Opponent's attack fizzled, gave up when he had a won endgame

This was an odd one as I won on time in a losing position. My opponent seems to have lost interest when his attack fizzled out.

[PGN][Event "Correspondence game"]

[Site "some.other.site"]

[Date "2019.07.17"]

[Round "?"]

[White "N.N."]

[Black "furtom"]

[Result "0-1"]

[ECO "B35"]

[WhiteElo "1500"]

[BlackElo "1667"]

[EventDate "2019.??.??"]

[SourceVersionDate "2006.08.28"]

e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 {one of the variations I have looked

at a bit, so I played it.} (4... e6 5. Nc3 Qc7 6. Be3 a6 {seems to be more

mainline.}) 5. Nc3 Bg7 6. Be3 Nf6 7. f3 O-O 8. Bc4 Qb6 9. Bb3 Nxe4 10. Nd5 ({

I was expecting my opponent to go for something like} 10. fxe4 Bxd4 11. Bxd4

Qxd4 12. Qxd4 Nxd4) 10... Qa5+ 11. c3 Nc5 12. Nxc6 {B35: Sicilian: Accelerated

Dragon with 5 Nc3: main line} bxc6 ({The engine suggests} 12... dxc6 13. Nxe7+

Kh8 14. Nxc8 Rfxc8 15. O-O Re8 16. Bf2 Rad8 17. Qc2 Qb5 {but I took with the b

pawn simply to take toward the center. I guess the drawback is isolating the a

pawn.}) 13. Nxe7+ Kh8 14. Nxc8 {The position is equal.} Raxc8 ({The computer

says} 14... Rfxc8 {keeps more tension.} 15. O-O d5 16. Re1 Qb5 17. Bc2 Re8 {

However, I thought taking with the a Rook would allow the c Rook to go to the

open e file.}) 15. O-O Rfe8 {as planned.} 16. Re1 $146 {[#]} (16. Bf2 $11) ({

Predecessor:} 16. Bf2 Nxb3 17. axb3 Qe5 18. Qxd7 Rc7 19. Qd1 Qe2 20. Re1 Qxd1

21. Raxd1 Rxe1+ 22. Rxe1 Kg8 23. Re8+ Bf8 24. Bc5 {1-0 (24) Voss,J (1823)

-Puffay,J (1289) Chemnitz 2009}) 16... d5 {I thought it was time to finally

move the center pawn. The computer likes Rxe3, but I still think my move was

OK.} (16... Rxe3 $1 $17 17. Rxe3 Nxb3 18. Qxb3 (18. axb3 Qb6 $17) 18... Qc5)

17. Qc2 (17. Qd2 {looks sharper.} Kg8 18. Bf2 Rxe1+ 19. Rxe1 Rd8 20. Bc2) 17...

Nxb3 {sometimes when I don't have a plan, I go for exchanges...} (17... Kg8 $15

) 18. axb3 $11 Qc7 {aiming at the Kingside. The engine seems to like Qd8 for

"balance."} (18... Qd8 $11 {keeps the balance.}) 19. Rxa7 Qxa7 ({At this point,

I so much wanted to play} 19... Rxe3 {I felt there had to be something if only

I could find the correct move order! However, it fails to} 20. Rxc7 Rxe1+ 21.

Kf2 Rxc7 22. Kxe1 {so I had to give it up.}) 20. Bxa7 Rxe1+ 21. Kf2 Rce8 {

I have a feeling my opponent thought 19.Rxa7 was a bigger tactical blow than

it turned out to be, judging by what we shall soon see.} 22. Qd2 R8e2+ ({

I though about retaining the rooks with} 22... Rb1 $14 {but eventually decided

to exchange.}) 23. Qxe2 $18 Rxe2+ 24. Kxe2 f5 $2 {This move seems to have been

a blunder.} (24... Be5 $16 {would have been sharper.}) 25. Ke3 (25. Bd4 $18

Bxd4 26. cxd4 Kg7 27. Kd2 Kf6 28. Kc3 Ke6 29. Kb4 Kd7 30. Kc5 {etc. And I'm

clearly losing.}) 25... Be5 $2 {At the time, I thought this was a decent move,

but it's, in fact, a blunder. At this point, my opponent seems to have lost

interest, however, and lost on time in a winning position with two days for

the move. As I said earlier, I think he was disappointed with the exchanges.} (

{However, even if I had played "best"} 25... Kg8 $16 {after a lot of

manuvering and good play on both sides, Black is still lost.} 26. Bd4 Bf8 27.

b4 Bd6 28. h3 Kf7 29. Kd2 Ke6 30. Kc2 Kd7 31. Kb3 Kc7 32. Ka4 Kb8 33. Bc5 Be5

34. b5 Kb7 35. bxc6+ Kxc6 36. Bd4 Bc7 37. b4 h5 38. b5+ Kb7 39. Be3 f4 40. Bc5

g5 41. Kb4 Be5 42. Kb3 Bc7 43. Kb4 Kc8 44. Bf2 Bd6+ 45. Bc5 Be5 46. Be7 Kb7 47.

Kc5 Bxc3 48. Kxd5 Kb6 49. Bxg5 h4 50. Bxf4 Kxb5 51. Be5 Bd2 52. f4 Be1 53. f5 {

etc. I don't think either my opponent or I would have done as well as this

variation, but nevertheless White should win.}) 0-1[/PGN]

I need more practice in such endgames. I thought White's doubled pawn would be more of a weakness then it turned out to be.

That's great! Thank you. I didn't know I could do that!