Interesting knight vs bishop endgame

[BeyondCritics]

I am cross posting this from https://chess.stackexchange.com/questio ... op-endgame.
[d]8/1N4k1/7p/4ppbP/4P3/1PP5/1K6/8 b - - 0 1

The preliminary verdict (following the stockfish pv) is, that black holds the draw with a serious of only moves. The OP claimed to have reason to believe, that there might be a win for white. Is he right?

[peter]

I am cross posting this from https://chess.stackexchange.com/questio ... op-endgame.
[d]8/1N4k1/7p/4ppbP/4P3/1PP5/1K6/8 b - - 0 1

The preliminary verdict (following the stockfish pv) is, that black holds the draw with a serious of only moves. The OP claimed to have reason to believe, that there might be a win for white. Is he right?

According to ShashChess after Backward of the game

[pgn][Event "EU-ch 11th"]
[Site "Rijeka"]
[Date "2010.03.09"]
[Round "4"]
[White "Almasi, Zoltan"]
[Black "Sanikidze, Tornike"]
[Result "1-0"]
[ECO "B65"]
[WhiteElo "2720"]
[BlackElo "2566"]
[Annotator "Martan,Peter"]
[PlyCount "115"]
[EventDate "2010.03.06"]
[EventType "swiss"]
[EventRounds "11"]
[EventCountry "CRO"]
[Source "ChessBase"]
[SourceDate "2010.05.18"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 e6 7. Qd2 Be7 8.
O-O-O O-O 9. f4 Nxd4 10. Qxd4 Qa5 11. Kb1 Rd8 12. h4 h6 13. Bd3 e5 14. Qf2 exf4
15. Qxf4 Qe5 16. Qxe5 dxe5 17. Bxf6 Bxf6 18. Nd5 Bg4 19. Rdf1 Rd6 20. Bc4 Kf8
21. Bb3 Rad8 22. Ne3 Be6 23. Bd5 Bxd5 24. Nxd5 Rc8 25. b3 Bd8 26. h5 Bg5 27.
Rh3 b5 28. Rhf3 f6 29. Rd3 Kf7 30. c3 a5 31. Kb2 a4 32. g4 Ra8 33. Rfd1 Ra7 34.
Nb4 Rxd3 35. Rxd3 axb3 36. axb3 Rb7 37. Rd5 g6 38. Nc6 Kg7 39. Nd8 Re7 40. Rxb5
gxh5 41. gxh5 f5 42. Rb7 Rxb7 43. Nxb7 fxe4 44. Kc2 Be7 45. Kd2 Kf6 46. Ke3 Kf5
47. b4 Kg4 48. Na5 Kxh5 49. Nc6 Bd6 50. c4 Kg4 51. Kxe4 h5 52. c5 Bf8 53. Nxe5+
Kg3 54. Ng6 h4 55. Nxh4 Kxh4 56. Kd5 Bh6 57. c6 Bf4 58. b5 1-0[/pgn]

at given position after 43.Nxb7 it's to be drawn.

With 6men Syzygys, 22 threads of 12x3GHz CPU, 32G hash full:

8/1N4k1/7p/4ppbP/4P3/1PP5/1K6/8 b - - 0 1

Analysis by ShashChess 17.1:

43...fxe4 44.Kc2 e3 45.Kd3 e4+ 46.Ke2 Kf6 47.Nc5 Ke5 48.c4 Be7 49.Na6 Kd4 50.Nc7 Ke5 51.Kxe3 Bc5+ 52.Kd2 Bd6 53.Nb5 Bc5 54.Ke2 Bf8 55.Nc7 Bd6 56.Na6 Be7 57.b4 Kd4 58.c5 Kd5 59.Nc7+ Kc6 60.Ne6 Bf6 61.Ke3 Kd5 62.Nf4+ Ke5 63.Nh3 Kd5 64.Nf4+
= (0.00) Depth: 73/61 00:05:25 2871MN, tb=45908953

In the game Black blundered at 44...Be7?
After this one text move:

[d]8/1N2b1k1/7p/4p2P/4p3/1PP5/2K5/8 w - - 0 45

Analysis by ShashChess 17.1:

45.Kd2 Kf6 46.Ke3 Kf5 47.b4 Bg5+ 48.Ke2 Be7 49.b5 Ke6 50.c4 Bb4 51.Ke3 Kd7 52.c5 Kc7 53.c6 Kb6 54.Kxe4 Be7 55.Kd5 Bf6 56.Nd6 Ka5 57.c7 Ka4 58.Ke4 Bh4 59.b6 Be1 60.b7 Bf2 61.Nc4 Be3
+- (61.94) Depth: 34/37 00:00:00 3050kN, tb=310