Can Komodo give a Queen to a 1500 chess Engine on CCRL?

[bob]

But against another 1600 rated player Komodo lost very quickly, and I lost $25.00. This is using my Laptop Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz with 15.9 GB Memory

[pgn][Event "Queen Odds"]
[Site "Philippines Chess Club"]
[Date "2021.09.05"]
[Round "2"]
[White "Komodo-13.3-64bit-bmi2"]
[Black "Jose"]
[Result "0-1"]
[BlackElo "1600"]
[Time "08:09:17"]
[WhiteElo "3470"]
[TimeControl "300+3"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNB1KBNR w KQkq - 0 1"]
[Termination "normal"]
[PlyCount "43"]
[WhiteType "program"]
[BlackType "human"]

1. d4 Nf6 2. Bf4 d5 3. Nf3 Nc6 4. e3 Bg4 5. Nbd2 Bxf3 6. gxf3 Nh5 7. Bg3
Nxg3 8. hxg3 e5 9. O-O-O exd4 10. exd4 Nxd4 11. Re1+ Be7 12. c3 Ne6 13. Re5
O-O 14. f4 Bf6 15. Reh5 h6 16. Rxh6 gxh6 17. Kd1 Bg7 18. f3 c5 19. Kc2 d4
20. Bc4 dxc3 21. bxc3 {White resigns} Qd6 22. Ne4 {White resigns} *[/pgn]

This is strange because the blunder 16. Rxh6?? makes no sense, I can't replicate it at any time or depth with K14.1 (I don't have 13.3 on my laptop). Were you perhaps using MCTS? I think MCTS just falls apart completely when down a huge amount like this. I would only use MCTS for handicap play if the handicap is not more than a rook, if the time control is Rapid rather than blitz, and if the number of threads is at least four.

You might investigate how the rating was forced that low? Doesn't take a whole lot of randomnesss to introduce a gross blunder when the randomness is given a high probability to produce really low ratings.

[lkaufman]

But against another 1600 rated player Komodo lost very quickly, and I lost $25.00. This is using my Laptop Intel(R) Core(TM) i7-4770 CPU @ 3.40GHz with 15.9 GB Memory

[pgn][Event "Queen Odds"]
[Site "Philippines Chess Club"]
[Date "2021.09.05"]
[Round "2"]
[White "Komodo-13.3-64bit-bmi2"]
[Black "Jose"]
[Result "0-1"]
[BlackElo "1600"]
[Time "08:09:17"]
[WhiteElo "3470"]
[TimeControl "300+3"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNB1KBNR w KQkq - 0 1"]
[Termination "normal"]
[PlyCount "43"]
[WhiteType "program"]
[BlackType "human"]

1. d4 Nf6 2. Bf4 d5 3. Nf3 Nc6 4. e3 Bg4 5. Nbd2 Bxf3 6. gxf3 Nh5 7. Bg3
Nxg3 8. hxg3 e5 9. O-O-O exd4 10. exd4 Nxd4 11. Re1+ Be7 12. c3 Ne6 13. Re5
O-O 14. f4 Bf6 15. Reh5 h6 16. Rxh6 gxh6 17. Kd1 Bg7 18. f3 c5 19. Kc2 d4
20. Bc4 dxc3 21. bxc3 {White resigns} Qd6 22. Ne4 {White resigns} *[/pgn]

This is strange because the blunder 16. Rxh6?? makes no sense, I can't replicate it at any time or depth with K14.1 (I don't have 13.3 on my laptop). Were you perhaps using MCTS? I think MCTS just falls apart completely when down a huge amount like this. I would only use MCTS for handicap play if the handicap is not more than a rook, if the time control is Rapid rather than blitz, and if the number of threads is at least four.

You might investigate how the rating was forced that low? Doesn't take a whole lot of randomnesss to introduce a gross blunder when the randomness is given a high probability to produce really low ratings.

I think you misunderstand something here. White is full strength Komodo giving queen odds; Black is a human. There is no forced low rating or randomness involved. The explanation turned out to be that Komodo was in MCTS mode, which works fine when down a piece or so, but when down a queen or more it is apt to make crazy sacrifices on the theory that one chance in a million is better than none at all!

[Chessqueen]

I believe that I found Stockfish match when giving a Knight Odds, it is around 2150 to 2160 since this engine Knockout is rated 2153 by CCRL, another observation is that the latest Stockfish is not bad at giving Knight Odds it is doing very good holding Expert programs, just like Komodo Dragon2, remember I am only using a mere intel i7 3.40 GHz with 4 cores not the same system that you use when giving Knight odds to GM rated between 2550 to 2600. I know a friend from the Dom. Republic who is rated 2188 by FIDE he agreed to play vs Dragon2 at Knight Odds using Skype TC 30'+10", But I will need to get the Knight Odds opening for Dragon2, where I can download the Knight Odds Opening ?
https://ratings.fide.com/profile/6400442

[pgn][Event "Knight Odds"]
[Site "MININT-UB2PIMJ"]
[Date "2021.09.08"]
[Round "?"]
[White "Stockfish_14_x64_bmi2"]
[Black "Knockout"]
[Result "1/2-1/2"]
[BlackElo "2152"]
[Time "20:28:52"]
[WhiteElo "3580"]
[TimeControl "900+10"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKB1R w KQkq - 0 1"]
[Termination "normal"]
[PlyCount "229"]
[WhiteType "program"]
[BlackType "program"]

1. e4 Nc6 2. d4 d5 3. Bb5 dxe4 4. c4 Nf6 5. d5 a6 6. Ba4 b5 7. dxc6 bxa4 8.
Qxd8+ Kxd8 9. Nc3 Be6 10. b3 axb3 11. axb3 Rb8 12. Rxa6 Bc8 13. Ra2 Rxb3
14. Rd2+ Ke8 15. Nb5 Rd3 16. Nxc7+ Kd8 17. Nb5 e5 18. c7+ Kd7 19. Ke2 Bc5
20. Rhd1 Rxd2+ 21. Bxd2 Ke7 22. Be3 Bxe3 23. Kxe3 Ng4+ 24. Ke2 Nxh2 25. Rd5
Bg4+ 26. Kd2 f6 27. Na7 Ra8 28. Nc6+ Kf7 29. Kc3 e3 30. fxe3 Rc8 31. Rc5
Nf1 32. Na7 Ra8 33. c8=Q Bxc8 34. Nxc8 Nxe3 35. Rc7+ Kf8 36. g3 Ra3+ 37.
Kb2 Rd3 38. c5 Nc4+ 39. Kc2 Rxg3 40. Rb7 Rg4 41. Kd3 Na5 42. Rb5 Nc6 43.
Rb6 Nb4+ 44. Ke2 Nd5 45. c6 Rg2+ 46. Kd1 Kg8 47. Rb7 Rg3 48. Ne7+ Nxe7 49.
Rxe7 Kf8 50. c7 Rc3 51. Rd7 Kg8 52. Kd2 Rc6 53. Rd8+ Kf7 54. c8=Q Rxc8 55.
Rxc8 h5 56. Rc1 Ke6 57. Ke3 g5 58. Kf3 f5 59. Rc6+ Kf7 60. Rh6 h4 61. Ke3
Kg7 62. Re6 e4 63. Rc6 h3 64. Rc2 Kf6 65. Rh2 g4 66. Kf4 Kg6 67. Rb2 Kf6
68. Rh2 Kg6 69. Rb2 Kf6 70. Ra2 Kg7 71. Ra6 Kf7 72. Ra1 Kg6 73. Ra6+ Kf7
74. Rh6 Kg7 75. Rh5 Kg6 76. Rg5+ Kh6 77. Rg8 Kh7 78. Ra8 Kg7 79. Ra7+ Kf6
80. Ra1 Kg6 81. Rd1 Kf6 82. Rh1 Kg6 83. Re1 Kf6 84. Rf1 Ke6 85. Rc1 Kf6 86.
Rc5 Kg6 87. Rc1 Kf6 88. Rd1 Ke6 89. Ra1 Kf6 90. Re1 Ke6 91. Ra1 Kf6 92. Ra8
Kg7 93. Rb8 Kh7 94. Rb1 Kg6 95. Rb5 Kh6 96. Rb1 Kg6 97. Rb6+ Kg7 98. Rb5
Kh6 99. Rb6+ Kg7 100. Rd6 Kf7 101. Rh6 Kg7 102. Rh4 Kg6 103. Rh8 Kg7 104.
Rh5 Kg6 105. Rh8 Kg7 106. Rd8 Kf7 107. Rd6 Kg7 108. Rd8 Kf7 109. Rd1 Ke6
110. Re1 Kf6 111. Rf1 Ke6 112. Rd1 Kf6 113. Re1 Ke6 114. Rh1 Kf6 115. Rh2
{3-fold repetition} 1/2-1/2[/pgn]

[lkaufman]

I believe that I found Stockfish match when giving a Knight Odds, it is around 2150 to 2160 since this engine Knockout is rated 2153 by CCRL, another observation is that the latest Stockfish is not bad at giving Knight Odds it is doing very good holding Expert programs, just like Komodo Dragon2, remember I am only using a mere intel i7 3.40 GHz with 4 cores not the same system that you use when giving Knight odds to GM rated between 2550 to 2600. I know a friend from the Dom. Republic who is rated 2188 by FIDE he agreed to play vs Dragon2 at Knight Odds using Skype TC 30'+10", But I will need to get the Knight Odds opening for Dragon2, where I can download the Knight Odds Opening ?
https://ratings.fide.com/profile/6400442

[pgn][Event "Knight Odds"]
[Site "MININT-UB2PIMJ"]
[Date "2021.09.08"]
[Round "?"]
[White "Stockfish_14_x64_bmi2"]
[Black "Knockout"]
[Result "1/2-1/2"]
[BlackElo "2152"]
[Time "20:28:52"]
[WhiteElo "3580"]
[TimeControl "900+10"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKB1R w KQkq - 0 1"]
[Termination "normal"]
[PlyCount "229"]
[WhiteType "program"]
[BlackType "program"]

1. e4 Nc6 2. d4 d5 3. Bb5 dxe4 4. c4 Nf6 5. d5 a6 6. Ba4 b5 7. dxc6 bxa4 8.
Qxd8+ Kxd8 9. Nc3 Be6 10. b3 axb3 11. axb3 Rb8 12. Rxa6 Bc8 13. Ra2 Rxb3
14. Rd2+ Ke8 15. Nb5 Rd3 16. Nxc7+ Kd8 17. Nb5 e5 18. c7+ Kd7 19. Ke2 Bc5
20. Rhd1 Rxd2+ 21. Bxd2 Ke7 22. Be3 Bxe3 23. Kxe3 Ng4+ 24. Ke2 Nxh2 25. Rd5
Bg4+ 26. Kd2 f6 27. Na7 Ra8 28. Nc6+ Kf7 29. Kc3 e3 30. fxe3 Rc8 31. Rc5
Nf1 32. Na7 Ra8 33. c8=Q Bxc8 34. Nxc8 Nxe3 35. Rc7+ Kf8 36. g3 Ra3+ 37.
Kb2 Rd3 38. c5 Nc4+ 39. Kc2 Rxg3 40. Rb7 Rg4 41. Kd3 Na5 42. Rb5 Nc6 43.
Rb6 Nb4+ 44. Ke2 Nd5 45. c6 Rg2+ 46. Kd1 Kg8 47. Rb7 Rg3 48. Ne7+ Nxe7 49.
Rxe7 Kf8 50. c7 Rc3 51. Rd7 Kg8 52. Kd2 Rc6 53. Rd8+ Kf7 54. c8=Q Rxc8 55.
Rxc8 h5 56. Rc1 Ke6 57. Ke3 g5 58. Kf3 f5 59. Rc6+ Kf7 60. Rh6 h4 61. Ke3
Kg7 62. Re6 e4 63. Rc6 h3 64. Rc2 Kf6 65. Rh2 g4 66. Kf4 Kg6 67. Rb2 Kf6
68. Rh2 Kg6 69. Rb2 Kf6 70. Ra2 Kg7 71. Ra6 Kf7 72. Ra1 Kg6 73. Ra6+ Kf7
74. Rh6 Kg7 75. Rh5 Kg6 76. Rg5+ Kh6 77. Rg8 Kh7 78. Ra8 Kg7 79. Ra7+ Kf6
80. Ra1 Kg6 81. Rd1 Kf6 82. Rh1 Kg6 83. Re1 Kf6 84. Rf1 Ke6 85. Rc1 Kf6 86.
Rc5 Kg6 87. Rc1 Kf6 88. Rd1 Ke6 89. Ra1 Kf6 90. Re1 Ke6 91. Ra1 Kf6 92. Ra8
Kg7 93. Rb8 Kh7 94. Rb1 Kg6 95. Rb5 Kh6 96. Rb1 Kg6 97. Rb6+ Kg7 98. Rb5
Kh6 99. Rb6+ Kg7 100. Rd6 Kf7 101. Rh6 Kg7 102. Rh4 Kg6 103. Rh8 Kg7 104.
Rh5 Kg6 105. Rh8 Kg7 106. Rd8 Kf7 107. Rd6 Kg7 108. Rd8 Kf7 109. Rd1 Ke6
110. Re1 Kf6 111. Rf1 Ke6 112. Rd1 Kf6 113. Re1 Ke6 114. Rh1 Kf6 115. Rh2
{3-fold repetition} 1/2-1/2[/pgn]

MCTS and multi-thread is not helpful for giving knight odds or more to engines, only to humans. At 10' + 5", using just ONE THREAD on my laptop, Dragon 2 (Contempt 100) performed at CCRL Rapid 2650 in 600 games here giving knight odds to strong engines (Rybka 1, Fruit 2.2.1, and Benjamin 1.0). It might drop a bit to 2600 at 15' + 10". Try it yourself against engines near 2600 CCRL Rapid using just one thread, no MCTS, Contempt 100. Hardware makes no difference at all for this, in fact faster hardware will probably hurt (in standard mode). I don't yet know how single thread no MCTS will do vs. humans, probably pretty well I think. The opening book is private, it's hard enough to give knight odds to GMs without giving them the book as well (I did give the book to David Smerdon, but it was much more primitive at that time). After all they don't send me their opening preparation!

[Chessqueen]

I believe that I found Stockfish match when giving a Knight Odds, it is around 2150 to 2160 since this engine Knockout is rated 2153 by CCRL, another observation is that the latest Stockfish is not bad at giving Knight Odds it is doing very good holding Expert programs, just like Komodo Dragon2, remember I am only using a mere intel i7 3.40 GHz with 4 cores not the same system that you use when giving Knight odds to GM rated between 2550 to 2600. I know a friend from the Dom. Republic who is rated 2188 by FIDE he agreed to play vs Dragon2 at Knight Odds using Skype TC 30'+10", But I will need to get the Knight Odds opening for Dragon2, where I can download the Knight Odds Opening ?
https://ratings.fide.com/profile/6400442

[pgn][Event "Knight Odds"]
[Site "MININT-UB2PIMJ"]
[Date "2021.09.08"]
[Round "?"]
[White "Stockfish_14_x64_bmi2"]
[Black "Knockout"]
[Result "1/2-1/2"]
[BlackElo "2152"]
[Time "20:28:52"]
[WhiteElo "3580"]
[TimeControl "900+10"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKB1R w KQkq - 0 1"]
[Termination "normal"]
[PlyCount "229"]
[WhiteType "program"]
[BlackType "program"]

1. e4 Nc6 2. d4 d5 3. Bb5 dxe4 4. c4 Nf6 5. d5 a6 6. Ba4 b5 7. dxc6 bxa4 8.
Qxd8+ Kxd8 9. Nc3 Be6 10. b3 axb3 11. axb3 Rb8 12. Rxa6 Bc8 13. Ra2 Rxb3
14. Rd2+ Ke8 15. Nb5 Rd3 16. Nxc7+ Kd8 17. Nb5 e5 18. c7+ Kd7 19. Ke2 Bc5
20. Rhd1 Rxd2+ 21. Bxd2 Ke7 22. Be3 Bxe3 23. Kxe3 Ng4+ 24. Ke2 Nxh2 25. Rd5
Bg4+ 26. Kd2 f6 27. Na7 Ra8 28. Nc6+ Kf7 29. Kc3 e3 30. fxe3 Rc8 31. Rc5
Nf1 32. Na7 Ra8 33. c8=Q Bxc8 34. Nxc8 Nxe3 35. Rc7+ Kf8 36. g3 Ra3+ 37.
Kb2 Rd3 38. c5 Nc4+ 39. Kc2 Rxg3 40. Rb7 Rg4 41. Kd3 Na5 42. Rb5 Nc6 43.
Rb6 Nb4+ 44. Ke2 Nd5 45. c6 Rg2+ 46. Kd1 Kg8 47. Rb7 Rg3 48. Ne7+ Nxe7 49.
Rxe7 Kf8 50. c7 Rc3 51. Rd7 Kg8 52. Kd2 Rc6 53. Rd8+ Kf7 54. c8=Q Rxc8 55.
Rxc8 h5 56. Rc1 Ke6 57. Ke3 g5 58. Kf3 f5 59. Rc6+ Kf7 60. Rh6 h4 61. Ke3
Kg7 62. Re6 e4 63. Rc6 h3 64. Rc2 Kf6 65. Rh2 g4 66. Kf4 Kg6 67. Rb2 Kf6
68. Rh2 Kg6 69. Rb2 Kf6 70. Ra2 Kg7 71. Ra6 Kf7 72. Ra1 Kg6 73. Ra6+ Kf7
74. Rh6 Kg7 75. Rh5 Kg6 76. Rg5+ Kh6 77. Rg8 Kh7 78. Ra8 Kg7 79. Ra7+ Kf6
80. Ra1 Kg6 81. Rd1 Kf6 82. Rh1 Kg6 83. Re1 Kf6 84. Rf1 Ke6 85. Rc1 Kf6 86.
Rc5 Kg6 87. Rc1 Kf6 88. Rd1 Ke6 89. Ra1 Kf6 90. Re1 Ke6 91. Ra1 Kf6 92. Ra8
Kg7 93. Rb8 Kh7 94. Rb1 Kg6 95. Rb5 Kh6 96. Rb1 Kg6 97. Rb6+ Kg7 98. Rb5
Kh6 99. Rb6+ Kg7 100. Rd6 Kf7 101. Rh6 Kg7 102. Rh4 Kg6 103. Rh8 Kg7 104.
Rh5 Kg6 105. Rh8 Kg7 106. Rd8 Kf7 107. Rd6 Kg7 108. Rd8 Kf7 109. Rd1 Ke6
110. Re1 Kf6 111. Rf1 Ke6 112. Rd1 Kf6 113. Re1 Ke6 114. Rh1 Kf6 115. Rh2
{3-fold repetition} 1/2-1/2[/pgn]

MCTS and multi-thread is not helpful for giving knight odds or more to engines, only to humans. At 10' + 5", using just ONE THREAD on my laptop, Dragon 2 (Contempt 100) performed at CCRL Rapid 2650 in 600 games here giving knight odds to strong engines (Rybka 1, Fruit 2.2.1, and Benjamin 1.0). It might drop a bit to 2600 at 15' + 10". Try it yourself against engines near 2600 CCRL Rapid using just one thread, no MCTS, Contempt 100. Hardware makes no difference at all for this, in fact faster hardware will probably hurt (in standard mode). I don't yet know how single thread no MCTS will do vs. humans, probably pretty well I think. The opening book is private, it's hard enough to give knight odds to GMs without giving them the book as well (I did give the book to David Smerdon, but it was much more primitive at that time). After all they don't send me their opening preparation!

Okay I try this engine Ceibo 0.7 rated 2598 by CCRL using standard Dragon2 (Not MCTS) At 10'+5" using one Thread on my laptop intel i7 3.40 GHz ( (Contemp =100)

[pgn][Event "Knight Odds"]
[Date "2021.09.09"]
[Round "?"]
[White "Dragon-2-64bit-avx2"]
[Black "Ceibo_0.7"]
[Result "0-1"]
[BlackElo "2598"]
[Time "08:20:18"]
[WhiteElo "3580"]
[TimeControl "600+5"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKB1R w KQkq - 0 1"]
[Termination "normal"]
[PlyCount "109"]
[WhiteType "program"]
[BlackType "program"]

1. d4 d5 2. c3 Nf6 3. e3 Nc6 4. Bb5 g6 5. O-O Bg7 6. Nd2 O-O 7. h3 a6 8.
Be2 e5 9. a4 a5 10. Qb3 e4 11. Rd1 b6 12. Nf1 Ne7 13. Ng3 h5 14. Rd2 h4 15.
Nf1 c5 16. Qa3 Qc7 17. Rd1 Rd8 18. b4 axb4 19. cxb4 c4 20. b5 Ne8 21. Bd2
Nd6 22. Rdb1 Be6 23. Nh2 f5 24. Qb2 Rf8 25. Bc3 Kh7 26. a5 bxa5 27. Bxa5
Qd7 28. Bb4 Rxa1 29. Rxa1 Rb8 30. Bxd6 Qxd6 31. Rb1 Bd7 32. b6 Bc6 33. Qa2
Nc8 34. Qa5 Qd8 35. Bd1 Nxb6 36. Qc5 Qc7 37. Qa5 Bf8 38. f4 Be7 39. Nf1 Kg7
40. Rb2 Bd8 41. Qa1 Ra8 42. Qc1 Be7 43. Qb1 Na4 44. Rc2 Ra6 45. Qa1 Nc5 46.
Ra2 Rxa2 47. Qxa2 Nd3 48. Qa1 g5 49. g3 Kg6 50. g4 gxf4 51. gxf5+ Kxf5 52.
Bg4+ Kg6 53. Qd1 fxe3 54. Bh5+ Kh6 55. Qe2 {White resigns} *[/pgn]

[Uri Blass]

I believe that I found Stockfish match when giving a Knight Odds, it is around 2150 to 2160 since this engine Knockout is rated 2153 by CCRL, another observation is that the latest Stockfish is not bad at giving Knight Odds it is doing very good holding Expert programs, just like Komodo Dragon2, remember I am only using a mere intel i7 3.40 GHz with 4 cores not the same system that you use when giving Knight odds to GM rated between 2550 to 2600. I know a friend from the Dom. Republic who is rated 2188 by FIDE he agreed to play vs Dragon2 at Knight Odds using Skype TC 30'+10", But I will need to get the Knight Odds opening for Dragon2, where I can download the Knight Odds Opening ?
https://ratings.fide.com/profile/6400442

[pgn][Event "Knight Odds"]
[Site "MININT-UB2PIMJ"]
[Date "2021.09.08"]
[Round "?"]
[White "Stockfish_14_x64_bmi2"]
[Black "Knockout"]
[Result "1/2-1/2"]
[BlackElo "2152"]
[Time "20:28:52"]
[WhiteElo "3580"]
[TimeControl "900+10"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKB1R w KQkq - 0 1"]
[Termination "normal"]
[PlyCount "229"]
[WhiteType "program"]
[BlackType "program"]

1. e4 Nc6 2. d4 d5 3. Bb5 dxe4 4. c4 Nf6 5. d5 a6 6. Ba4 b5 7. dxc6 bxa4 8.
Qxd8+ Kxd8 9. Nc3 Be6 10. b3 axb3 11. axb3 Rb8 12. Rxa6 Bc8 13. Ra2 Rxb3
14. Rd2+ Ke8 15. Nb5 Rd3 16. Nxc7+ Kd8 17. Nb5 e5 18. c7+ Kd7 19. Ke2 Bc5
20. Rhd1 Rxd2+ 21. Bxd2 Ke7 22. Be3 Bxe3 23. Kxe3 Ng4+ 24. Ke2 Nxh2 25. Rd5
Bg4+ 26. Kd2 f6 27. Na7 Ra8 28. Nc6+ Kf7 29. Kc3 e3 30. fxe3 Rc8 31. Rc5
Nf1 32. Na7 Ra8 33. c8=Q Bxc8 34. Nxc8 Nxe3 35. Rc7+ Kf8 36. g3 Ra3+ 37.
Kb2 Rd3 38. c5 Nc4+ 39. Kc2 Rxg3 40. Rb7 Rg4 41. Kd3 Na5 42. Rb5 Nc6 43.
Rb6 Nb4+ 44. Ke2 Nd5 45. c6 Rg2+ 46. Kd1 Kg8 47. Rb7 Rg3 48. Ne7+ Nxe7 49.
Rxe7 Kf8 50. c7 Rc3 51. Rd7 Kg8 52. Kd2 Rc6 53. Rd8+ Kf7 54. c8=Q Rxc8 55.
Rxc8 h5 56. Rc1 Ke6 57. Ke3 g5 58. Kf3 f5 59. Rc6+ Kf7 60. Rh6 h4 61. Ke3
Kg7 62. Re6 e4 63. Rc6 h3 64. Rc2 Kf6 65. Rh2 g4 66. Kf4 Kg6 67. Rb2 Kf6
68. Rh2 Kg6 69. Rb2 Kf6 70. Ra2 Kg7 71. Ra6 Kf7 72. Ra1 Kg6 73. Ra6+ Kf7
74. Rh6 Kg7 75. Rh5 Kg6 76. Rg5+ Kh6 77. Rg8 Kh7 78. Ra8 Kg7 79. Ra7+ Kf6
80. Ra1 Kg6 81. Rd1 Kf6 82. Rh1 Kg6 83. Re1 Kf6 84. Rf1 Ke6 85. Rc1 Kf6 86.
Rc5 Kg6 87. Rc1 Kf6 88. Rd1 Ke6 89. Ra1 Kf6 90. Re1 Ke6 91. Ra1 Kf6 92. Ra8
Kg7 93. Rb8 Kh7 94. Rb1 Kg6 95. Rb5 Kh6 96. Rb1 Kg6 97. Rb6+ Kg7 98. Rb5
Kh6 99. Rb6+ Kg7 100. Rd6 Kf7 101. Rh6 Kg7 102. Rh4 Kg6 103. Rh8 Kg7 104.
Rh5 Kg6 105. Rh8 Kg7 106. Rd8 Kf7 107. Rd6 Kg7 108. Rd8 Kf7 109. Rd1 Ke6
110. Re1 Kf6 111. Rf1 Ke6 112. Rd1 Kf6 113. Re1 Ke6 114. Rh1 Kf6 115. Rh2
{3-fold repetition} 1/2-1/2[/pgn]

I do not understand why do you use stockfish14 that has no comtempt option.

Older stockfish with contempt was stronger with odds.
See the following thread:
http://talkchess.com/forum3/viewtopic.php?f=6&t=77325

[Chessqueen]

I believe that I found Stockfish match when giving a Knight Odds, it is around 2150 to 2160 since this engine Knockout is rated 2153 by CCRL, another observation is that the latest Stockfish is not bad at giving Knight Odds it is doing very good holding Expert programs, just like Komodo Dragon2, remember I am only using a mere intel i7 3.40 GHz with 4 cores not the same system that you use when giving Knight odds to GM rated between 2550 to 2600. I know a friend from the Dom. Republic who is rated 2188 by FIDE he agreed to play vs Dragon2 at Knight Odds using Skype TC 30'+10", But I will need to get the Knight Odds opening for Dragon2, where I can download the Knight Odds Opening ?
https://ratings.fide.com/profile/6400442

[pgn][Event "Knight Odds"]
[Date "2021.09.08"]
[Round "?"]
[White "Stockfish_14_x64_bmi2"]
[Black "Knockout"]
[Result "1/2-1/2"]
[BlackElo "2152"]
[Time "20:28:52"]
[WhiteElo "3580"]
[TimeControl "900+10"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKB1R w KQkq - 0 1"]
[Termination "normal"]
[PlyCount "229"]
[WhiteType "program"]
[BlackType "program"]

1. e4 Nc6 2. d4 d5 3. Bb5 dxe4 4. c4 Nf6 5. d5 a6 6. Ba4 b5 7. dxc6 bxa4 8.
Qxd8+ Kxd8 9. Nc3 Be6 10. b3 axb3 11. axb3 Rb8 12. Rxa6 Bc8 13. Ra2 Rxb3
14. Rd2+ Ke8 15. Nb5 Rd3 16. Nxc7+ Kd8 17. Nb5 e5 18. c7+ Kd7 19. Ke2 Bc5
20. Rhd1 Rxd2+ 21. Bxd2 Ke7 22. Be3 Bxe3 23. Kxe3 Ng4+ 24. Ke2 Nxh2 25. Rd5
Bg4+ 26. Kd2 f6 27. Na7 Ra8 28. Nc6+ Kf7 29. Kc3 e3 30. fxe3 Rc8 31. Rc5
Nf1 32. Na7 Ra8 33. c8=Q Bxc8 34. Nxc8 Nxe3 35. Rc7+ Kf8 36. g3 Ra3+ 37.
Kb2 Rd3 38. c5 Nc4+ 39. Kc2 Rxg3 40. Rb7 Rg4 41. Kd3 Na5 42. Rb5 Nc6 43.
Rb6 Nb4+ 44. Ke2 Nd5 45. c6 Rg2+ 46. Kd1 Kg8 47. Rb7 Rg3 48. Ne7+ Nxe7 49.
Rxe7 Kf8 50. c7 Rc3 51. Rd7 Kg8 52. Kd2 Rc6 53. Rd8+ Kf7 54. c8=Q Rxc8 55.
Rxc8 h5 56. Rc1 Ke6 57. Ke3 g5 58. Kf3 f5 59. Rc6+ Kf7 60. Rh6 h4 61. Ke3
Kg7 62. Re6 e4 63. Rc6 h3 64. Rc2 Kf6 65. Rh2 g4 66. Kf4 Kg6 67. Rb2 Kf6
68. Rh2 Kg6 69. Rb2 Kf6 70. Ra2 Kg7 71. Ra6 Kf7 72. Ra1 Kg6 73. Ra6+ Kf7
74. Rh6 Kg7 75. Rh5 Kg6 76. Rg5+ Kh6 77. Rg8 Kh7 78. Ra8 Kg7 79. Ra7+ Kf6
80. Ra1 Kg6 81. Rd1 Kf6 82. Rh1 Kg6 83. Re1 Kf6 84. Rf1 Ke6 85. Rc1 Kf6 86.
Rc5 Kg6 87. Rc1 Kf6 88. Rd1 Ke6 89. Ra1 Kf6 90. Re1 Ke6 91. Ra1 Kf6 92. Ra8
Kg7 93. Rb8 Kh7 94. Rb1 Kg6 95. Rb5 Kh6 96. Rb1 Kg6 97. Rb6+ Kg7 98. Rb5
Kh6 99. Rb6+ Kg7 100. Rd6 Kf7 101. Rh6 Kg7 102. Rh4 Kg6 103. Rh8 Kg7 104.
Rh5 Kg6 105. Rh8 Kg7 106. Rd8 Kf7 107. Rd6 Kg7 108. Rd8 Kf7 109. Rd1 Ke6
110. Re1 Kf6 111. Rf1 Ke6 112. Rd1 Kf6 113. Re1 Ke6 114. Rh1 Kf6 115. Rh2
{3-fold repetition} 1/2-1/2[/pgn]

I do not understand why do you use stockfish14 that has no contempt option.

Older stockfish with contempt was stronger with odds.
See the following thread:
http://talkchess.com/forum3/viewtopic.php?f=6&t=77325

You are correct I wasted my time, since Stockfish does not have the contempt option, but Mr. Kaufman made a good point which at first did not made any sense to me which is using 1 thread instead of 4 or 8 thread versus other engines and NOT using MCTS (Contempt 100) Dragon2 giving Knight Odds or Rook odds play much stronger than using MCTS with Multi threads. My question is what happen to the extra cores? I thought that they help Dragon2 but it seems as if it get involved in too many unnecessary calculation that are not processed correctly with the MCTS. Here is another game where Dragons simply destroy this 2598 engines at Knight Odds. http://ccrl.chessdom.com/ccrl/404/cgi/e ... 0_7_64-bit My Dominican Friend just told me that he is not interested in playing Knight Odds versus such strong engine. I guess he did some research and saw some of the games of Dragon2 vs GM Smerdon

[pgn][Event "Knight Odds"]
[Date "2021.09.09"]
[Round "?"]
[White "Dragon-2-64bit-avx2"]
[Black "Ceibo_0.7"]
[Result "1-0"]
[BlackElo "2598"]
[Time "09:16:22"]
[WhiteElo "3570"]
[TimeControl "600+5"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/R1BQKBNR w KQkq - 0 1"]
[Termination "normal"]
[PlyCount "136"]
[WhiteType "program"]
[BlackType "program"]

1. d4 c5 2. e3 e6 3. Nf3 Nc6 4. a3 d5 5. b3 Nf6 6. Bd3 Bd7 7. O-O cxd4 8.
exd4 Bd6 9. c4 O-O 10. Re1 Rc8 11. c5 Bb8 12. b4 a6 13. Bb2 Nh5 14. Bc3 Nf4
15. Bc2 Ne7 16. g3 Nfg6 17. h4 Nf5 18. h5 Nge7 19. a4 Nh6 20. Qd3 Nef5 21.
Bd2 Ng4 22. Re2 Re8 23. Rae1 h6 24. Bc1 Nxf2 25. Rxf2 Bxg3 26. Ref1 Bxf2+
27. Rxf2 Qe7 28. Rg2 Kh7 29. Ne5 Rcd8 30. Bf4 Ra8 31. Qd2 Rac8 32. Ng4 f6
33. Bxh6 Rg8 34. Bf4 Qf7 35. Qd3 Kh8 36. Qh3 Rge8 37. Be5 fxe5 38. Nxe5 Qf6
39. Rg6 Qh4 40. Rh6+ Kg8 41. Rh8+ Kxh8 42. Ng6+ Kg8 43. Nxh4 Rcd8 44. Ng6
Nxd4 45. h6 Nxc2 46. h7+ Kf7 47. Qh5 Kf6 48. h8=Q Rxh8 49. Nxh8 Be8 50.
Qh4+ g5 51. Qf2+ Kg7 52. Qxc2 Kxh8 53. Qe2 Kg7 54. Qxe6 Bf7 55. Qe7 Re8 56.
Qxb7 d4 57. c6 Kf6 58. c7 Be6 59. Qxa6 Kf7 60. Qd6 Bf5 61. Qd5+ Be6 62.
Qxd4 Rc8 63. Qd6 Re8 64. b5 Bc8 65. Qd5+ Kg7 66. a5 Re1+ 67. Kf2 Re8 68. a6
Rf8+ {Black resigns} *[/pgn]

[lkaufman]

I believe that I found Stockfish match when giving a Knight Odds, it is around 2150 to 2160 since this engine Knockout is rated 2153 by CCRL, another observation is that the latest Stockfish is not bad at giving Knight Odds it is doing very good holding Expert programs, just like Komodo Dragon2, remember I am only using a mere intel i7 3.40 GHz with 4 cores not the same system that you use when giving Knight odds to GM rated between 2550 to 2600. I know a friend from the Dom. Republic who is rated 2188 by FIDE he agreed to play vs Dragon2 at Knight Odds using Skype TC 30'+10", But I will need to get the Knight Odds opening for Dragon2, where I can download the Knight Odds Opening ?
https://ratings.fide.com/profile/6400442

[pgn][Event "Knight Odds"]
[Date "2021.09.08"]
[Round "?"]
[White "Stockfish_14_x64_bmi2"]
[Black "Knockout"]
[Result "1/2-1/2"]
[BlackElo "2152"]
[Time "20:28:52"]
[WhiteElo "3580"]
[TimeControl "900+10"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKB1R w KQkq - 0 1"]
[Termination "normal"]
[PlyCount "229"]
[WhiteType "program"]
[BlackType "program"]

1. e4 Nc6 2. d4 d5 3. Bb5 dxe4 4. c4 Nf6 5. d5 a6 6. Ba4 b5 7. dxc6 bxa4 8.
Qxd8+ Kxd8 9. Nc3 Be6 10. b3 axb3 11. axb3 Rb8 12. Rxa6 Bc8 13. Ra2 Rxb3
14. Rd2+ Ke8 15. Nb5 Rd3 16. Nxc7+ Kd8 17. Nb5 e5 18. c7+ Kd7 19. Ke2 Bc5
20. Rhd1 Rxd2+ 21. Bxd2 Ke7 22. Be3 Bxe3 23. Kxe3 Ng4+ 24. Ke2 Nxh2 25. Rd5
Bg4+ 26. Kd2 f6 27. Na7 Ra8 28. Nc6+ Kf7 29. Kc3 e3 30. fxe3 Rc8 31. Rc5
Nf1 32. Na7 Ra8 33. c8=Q Bxc8 34. Nxc8 Nxe3 35. Rc7+ Kf8 36. g3 Ra3+ 37.
Kb2 Rd3 38. c5 Nc4+ 39. Kc2 Rxg3 40. Rb7 Rg4 41. Kd3 Na5 42. Rb5 Nc6 43.
Rb6 Nb4+ 44. Ke2 Nd5 45. c6 Rg2+ 46. Kd1 Kg8 47. Rb7 Rg3 48. Ne7+ Nxe7 49.
Rxe7 Kf8 50. c7 Rc3 51. Rd7 Kg8 52. Kd2 Rc6 53. Rd8+ Kf7 54. c8=Q Rxc8 55.
Rxc8 h5 56. Rc1 Ke6 57. Ke3 g5 58. Kf3 f5 59. Rc6+ Kf7 60. Rh6 h4 61. Ke3
Kg7 62. Re6 e4 63. Rc6 h3 64. Rc2 Kf6 65. Rh2 g4 66. Kf4 Kg6 67. Rb2 Kf6
68. Rh2 Kg6 69. Rb2 Kf6 70. Ra2 Kg7 71. Ra6 Kf7 72. Ra1 Kg6 73. Ra6+ Kf7
74. Rh6 Kg7 75. Rh5 Kg6 76. Rg5+ Kh6 77. Rg8 Kh7 78. Ra8 Kg7 79. Ra7+ Kf6
80. Ra1 Kg6 81. Rd1 Kf6 82. Rh1 Kg6 83. Re1 Kf6 84. Rf1 Ke6 85. Rc1 Kf6 86.
Rc5 Kg6 87. Rc1 Kf6 88. Rd1 Ke6 89. Ra1 Kf6 90. Re1 Ke6 91. Ra1 Kf6 92. Ra8
Kg7 93. Rb8 Kh7 94. Rb1 Kg6 95. Rb5 Kh6 96. Rb1 Kg6 97. Rb6+ Kg7 98. Rb5
Kh6 99. Rb6+ Kg7 100. Rd6 Kf7 101. Rh6 Kg7 102. Rh4 Kg6 103. Rh8 Kg7 104.
Rh5 Kg6 105. Rh8 Kg7 106. Rd8 Kf7 107. Rd6 Kg7 108. Rd8 Kf7 109. Rd1 Ke6
110. Re1 Kf6 111. Rf1 Ke6 112. Rd1 Kf6 113. Re1 Ke6 114. Rh1 Kf6 115. Rh2
{3-fold repetition} 1/2-1/2[/pgn]

I do not understand why do you use stockfish14 that has no contempt option.

Older stockfish with contempt was stronger with odds.
See the following thread:
http://talkchess.com/forum3/viewtopic.php?f=6&t=77325

You are correct I wasted my time, since Stockfish does not have the contempt option, but Mr. Kaufman made a good point which at first did not made any sense to me which is using 1 thread instead of 4 or 8 thread versus other engines and NOT using MCTS (Contempt 100) Dragon2 giving Knight Odds or Rook odds play much stronger than using MCTS with Multi threads. My question is what happen to the extra cores? I thought that they help Dragon2 but it seems as if it get involved in too many unnecessary calculation that are not processed correctly with the MCTS. Here is another game where Dragons simply destroy this 2598 engines at Knight Odds. http://ccrl.chessdom.com/ccrl/404/cgi/e ... 0_7_64-bit My Dominican Friend just told me that he is not interested in playing Knight Odds versus such strong engine. I guess he did some research and saw some of the games of Dragon2 vs GM Smerdon

[pgn][Event "Knight Odds"]
[Date "2021.09.09"]
[Round "?"]
[White "Dragon-2-64bit-avx2"]
[Black "Ceibo_0.7"]
[Result "1-0"]
[BlackElo "2598"]
[Time "09:16:22"]
[WhiteElo "3570"]
[TimeControl "600+5"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/R1BQKBNR w KQkq - 0 1"]
[Termination "normal"]
[PlyCount "136"]
[WhiteType "program"]
[BlackType "program"]

1. d4 c5 2. e3 e6 3. Nf3 Nc6 4. a3 d5 5. b3 Nf6 6. Bd3 Bd7 7. O-O cxd4 8.
exd4 Bd6 9. c4 O-O 10. Re1 Rc8 11. c5 Bb8 12. b4 a6 13. Bb2 Nh5 14. Bc3 Nf4
15. Bc2 Ne7 16. g3 Nfg6 17. h4 Nf5 18. h5 Nge7 19. a4 Nh6 20. Qd3 Nef5 21.
Bd2 Ng4 22. Re2 Re8 23. Rae1 h6 24. Bc1 Nxf2 25. Rxf2 Bxg3 26. Ref1 Bxf2+
27. Rxf2 Qe7 28. Rg2 Kh7 29. Ne5 Rcd8 30. Bf4 Ra8 31. Qd2 Rac8 32. Ng4 f6
33. Bxh6 Rg8 34. Bf4 Qf7 35. Qd3 Kh8 36. Qh3 Rge8 37. Be5 fxe5 38. Nxe5 Qf6
39. Rg6 Qh4 40. Rh6+ Kg8 41. Rh8+ Kxh8 42. Ng6+ Kg8 43. Nxh4 Rcd8 44. Ng6
Nxd4 45. h6 Nxc2 46. h7+ Kf7 47. Qh5 Kf6 48. h8=Q Rxh8 49. Nxh8 Be8 50.
Qh4+ g5 51. Qf2+ Kg7 52. Qxc2 Kxh8 53. Qe2 Kg7 54. Qxe6 Bf7 55. Qe7 Re8 56.
Qxb7 d4 57. c6 Kf6 58. c7 Be6 59. Qxa6 Kf7 60. Qd6 Bf5 61. Qd5+ Be6 62.
Qxd4 Rc8 63. Qd6 Re8 64. b5 Bc8 65. Qd5+ Kg7 66. a5 Re1+ 67. Kf2 Re8 68. a6
Rf8+ {Black resigns} *[/pgn]

That is a very nice game! So it looks like my 2600 CCRL estimate for Dragon 2 giving knight odds at 15' + 10" was at least in the ballpark. I think that the reason one thread is enough is that once you outsearch your opponent by something like ten plies, searching even deeper will just lead you to avoid things that the opponent would be unlikely to find in any case. Large handicaps test the strength of the odds-receiver, not the strength of the odds-giver. Knight odds seems to be near the dividing line between "large" and "small" handicaps in this sense. By the way, GM Smerdon never played Dragon, it didn't exist in May 2020; perhaps you meant GM Wirig.

[Chessqueen]

[quote=JohnW post_id=904772 time=1631128038 user_id=6645]
I don't know what Sargon from 1978 was rated at it but Komodo was able to beat it without a Queen.
Sorry I couldn't get the pgn to work correctly. All you have to do is place this bracket with pgn on beginning of the first line. Therefore, Sargon 1978 must be less than 1600 to lose to Dragon Queen Odds, it is strange that Sargon walked inside of Dragon territory Naked. Not even a 1100 rated human would do that. After the check with f5 to Black King it should have never walked into enemy territory without its army nearby to protect him, it should have retreated back into safety close to his army or soldiers, for example to Kg7 then Kf8, then Ke8 followed by Bishop to Bf8 looking for his army protection


[pgn][Event "banksia game"]
[Site "?"]
[Date "2021.09.08"]
[Round "?"]
[White "Dragon by Komodo Chess 2 64-bit"]
[Black "Sargon 1978 V1.00"]
[Result "1-0"]
[Time "15:05:23"]
[TimeControl "120+0"]
[SetUp "1"]
[FEN "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNB1KBNR w KQkq - 0 512"]
[Termination "normal"]
[PlyCount "63"]
[WhiteType "human"]
[BlackType "human"]

512. d3 {-9.41/24 19979 87920990} Nc6 {-9.75/7 30073 921556} 513. e3
{-9.54/25 25277 110225032} e5 514. a3 {-9.58/24 11398 51331988} Nf6
{-9.75/6 29047 346161} 515. Ne2 {-9.73/26 37488 159682228} d5 {-9.75/7
44625 2050094} 516. h3 {-9.93/27 52675 223636250} Be7 {-9.75/6 49829
446673} 517. Ng3 {-9.93/25 41292 173579978} Be6 {-9.25/6 9400 420891} 518.
Nd2 {-10.09/25 29196 127847007} O-O {-9.75/6 13892 623129} 519. Be2
{-10.37/24 22246 95750428} d4 {-9.75/6 11152 497168} 520. e4 {-9.68/25
15587 70134709} a5 {-9.75/6 10769 478207} 521. O-O {-9.65/24 10560
50361337} Bc5 {-9.75/6 16819 739991} 522. Nf3 {-9.21/24 17520 79848717} a4
{-9.75/6 14646 640854} 523. Ng5 {-9.26/24 9640 45645675} Qd7 {-9.75/6 14278
627400} 524. Nf3 {-9.42/24 39692 183030430} Rfd8 {-9.75/6 20614 903930}
525. Bg5 {-9.27/23 16860 76062247} h6 {-9.25/6 15632 679849} 526. Bxf6
{-9.25/23 10036 47973563} gxf6 {-9.25/6 10223 448332} 527. Nh2 {-9.63/26
83067 392553978} Kg7 {-9.75/6 8287 363040} 528. Bg4 {-9.32/23 19298
97286869} Bxg4 {-9.25/6 16514 712441} 529. Nxg4 {-8.73/23 10214 49802190}
Kg6 {-9.25/6 6478 289204} 530. f4 {-9.11/24 19023 93141000} Be7 {-9.75/6
11702 514824} 531. f5+ {-9.59/25 56341 286265850} Kg5 {-10.25/7 11733
521832} 532. Nf2 {-9.71/25 22112 114436191} Qd6 {-9.75/6 34738 316478} 533.
h4+ {-8.16/26 25005 147101153} Kxh4 {-10.75/8 17895 796677} 534. Ngh1
{-7.06/25 7921 56930587} Qc5 {-10.50/7 31356 595182} 535. g3+ {-6.83/24
7944 55503507} Kg5 {-10.00/7 6671 300072} 536. Nh3+ {+5.48/27 63554
423707956} Kg4 {-10.75/7 7349 329085} 537. Kg2 {M+10/20 1901 16167537}
Qxc2+ {-11.75/7 26436 1193532} 538. N1f2+ {M+9/24 2129 13377045} Kh5
{-5.75/7 7361 320246} 539. Rh1 {M+6/38 1501 6280046} Qxf2+ {-5.75/5 26450
203138} 540. Kxf2 {M+4/99 110 376986} Kg4 {M-3/6 21891 1003058} 541. Ng1
{M+3/99 17 22238} h5 {M-2/6 5613 256337} 542. Nf3 {M+2/99 14 5525} Bc5
{M-3/6 7712 348959} 543. Rh4# {M+1/99 13 3264} 1-0[/pgn]

[Chessqueen]

Not even a 1100 rated human would do that. After the check with f5 to Black King it should have never walked into enemy territory without its army nearby to protect him, it should have retreated back into safety close to his army or soldiers, for example to Kg7 then Kf8, then Ke8 followed by Queen to d6 looking for his army protection. This is how the game should have continue after my suggestion of retreating the Black King into safety surrounded by his army.

[pgn][Event "Queen odds"]
[Site "MININT-UB2PIMJ"]
[Date "2021.09.09"]
[Round "?"]
[White "Dragon-2-64bit-avx2"]
[Black "ChessQueen"]
[Result "*"]
[BlackElo "2000"]
[Time "11:56:02"]
[WhiteElo "3470"]
[TimeControl "75+1"]
[SetUp "1"]
[FEN "r2r4/1ppqbp2/2n2pkp/4pP2/p2pP1N1/P2P2NP/1PP3P1/R4RK1 b - - 0 512"]
[Termination "adjudication"]
[PlyCount "18"]
[WhiteType "program"]
[BlackType "human"]


512. ...+ Kg7 513. Nh5+ Kf8 514. Nxh6 Ke8 515. Rf3 Qd6 516. Rf2[/pgn]