6 Kg4 56. Kg6 Ra6+ 57. Kg7 h5. As long as black's king stays off of the 5th rank, there is no way for white to safely capture either of black's pawns. If white tries to prevent the crippling Ra6+ with 56. Rb6, black continues with 56. ... h5 57. Kg6 with the idea of playing Rb4+ to drive the black's king away from his pawns. Black prevents this and is winning easily after 57. ...Ra4. White's rook is essentially immobile at this point. It cannot safely give check because of black's rook, and any other move along the b file is bad because black can take advantage of the opposing kings with Ra6+. White could try 58. Rf6, but that is met with 58. ...Rf4. White is losing if he accepts the rook exchange. Any other move, such as 59. Ra6, allows black the opportunity to continue his h pawn march.

I suppose the other option for white after 54. ... Rxa7 is 55. Kf5, but this breaks the pin on the g pawn. If black advances it, white has an opportunity for a discovered check, but the opposition of the two kings prevents white from moving his king anywhere meaningful. Perhaps 56. Kf4+, but this is met with 56. ...Kh4. If white threatens the loose h pawn, it simply takes marches forward. If white plays Rb4, it's the same position as before except one rank closer to the queening square.

So what about 55. Ke4? This maintains the pin on black's g pawn while bringing the king to the center and towards the queening squares. I think black's response of 55. ... Kg4 is winning. The opposition prevents white's king from approaching the pawns, and there's no way to make any meaningful threats with the rook.

Am I missing something here? What was white's idea behind 54. Rb5?

Thanks for your effort to analyze this game. I was left with little time. So my opponent was just blitzing(and blundering too) to avoid me thinking over his time. He won on time.

54. Rb5 was a mistake, but he was intent on winning on time only so it probably makes sense. He could even have played 55. Rb4+! .

21... f5 was okay as I was not intent on playing Bxf5 after gxf5; I just wanted to save my bishop.

13.Nxd5 wasn't a blunder by white. It was the best move to gain center space. I should have played d4 instead or Re8 earlier to avoid this capture.

In your variation "14. Nc7 Qd8 15. Nxa8 Bxa1 16. Qxa1 Qxa8?" , you missed 16.. Bxf3 which doubled his pawns and gives black an advantage.

Few other tactics missed which were missed by both of us:
-->16... Nd4 17. Nxd4 Bxh2+ 18. Kf1 cxd4
-->23... Rxe6 24. fxe6 Nd4 winning the white queen
-->Hardest one 25... Nxf3 26. Bxf3 Qh2+ 27. Kf1 Bg3 28. fxg3 Rxe3 29. g4 Qg3  which was winning
-->29. c3 trapped black knight
-->38... Ke7 won the exchange for black

Ah, I see now that 22. h5 would have trapped your bishop. I hadn't noticed that before.

In regards to 16 ... Bxf3 17. gxf3, what does black do next? If he captures at 17. ... Qxa8, we go right back to the problem of white's raking queen/bishop with black's queen in the corner. If black doesn't capture the knight (because it's trapped), he's giving up free material if he moves his queen anywhere that it can't defend the c7 escape square.

I suppose instead of capturing the knight, black could develop his own knight. e5 is out because of the queen. b7 is obviously useless. e7 retreats and cuts off a nice diagonal for the queen. a5 and b4 work, though I think they could be met with Qc3, which is comfortable for white. The best bet seems to be 17. ... Nd4, which cuts off white's queen diagonal and prevents her from going to e1, as that would be met with 18. ... Nxf3+!. Black is winning easily if Nd4 is met with Bd5 (with the idea of freeing the trapped knight): 18. Bd5 Qxd5 19. Nc7 Nxf3+. The white king's escape squares simply lead to discovered checks and king-knight forking opportunities. Perhaps Nd4 should be met with 18. Qd1 to prevent ... Nxf3+.

Alternatively, black could go on the offensive with 17. ... Qg5+, followed up by 18. ...Qf4 to keep the white knight trapped.

Yeah, I think you're right. Black has the advantage after 16. ... Bxf3.

Sorry to be obsessing over this one section, but I think both sides have very interesting options. Let's go backwards a little bit to 14. Nc7 Qd8. What if 15. Bxf7+ ? I can't find any winning lines for white, but it does force black to bring his king towards out in the open. What do you think?

After 14. Nc7 Qd8 15. Bxf7+ Kxf7 16. Nxa8 Bxa1 17. Qxa1 Bxf3 18. gxf3 19. Qxa8 white has gained nothing by losing the bishop for the pawn.

If you looked at my previous post, I mentioned that I missed out on 16... Nd4 17. Nxd4 Bxh2+ 18. Kf1 cxd4 which was good for black. I wouldnt consider 16...Bxf3 as this bishop-knight-queen pin maintains the pressure. Also white would not play 17. gxf3 in response to 16...Bxf3