interesting endgame

[jdart]

From CEGT's 40/120 game database. Interesting how Fizbo has big + evals throughout the endgame. But Stockfish and Houdini think 58. .. Ne2+ draws.

[pgn][Event "CEGT 40/120"]
[Site "?"]
[Date "2020.01.18"]
[Round "16.1"]
[White "Fizbo 2.0 x64"]
[Black "RofChade 2.2 x64"]
[Result "1-0"]
[ECO "D85"]
[PlyCount "135"]
[EventDate "2020.??.??"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Nf3 c5 8.
Rb1 O-O 9. Be2 cxd4 10. cxd4 Qa5+ {0.26/28 183} 11. Qd2 {0.21/23 136} Qxd2+ {
0.13/29 128} 12. Bxd2 {0.21/1 0} b6 {0.18/32 235 (Td8)} 13. O-O {0.15/23 169}
Bb7 {0.18/31 118 (e6)} 14. d5 {0.17/25 202} Ba6 {0.15/32 124} 15. Rfe1 {
0.25/25 195 (Lxa6)} Bxe2 {0.00/32 204} 16. Rxe2 {0.25/1 0} Na6 {0.00/33 156
(Tc8)} 17. g3 {0.23/23 157 (Lg5)} Rac8 {0.00/31 185 (Tfc8)} 18. Be3 {0.08/24
408 (Lg5)} Nc5 {-0.02/31 174 (Tc3)} 19. Bd4 {0.01/23 132} Rfd8 {0.00/31 100
(Sa4)} 20. Rc1 {0.02/25 135 (Kg2)} Bxd4 {0.00/30 105} 21. Nxd4 {0.02/1 0} e6 {
0.00/33 110} 22. Nc6 {0.01/26 263} Rd7 {0.00/34 338} 23. dxe6 {0.01/25 416}
fxe6 {0.00/33 109} 24. Ne5 {0.01/27 255} Rdd8 {0.00/35 196 (Td6)} 25. h4 {
0.26/26 203 (Kg2)} Kg7 {0.00/36 101} 26. g4 {0.26/26 144 (Kg2)} Kf6 {0.00/31
90 (Td4)} 27. f4 {0.15/27 244} Rd4 {0.00/32 77} 28. Kg2 {0.29/26 190} Kg7 {
0.00/33 105} 29. Kf3 {0.27/26 213 (g5)} Rf8 {0.00/33 141 (Ta4)} 30. g5 {
0.57/26 138} Ra4 {0.00/36 124 (Tfd8)} 31. Rd1 {0.68/27 135 (Th1)} Ra3+ {
0.00/33 71} 32. Kg4 {0.71/28 179} h5+ {0.00/35 81 (Tc3)} 33. gxh6+ {0.71/1 0}
Kxh6 {0.00/38 98} 34. Rd6 {0.36/25 286 (Th1)} Rc3 {0.00/34 83 (b5)} 35. Rc6 {
0.06/26 350 (Td1)} Rf6 {0.30/34 124 (b5)} 36. Re1 {0.88/28 161 (Sd7)} Rf8 {
0.00/36 108} 37. a4 {0.99/28 135 (Te2)} Rc2 {-0.61/47 516 (Tg8)} 38. Rc7 {
2.19/26 99 (a5)} Rf2 {1.80/29 77} 39. Rg1 {2.11/27 113 (Kh3)} R2xf4+ {1.95/29
78} 40. Kh3 {2.10/28 174} R8f6 {1.75/33 197} 41. Ng4+ {2.10/28 164} Rxg4 {
1.95/29 70} 42. Rxg4 {2.10/1 0} a5 {2.13/30 110 (Sd3)} 43. e5 {2.23/26 144
(Tc6)} Rf5 {1.38/29 185 (Tf3+)} 44. Rc6 {2.18/26 83} Nd3 {1.72/32 109} 45. Rd4
{2.34/27 103 (Tg5)} Rf3+ {2.16/30 150} 46. Kg2 {2.32/27 127} Ne1+ {2.01/31 58}
47. Kg1 {2.29/28 128} Nd3 {2.06/31 62} 48. Rd8 {2.28/28 100} Nf4 {2.02/34 88}
49. Rh8+ {2.27/28 93} Kg7 {B 0} 50. Rb8 {2.28/28 87} g5 {2.11/32 70} 51. hxg5 {
2.28/26 81} Kg6 {2.12/33 63} 52. Rbxb6 {2.28/27 108} Kxg5 {2.12/33 68} 53. Rc4
{2.29/26 62} Kf5 {2.03/35 52} 54. Rb8 {2.28/26 54 (Ta6)} Kg4 {2.13/32 141} 55.
Ra8 {2.43/26 138 (Tg8+)} Kh3 {2.30/30 63} 56. Rc2 {2.43/27 47 (Th8+)} Kg4 {
2.53/31 83} 57. Rg8+ {2.40/27 126} Kf5 {2.55/30 85} 58. Rc4 {2.40/26 57} Kxe5 {
2.62/31 121 (Sg6)} (58... Ne2+ $5) 59. Rg5+ {2.43/26 45} Kf6 {2.70/30 117} 60.
Rxa5 {2.43/25 55} e5 {2.70/27 42} 61. Re4 {2.54/24 53} Ng6 {2.80/27 41} 62. Re1
{2.60/24 45 (Ta8)} Ra3 {2.74/24 42 (Th3)} 63. Ra8 {2.60/24 40} Kf5 {2.88/29 93
(Sh4)} 64. a5 {2.60/24 41} Nf4 {2.89/31 66 (Sh4)} 65. a6 {2.69/22 34} Ra2 {
2.95/33 39 (Kg4)} 66. Rb1 {2.61/26 52 (Kf1)} Ke4 {6.05/29 145} 67. a7 {2.61/27
52} Ne2+ {6.40/29 75} 68. Kf1 {2.95/27 39} 1-0

[/pgn]

[fastgm]

37. ... Rc2 is inaccurate. After this move black fights for a draw.
58. ... Ne2 seems to be a tablebase draw. After 58. ... Kxe5 it's lost.
Fizbo 2 missed an earlier winning continuation:

[d]8/2R5/1p2prpk/p1n5/P3P1RP/7K/8/8 w - a6 0 43
Stockfish 11: 43/89 12:12 +3,96 43.Rc8 Kg7 44.e5 Rf5 45.Rc6 Nd3 46.Rg5 Rf1 47.Kh2 Nf4 48.Rg4 Kh6 49.Kg3 Nh5+ 50.Kg2 Rf5 51.Re4 Rf8 52.Rec4 Rf7 53.Rxb6 Ng7 54.Rbc6 Rb7 55.Ra6 g5 56.hxg5+ Kxg5 57.Kf3 Rb3+ 58.Ke2 Ra3 59.Kd2 Kf5 60.Rxa5 Nh5 61.Rb5 Nf4 62.a5 Nd5 63.Kc1 Rh3 64.Kb2 Kxe5 65.a6