<M.Hassan: ... Thanks to Chessmaster that told me Black's move of 45. <<<I did not see that Queen sac.>>>>

I did.

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51. Bc7 Nxb5, 52. Bxb6 a4, 53.Be3 (only move) a3, 54. Bc1 Kf7! (protecting the Black f-pawn), 55. Kf2 a2, 56. Bb2 Na3, 57. Ke2 Nc2, 58. Kd2 a1=Q, 59. Bxa1 Nxa1, 61. Kc3 f5!, 62. gxf5 gxf5 (See diagram below:)

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White tries to trap the Black Knight but Black's last f-pawn threatens to go queening so, White is so hopeless.

44...Bxe4 general one believe each in enough honour change at he door I be proof engage to us again eg,

it is a pine cone elephant repeat back bed eg
in family it is a jot hooking in ask etc duty

ramble give spark off e4 first see be second key,

h3? feel couple off better delve bishop believed to dig in effect ceeded ground ja oomph fan dangle aka,

cart over horses 46.kxh3 ng5+ can racing choosed it now in baba lane fenced hastle in a good cage bishopb7 sugar dips in churlish care ore a mind you,

giving finger e4 pack light knight fag end e4,

hustle of course it is good game ado evermore yes,

at foot the bill bishop going bad forge having,

hoofed again good game fetch in got a fend walled,

in big racked quenching core a cuffed queenh3 repeats on him gold for hanging feckless knighte4,

dent each in delve queen offing to the fray see,

angled dutifuls inch done muscle stern um steps up,

free dipped gen aim bade white knight qualm he faith in ever be my guest edict eddy beds 44...Bxe4.

45.Qxe4 qxh3+ am hodge podge light king he be fare,

game aim each am have queens coup page lacked?

46.Kg1 then engage 46...qxb3 and black has three,

pawns having banked material should win as e6 safe,

back to had chief reason dont give gamble 46.kxh3,

then engage knight follow across 46.ng5+ king,

across or down in g2 when great to see with any luck now ledge train of thought chain gang e5 escry over e4 and black has banked two pawns for gooofed,

Black should find the winning move 43...Qf1 to lure bishop on e5 (Qf2 was better).

44. ... Bxe4 45. Qxe4 (45. Qh6 46. Qg2# / 45. Kg3 Qg2+ 46. Kh4 g5+ 47.Kh5 Qf3 and white has to exhange queens and stay with a piece and two pawns down) 45. ... Qxh3+ with two posibilities :

A) 46. Kxh3 Ng5+ followed by 47. Nxe4 and black is two pawns up.

B) 45. Kg1!? which could be followed by 45. ... Qxb3 46. Qa8+ Nf8 (not 46. ... Kh7 47. Qh8#) and white is three pawns up and can prevent mate or lose its knight, for instance :

47. Bd6? Qd1+ followed by 48. ... Qxd6 / 47. Qxa7 Qe3+ followed by 48. ... Qxe5.

FWIW: I only saw 45...Qxh3+ at the last second. Even a Wed POTD can be tricky at times :)