How does your stockfish evaluate this position at move 24!White turn!

[Nay Lin Tun]

[pgn][Event "CCCC 1: Rapid Rumble (15|5) Stage 2"] [Site "Chess.com"] [Date "2018.09.18"] [Round "?"] [White "Booot 6.3.1"] [Black "Lc0 17.11089"] [Result "0-1"] [BlackElo "3283"] [ECO "D87"] [Opening "Grünfeld"] [Time "09:18:25"] [Variation "Classical Exchange, 9.O-O Nc6 10.Be3"] [WhiteElo "3276"] [TimeControl "900+5"] [Termination "normal"] [PlyCount "190"] [WhiteType "human"] [BlackType "human"] 1. d4 d5 2. c4 Nf6 3. cxd5 g6 4. Nc3 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 O-O 8. Ne2 c5 9. O-O Nc6 10. Be3 b6 11. dxc5 Qc7 12. Nd4 Ne5 13. Nb5 Qb8 14. Bd5 Ng4 15. g3 Nxe3 16. fxe3 Bh3 17. Rf2 a6 18. Bxa8 axb5 19. Bd5 e6 20. Bc6 Bh6 21. Qe2 Qc7 22. Bxb5 Qxc5 23. Re1 Bg5 24. Bc4 h5 25. Kh1 Rd8 26. Bb3 Qe5 27. Qf3 Rd7 28. Rc2 Rd3 29. Rf2 Qc7 30. Rc2 b5 31. Rcc1 Qe5 32. Bd1 Rd2 33. Re2 Rd7 34. Re1 Rd2 35. Re2 Bg4 36. Rxd2 Bxf3+ 37. Bxf3 h4 38. gxh4 Bxe3 39. Rd8+ Kg7 40. Rcd1 Bf4 41. Bg2 Bxh2 42. Rf1 Qc7 43. Rd3 Be5 44. Rdf3 f6 45. Rd1 Qc4 46. Rh3 Kh6 47. a3 Qe2 48. Rb1 Qc2 49. Rg1 Bxc3 50. Rf1 Kh7 51. Bf3 Be5 52. Bg2 Bb2 53. Re3 Bc3 54. Rff3 Bd4 55. Re1 Qd2 56. Ref1 Qe2 57. Rc1 Qxe4 58. h5 Qg4 59. hxg6+ Kxg6 60. Rcf1 f5 61. Rh3 Qe2 62. Rc1 Kf6 63. Bf3 Qe3 64. Rd1 e5 65. Bg4 Qf2 66. Rh6+ Ke7 67. Rh7+ Kd6 68. Rh6+ Kc5 69. Rh2 Qg3 70. Be2 Qxa3 71. Rf1 Qe3 72. Bf3 b4 73. Bg2 Qg5 74. Bh3 f4 75. Rg2 Qh5 76. Rh2 f3 77. Be6 Qg6 78. Bd7 b3 79. Bh3 b2 80. Rxb2 Bxb2 81. Rxf3 Bd4 82. Bg4 Qxg4 83. Rg3 Qe6 84. Kh2 e4 85. Rg2 Kc4 86. Kg3 Be5+ 87. Kf2 Kd3 88. Kg1 Qh6 89. Ra2 e3 90. Ra3+ Ke2 91. Ra2+ Kf3 92. Rc2 Qd6 93. Rc1 Qg6+ 94. Kf1 Qg2+ 95. Ke1 Qe2# 0-1 [/pgn]

Is the position forced lost for white?

[zullil]

[d]5rk1/5p1p/1p2p1p1/1Bq3b1/4P3/2P1P1Pb/P3QR1P/4R1K1 w - - 2 24

[MikeGL]

[pgn][Event "CCCC 1: Rapid Rumble (15|5) Stage 2"] [Site "Chess.com"] [Date "2018.09.18"] [Round "?"] [White "Booot 6.3.1"] [Black "Lc0 17.11089"] [Result "0-1"] [BlackElo "3283"] [ECO "D87"] [Opening "Grünfeld"] [Time "09:18:25"] [Variation "Classical Exchange, 9.O-O Nc6 10.Be3"] [WhiteElo "3276"] [TimeControl "900+5"] [Termination "normal"] [PlyCount "190"] [WhiteType "human"] [BlackType "human"] 1. d4 d5 2. c4 Nf6 3. cxd5 g6 4. Nc3 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 O-O 8. Ne2 c5 9. O-O Nc6 10. Be3 b6 11. dxc5 Qc7 12. Nd4 Ne5 13. Nb5 Qb8 14. Bd5 Ng4 15. g3 Nxe3 16. fxe3 Bh3 17. Rf2 a6 18. Bxa8 axb5 19. Bd5 e6 20. Bc6 Bh6 21. Qe2 Qc7 22. Bxb5 Qxc5 23. Re1 Bg5 24. Bc4 h5 25. Kh1 Rd8 26. Bb3 Qe5 27. Qf3 Rd7 28. Rc2 Rd3 29. Rf2 Qc7 30. Rc2 b5 31. Rcc1 Qe5 32. Bd1 Rd2 33. Re2 Rd7 34. Re1 Rd2 35. Re2 Bg4 36. Rxd2 Bxf3+ 37. Bxf3 h4 38. gxh4 Bxe3 39. Rd8+ Kg7 40. Rcd1 Bf4 41. Bg2 Bxh2 42. Rf1 Qc7 43. Rd3 Be5 44. Rdf3 f6 45. Rd1 Qc4 46. Rh3 Kh6 47. a3 Qe2 48. Rb1 Qc2 49. Rg1 Bxc3 50. Rf1 Kh7 51. Bf3 Be5 52. Bg2 Bb2 53. Re3 Bc3 54. Rff3 Bd4 55. Re1 Qd2 56. Ref1 Qe2 57. Rc1 Qxe4 58. h5 Qg4 59. hxg6+ Kxg6 60. Rcf1 f5 61. Rh3 Qe2 62. Rc1 Kf6 63. Bf3 Qe3 64. Rd1 e5 65. Bg4 Qf2 66. Rh6+ Ke7 67. Rh7+ Kd6 68. Rh6+ Kc5 69. Rh2 Qg3 70. Be2 Qxa3 71. Rf1 Qe3 72. Bf3 b4 73. Bg2 Qg5 74. Bh3 f4 75. Rg2 Qh5 76. Rh2 f3 77. Be6 Qg6 78. Bd7 b3 79. Bh3 b2 80. Rxb2 Bxb2 81. Rxf3 Bd4 82. Bg4 Qxg4 83. Rg3 Qe6 84. Kh2 e4 85. Rg2 Kc4 86. Kg3 Be5+ 87. Kf2 Kd3 88. Kg1 Qh6 89. Ra2 e3 90. Ra3+ Ke2 91. Ra2+ Kf3 92. Rc2 Qd6 93. Rc1 Qg6+ 94. Kf1 Qg2+ 95. Ke1 Qe2# 0-1 [/pgn]

Is the position forced lost for white?

[d]5rk1/5p1p/1p2p1p1/1Bq3b1/4P3/2P1P1Pb/P3QR1P/4R1K1 w - - 2 24


According to SF Dev version, the above position (before 24.Bc4) is around +1.74 at shallow search but
keeps on dropping bit by bit until it settles down to around +0.10 for white.
Probably would end up like 0.00 on very deep search, but I analyzed many months ago some AlphaZero games too and the
score given by SF was 0.00 but ends up losing for SF.
This is a head-scratcher, A-B engine always giving 0.00 but endgame leads to a win for AlphaZero and Lc0.

In my opinion, Black is really ahead due to piece activity in compensation for blacks material deficit (B vs. R).
Ok, white is up in material but has a passively placed major pieces defending only whites' scattered pawns and creating zero threats against blacks camp.

[zullil]

[pgn][Event "CCCC 1: Rapid Rumble (15|5) Stage 2"] [Site "Chess.com"] [Date "2018.09.18"] [Round "?"] [White "Booot 6.3.1"] [Black "Lc0 17.11089"] [Result "0-1"] [BlackElo "3283"] [ECO "D87"] [Opening "Grünfeld"] [Time "09:18:25"] [Variation "Classical Exchange, 9.O-O Nc6 10.Be3"] [WhiteElo "3276"] [TimeControl "900+5"] [Termination "normal"] [PlyCount "190"] [WhiteType "human"] [BlackType "human"] 1. d4 d5 2. c4 Nf6 3. cxd5 g6 4. Nc3 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 O-O 8. Ne2 c5 9. O-O Nc6 10. Be3 b6 11. dxc5 Qc7 12. Nd4 Ne5 13. Nb5 Qb8 14. Bd5 Ng4 15. g3 Nxe3 16. fxe3 Bh3 17. Rf2 a6 18. Bxa8 axb5 19. Bd5 e6 20. Bc6 Bh6 21. Qe2 Qc7 22. Bxb5 Qxc5 23. Re1 Bg5 24. Bc4 h5 25. Kh1 Rd8 26. Bb3 Qe5 27. Qf3 Rd7 28. Rc2 Rd3 29. Rf2 Qc7 30. Rc2 b5 31. Rcc1 Qe5 32. Bd1 Rd2 33. Re2 Rd7 34. Re1 Rd2 35. Re2 Bg4 36. Rxd2 Bxf3+ 37. Bxf3 h4 38. gxh4 Bxe3 39. Rd8+ Kg7 40. Rcd1 Bf4 41. Bg2 Bxh2 42. Rf1 Qc7 43. Rd3 Be5 44. Rdf3 f6 45. Rd1 Qc4 46. Rh3 Kh6 47. a3 Qe2 48. Rb1 Qc2 49. Rg1 Bxc3 50. Rf1 Kh7 51. Bf3 Be5 52. Bg2 Bb2 53. Re3 Bc3 54. Rff3 Bd4 55. Re1 Qd2 56. Ref1 Qe2 57. Rc1 Qxe4 58. h5 Qg4 59. hxg6+ Kxg6 60. Rcf1 f5 61. Rh3 Qe2 62. Rc1 Kf6 63. Bf3 Qe3 64. Rd1 e5 65. Bg4 Qf2 66. Rh6+ Ke7 67. Rh7+ Kd6 68. Rh6+ Kc5 69. Rh2 Qg3 70. Be2 Qxa3 71. Rf1 Qe3 72. Bf3 b4 73. Bg2 Qg5 74. Bh3 f4 75. Rg2 Qh5 76. Rh2 f3 77. Be6 Qg6 78. Bd7 b3 79. Bh3 b2 80. Rxb2 Bxb2 81. Rxf3 Bd4 82. Bg4 Qxg4 83. Rg3 Qe6 84. Kh2 e4 85. Rg2 Kc4 86. Kg3 Be5+ 87. Kf2 Kd3 88. Kg1 Qh6 89. Ra2 e3 90. Ra3+ Ke2 91. Ra2+ Kf3 92. Rc2 Qd6 93. Rc1 Qg6+ 94. Kf1 Qg2+ 95. Ke1 Qe2# 0-1 [/pgn]

Is the position forced lost for white?

Cfish says nothing here for Black after 24. a4 h5 25. Kh1 Bg4 26. Qc4 Bxe3 27. Qxc5 Bxc5 28. Rff1 Rd8 29. Be2 Bh3 30. Rf3 Bg4

[MikeGL]

[pgn][Event "CCCC 1: Rapid Rumble (15|5) Stage 2"] [Site "Chess.com"] [Date "2018.09.18"] [Round "?"] [White "Booot 6.3.1"] [Black "Lc0 17.11089"] [Result "0-1"] [BlackElo "3283"] [ECO "D87"] [Opening "Grünfeld"] [Time "09:18:25"] [Variation "Classical Exchange, 9.O-O Nc6 10.Be3"] [WhiteElo "3276"] [TimeControl "900+5"] [Termination "normal"] [PlyCount "190"] [WhiteType "human"] [BlackType "human"] 1. d4 d5 2. c4 Nf6 3. cxd5 g6 4. Nc3 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 O-O 8. Ne2 c5 9. O-O Nc6 10. Be3 b6 11. dxc5 Qc7 12. Nd4 Ne5 13. Nb5 Qb8 14. Bd5 Ng4 15. g3 Nxe3 16. fxe3 Bh3 17. Rf2 a6 18. Bxa8 axb5 19. Bd5 e6 20. Bc6 Bh6 21. Qe2 Qc7 22. Bxb5 Qxc5 23. Re1 Bg5 24. Bc4 h5 25. Kh1 Rd8 26. Bb3 Qe5 27. Qf3 Rd7 28. Rc2 Rd3 29. Rf2 Qc7 30. Rc2 b5 31. Rcc1 Qe5 32. Bd1 Rd2 33. Re2 Rd7 34. Re1 Rd2 35. Re2 Bg4 36. Rxd2 Bxf3+ 37. Bxf3 h4 38. gxh4 Bxe3 39. Rd8+ Kg7 40. Rcd1 Bf4 41. Bg2 Bxh2 42. Rf1 Qc7 43. Rd3 Be5 44. Rdf3 f6 45. Rd1 Qc4 46. Rh3 Kh6 47. a3 Qe2 48. Rb1 Qc2 49. Rg1 Bxc3 50. Rf1 Kh7 51. Bf3 Be5 52. Bg2 Bb2 53. Re3 Bc3 54. Rff3 Bd4 55. Re1 Qd2 56. Ref1 Qe2 57. Rc1 Qxe4 58. h5 Qg4 59. hxg6+ Kxg6 60. Rcf1 f5 61. Rh3 Qe2 62. Rc1 Kf6 63. Bf3 Qe3 64. Rd1 e5 65. Bg4 Qf2 66. Rh6+ Ke7 67. Rh7+ Kd6 68. Rh6+ Kc5 69. Rh2 Qg3 70. Be2 Qxa3 71. Rf1 Qe3 72. Bf3 b4 73. Bg2 Qg5 74. Bh3 f4 75. Rg2 Qh5 76. Rh2 f3 77. Be6 Qg6 78. Bd7 b3 79. Bh3 b2 80. Rxb2 Bxb2 81. Rxf3 Bd4 82. Bg4 Qxg4 83. Rg3 Qe6 84. Kh2 e4 85. Rg2 Kc4 86. Kg3 Be5+ 87. Kf2 Kd3 88. Kg1 Qh6 89. Ra2 e3 90. Ra3+ Ke2 91. Ra2+ Kf3 92. Rc2 Qd6 93. Rc1 Qg6+ 94. Kf1 Qg2+ 95. Ke1 Qe2# 0-1 [/pgn]

Is the position forced lost for white?

Cfish says nothing here for Black after 24. a4 h5 25. Kh1 Bg4 26. Qc4 Bxe3 27. Qxc5 Bxc5 28. Rff1 Rd8 29. Be2 Bh3 30. Rf3 Bg4

Thanks for the Cfish line, but I checked it and SF Dev shows around +2.xx in advantage after 30.Rf3 there's 30...Rd2 and SF prefers black at this point.
[pgn] [Event "?"] [Site "?"] [Date "2018.09.19"] [Round "?"] [White "?"] [Black "SF9Dev"] [Result "*"] [BlackElo "2400"] [WhiteElo "2400"] [TimeControl "900+5"] [SetUp "1"] [FEN "5rk1/5p1p/1p2p1p1/1Bq3b1/4P3/2P1P1Pb/P3QR1P/4R1K1 w - - 2 24"] [Termination "unterminated"] [PlyCount "14"] [WhiteType "human"] [BlackType "human"] 24. a4 h5 25. Kh1 Bg4 26. Qc4 Bxe3 27. Qxc5 Bxc5 28. Ref1 Rd8 29. Be2 Bh3 30. Rf3 Rd2 [/pgn]

[Event "?"]
[Site "?"]
[Date "2018.09.19"]
[Round "?"]
[White "?"]
[Black "SF9DevVer"]
[Result "*"]
[BlackElo "2400"]
[WhiteElo "2400"]
[TimeControl "900+5"]
[SetUp "1"]
[FEN "5rk1/5p1p/1p2p1p1/1Bq3b1/4P3/2P1P1Pb/P3QR1P/4R1K1 w - - 2 24"]
[Termination "unterminated"]
[PlyCount "14"]
[WhiteType "human"]
[BlackType "human"]

24. a4 h5 25. Kh1 Bg4 26. Qc4 Bxe3 27. Qxc5 Bxc5 28. Ref1 Rd8 29. Be2 Bh3 30. Rf3 Rd2

[zullil]

Thanks for the Cfish line, but I checked it and SF Dev shows around +2.xx in advantage after 30.Rf3 there's 30...Rd2 and SF prefers black at this point.

You've confused the colors. 30...Rd2 loses for Black.

[MikeGL]

I checked again. MultiPV shows the following:

Code: Select all

 24/41	+2.00	Rd2 Re1 Bg4 Kg2 Rc2 e5 Bxf3+ Kxf3 Rxc3+ Kg2 Re3 Kf1 Rxe5 Bf3 Rf5 Kg2 Kg7 Re2 Bd4 Rd2 Bf6 Rc2 Re5 Rc6 Ra5 Bd1 Rd5 Be2 Rd2 Kf3 Bd8 Kf2 Kf6 Kf1
 24/39	+1.40	Bxf1 Rxf1 Rd2 Bb5 Kf8 Rf3 g5 h3 Rc2 e5 Rc1+ Rf1 Rxc3 Be2 g4 hxg4 Rxg3 gxh5 Re3 Bf3 Rxe5 h6 Kg8 Rd1 Rg5 Rd7 Rg3 h7+ Kxh7 Rxf7+ Kg6 Kh2
 24/36	+0.42	Ra8 Rxf7 Rxa4 R7f4 e5 Rf6 Bxf1 Rxf1 Kg7 Bd3 Ra3 Bb5 Rxc3 Be8 Rd3 Rf7+ Kh6 Rf6 Rd1+ Kg2 Rd6 Rxd6 Bxd6 Kf3 Kg7 h4 Be7 Bd7 Kf7 Bb5 Kf6
 24/30	0.00	Rd6 Re1 Bg4 Rff1 Bh3
 24/42	0.00	Kg7 Rd1 Ra8 Rd7 Rxa4 Rfxf7+ Kh6 Rd1 e5 Bf1 Be6 Rb7 Rxe4 h4 Re3 Bg2 Bb3 Rd8 Re1+ Kh2 Bg1+ Kh1
 24/47	-0.10	e5 Rd1 Ra8 Bc4 Rxa4 Bxf7+ Kg7 Bd5 Ra3 Rc1 Kh6 Bf7 Bg4 Rf6 Kg7 Rcf1 Rxc3 Rxg6+ Kh7 h4 Bf3+ Rxf3 Rxf3 Be8 Be3 Re6 Rxg3 Rxe5 Rg1+ Kh2 Bf4+ Kxg1 Bxe5 Bxh5 Kg7 Kf2 Kf6 Be8 Ke7
 24/37	-0.27	g5 Re1 Bg4 Rff1 Bh3 Rd1 Ra8 Bxh5 Bxf1 Rxf1 Rxa4 Bxf7+ Kg7 Bxe6 Rxe4 Rf7+ Kg6 Bf5+ Kxf7 Bxe4 Ke6 Bf3 Bd6 Kg2 Kf5 c4 Be5 Bd5 Bd4 h3 g4 hxg4+ Kxg4 Bf3+ Kf5 Kh3

Therefore 30...Rd2 gives a +2.00 advantage for black and 30...g5 (last line above) is a weaker move with -0.27 for black according to SF Dev Ver.
Black is slightly ahead in my opinion with +2.00 eval score.

Thanks for the Cfish line, but I checked it and SF Dev shows around +2.xx in advantage after 30.Rf3 there's 30...Rd2 and SF prefers black at this point.

You've confused the colors. 30...Rd2 loses for Black.

[zullil]

I checked again. MultiPV shows the following:

Code: Select all

 24/41	+2.00	Rd2 Re1 Bg4 Kg2 Rc2 e5 Bxf3+ Kxf3 Rxc3+ Kg2 Re3 Kf1 Rxe5 Bf3 Rf5 Kg2 Kg7 Re2 Bd4 Rd2 Bf6 Rc2 Re5 Rc6 Ra5 Bd1 Rd5 Be2 Rd2 Kf3 Bd8 Kf2 Kf6 Kf1
 24/39	+1.40	Bxf1 Rxf1 Rd2 Bb5 Kf8 Rf3 g5 h3 Rc2 e5 Rc1+ Rf1 Rxc3 Be2 g4 hxg4 Rxg3 gxh5 Re3 Bf3 Rxe5 h6 Kg8 Rd1 Rg5 Rd7 Rg3 h7+ Kxh7 Rxf7+ Kg6 Kh2
 24/36	+0.42	Ra8 Rxf7 Rxa4 R7f4 e5 Rf6 Bxf1 Rxf1 Kg7 Bd3 Ra3 Bb5 Rxc3 Be8 Rd3 Rf7+ Kh6 Rf6 Rd1+ Kg2 Rd6 Rxd6 Bxd6 Kf3 Kg7 h4 Be7 Bd7 Kf7 Bb5 Kf6
 24/30	0.00	Rd6 Re1 Bg4 Rff1 Bh3
 24/42	0.00	Kg7 Rd1 Ra8 Rd7 Rxa4 Rfxf7+ Kh6 Rd1 e5 Bf1 Be6 Rb7 Rxe4 h4 Re3 Bg2 Bb3 Rd8 Re1+ Kh2 Bg1+ Kh1
 24/47	-0.10	e5 Rd1 Ra8 Bc4 Rxa4 Bxf7+ Kg7 Bd5 Ra3 Rc1 Kh6 Bf7 Bg4 Rf6 Kg7 Rcf1 Rxc3 Rxg6+ Kh7 h4 Bf3+ Rxf3 Rxf3 Be8 Be3 Re6 Rxg3 Rxe5 Rg1+ Kh2 Bf4+ Kxg1 Bxe5 Bxh5 Kg7 Kf2 Kf6 Be8 Ke7
 24/37	-0.27	g5 Re1 Bg4 Rff1 Bh3 Rd1 Ra8 Bxh5 Bxf1 Rxf1 Rxa4 Bxf7+ Kg7 Bxe6 Rxe4 Rf7+ Kg6 Bf5+ Kxf7 Bxe4 Ke6 Bf3 Bd6 Kg2 Kf5 c4 Be5 Bd5 Bd4 h3 g4 hxg4+ Kxg4 Bf3+ Kf5 Kh3

Therefore 30...Rd2 gives a +2.00 advantage for black and 30...g5 (last line above) is a weaker move with -0.27 for black according to SF Dev Ver.
Black is slightly ahead in my opinion with +2.00 eval score.

Thanks for the Cfish line, but I checked it and SF Dev shows around +2.xx in advantage after 30.Rf3 there's 30...Rd2 and SF prefers black at this point.

You've confused the colors. 30...Rd2 loses for Black.

Oh. Your error was earlier. You moved the wrong rook at White's 28.

[peter]

Hi Louis!

Cfish says nothing here for Black after 24. a4 h5 25. Kh1 Bg4 26. Qc4 Bxe3 27. Qxc5 Bxc5 28. Rff1 Rd8 29. Be2 Bh3 30. Rf3 Bg4

Output after Backward of your line and 24.a4:

[d]5rk1/5p1p/1p2p1p1/1Bq3b1/P3P3/2P1P1Pb/4QR1P/4R1K1 b - - 0 1

Analysis by Cfish 100918 x64 POPCNT N:

24...h5 25.Kh1 Lg4 26.Dd3 Td8 27.Df1 Lxe3 28.Txf7 Dxc3 29.Tf6 Kg7 30.Tf7+
= (0.00) Tiefe: 55/13 00:08:12 11864MN, tb=8491838

Sorry for german abbrevations, was too late for me to change and wait for next iteration.

After Backward of the game- continuation up to move 27.Qf3 (?), where the (indeed rather dynamic) balance got really lost , there eval jumps from -0.1 (Rd1) to -1.0.
Back at the position after 24.Bc4(?!):

[d]5rk1/5p1p/1p2p1p1/2q3b1/2B1P3/2P1P1Pb/P3QR1P/4R1K1 b - - 0 1

Analysis by Cfish 100918 x64 POPCNT N:

24...Rd8 25.Kh1 h5 26.Bb3 Qe5 27.Rd1 Qxe4+ 28.Qf3 Qxf3+ 29.Rxf3 Rc8 30.Rf2 Rxc3 31.Re1 Kg7 32.Rc2 Rd3 33.Bc4 Rxe3 34.Rxe3 Bxe3 35.Bd3 e5 36.Rc3 Bd4 37.Rc1 Kh6 38.Bf1 Be6 39.Bc4 Bf5 40.h4 Be4+ 41.Kh2 f5 42.Bb3 g5 43.hxg5+ Kxg5 44.Rc8 f4 45.gxf4+ Kxf4 46.Rf8+ Kg5 47.Rg8+ Kh4 48.Bd1 Be3 49.Rh8 Bg6 50.Rg8 Bf5 51.Re8 Bd4 52.Rh8 Bg6 53.Rg8 Bf7 54.Rf8 Be6 55.Rh8 Kg5 56.Rxh5+ Kf4 57.Rh4+ Ke3 58.Kg2 Bd5+ 59.Kf1
= (-0.09) Depth: 51/71 00:10:51 15643MN, tb=4519582

[tpoppins]

Neither Houdini Tactical nor Komodo MCTS is unduly concerned about White's position:

Code: Select all

Analysis by Komodo 12.1.1 MCTS 64-bit:

1. = (0.09): 24.c4 Rd8 25.Qf3 f6 26.Rb2 Rd3 27.Rbb1 h5 28.e5 Rxe3 29.Qf2 Qxe5 30.Bc6 Bf5 31.Ra1 Qc5 32.Bb7 Kg7 33.Kg2 Qa3 34.Kh1 e5 35.Bd5 Qc5 36.Qg2 Ra3 37.Be4 Bg4 
2. = (0.09): 24.Kh1 Rd8 25.a3 h5 26.Qf3 f6 27.Rb1 Bg4 28.Qg2 Bxe3 29.Rxf6 Kg7 30.Qf1 Qe7 31.Rf2 e5 32.Rc2 Rf8 33.Qd3 Bc5 34.Rg2 Bxa3 35.Bc4 Bf3 36.Rf1 Bxg2+ 37.Kxg2 Rxf1 38.Qxf1 h4 
Depth: 38/53   63382 kN

Code: Select all

Analysis by Houdini 6.03 Pro x64-popcnt (Tactical=1):

24.a4 h5 25.Kh1 Qe5 26.Qc4 h4 27.Qd4 Qc7 28.Qd7 Qxc3 29.Qd2 Qe5 30.Qd4 Qc7 31.Qd7 Qc3 
  = (0.00)  Depth: 49/95   03:21:04  498575MN, tb=82393570