Dragon by Komodo Chess

Discussion of anything and everything relating to chess playing software and machines.

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Uri Blass
Posts: 10267
Joined: Thu Mar 09, 2006 12:37 am
Location: Tel-Aviv Israel

Re: Dragon by Komodo Chess

Post by Uri Blass »

lkaufman wrote: Mon Nov 16, 2020 8:11 am
JJJ wrote: Mon Nov 16, 2020 1:18 am
lkaufman wrote: Sun Nov 15, 2020 9:55 pm
JJJ wrote: Sun Nov 15, 2020 7:37 pm I would like to see penguin against Komodo at Bullet. It would be great !
What would you think would be a fair match? Knight odds at 1' + 1" perhaps?
I think it would be nice. I think So already player at Knight handicap against Stockfish some years ago at 1 min and lost badly :

Of course no human has much chance against Dragon with knight odds at one minute without increment, the one second inc makes all the difference. Also I note that in the three games of SF vs So, Wesley never played the obviously correct reply 1...d5! to 1e4 when the b1 knight is missing, he probably didn't even look at knight odds before the games. In fact 1.e4 is just a bad move for White unless Black is forbidden to reply 1...d5. That's a big problem with knight odds. I suspect that many of Morphy's opponents either played with the restriction of answering 1e4 with 1...e5 or else did so on grounds of sportsmanship. We would either have to alternate knights and just avoid 1e4 when b1 is off, or add the 1e4 e5 restriction.
Or maybe they did not know that 1...d5 is the best reply against 1.e4 with knight odds.

I do not see why do you think that it should be obvious that 1...d5 is the correct reply when knight b1 is missing.
BrendanJNorman
Posts: 2526
Joined: Mon Feb 08, 2016 12:43 am
Full name: Brendan J Norman

Re: Dragon by Komodo Chess

Post by BrendanJNorman »

Uri Blass wrote: Mon Nov 16, 2020 8:49 am
lkaufman wrote: Mon Nov 16, 2020 8:11 am
JJJ wrote: Mon Nov 16, 2020 1:18 am
lkaufman wrote: Sun Nov 15, 2020 9:55 pm
JJJ wrote: Sun Nov 15, 2020 7:37 pm I would like to see penguin against Komodo at Bullet. It would be great !
What would you think would be a fair match? Knight odds at 1' + 1" perhaps?
I think it would be nice. I think So already player at Knight handicap against Stockfish some years ago at 1 min and lost badly :

Of course no human has much chance against Dragon with knight odds at one minute without increment, the one second inc makes all the difference. Also I note that in the three games of SF vs So, Wesley never played the obviously correct reply 1...d5! to 1e4 when the b1 knight is missing, he probably didn't even look at knight odds before the games. In fact 1.e4 is just a bad move for White unless Black is forbidden to reply 1...d5. That's a big problem with knight odds. I suspect that many of Morphy's opponents either played with the restriction of answering 1e4 with 1...e5 or else did so on grounds of sportsmanship. We would either have to alternate knights and just avoid 1e4 when b1 is off, or add the 1e4 e5 restriction.
Or maybe they did not know that 1...d5 is the best reply against 1.e4 with knight odds.

I do not see why do you think that it should be obvious that 1...d5 is the correct reply when knight b1 is missing.
Pretty self-evident isn't it?

The only drawback of the Scandinavian (to counterweight the overwhelming strength of a centralized queen) is that the queen can immediately be attacked with 3.Nb1-c3, costing black time and kicking the queen out of her nice post.

Without a knight on b1... :shock:

Another point in addition to this is that black having a more open game (Scandi is very good for this) allows him to trade pieces more readily, bringing the knight up ending closer and closer.
Madeleine Birchfield
Posts: 512
Joined: Tue Sep 29, 2020 4:29 pm
Location: Dublin, Ireland
Full name: Madeleine Birchfield

Re: Dragon by Komodo Chess

Post by Madeleine Birchfield »

BrendanJNorman wrote: Mon Nov 16, 2020 9:02 am Another point in addition to this is that black having a more open game (Scandi is very good for this) allows him to trade pieces more readily, bringing the knight up ending closer and closer.
Couldn't white avoid all that by pushing his pawn to e5 on move 2, yielding a French Defence/Advanced Caro-Kann type positions?
JJJ
Posts: 1346
Joined: Sat Apr 19, 2014 1:47 pm

Re: Dragon by Komodo Chess

Post by JJJ »

lkaufman wrote: Mon Nov 16, 2020 8:11 am
JJJ wrote: Mon Nov 16, 2020 1:18 am
lkaufman wrote: Sun Nov 15, 2020 9:55 pm
JJJ wrote: Sun Nov 15, 2020 7:37 pm I would like to see penguin against Komodo at Bullet. It would be great !
What would you think would be a fair match? Knight odds at 1' + 1" perhaps?
I think it would be nice. I think So already player at Knight handicap against Stockfish some years ago at 1 min and lost badly :

Of course no human has much chance against Dragon with knight odds at one minute without increment, the one second inc makes all the difference. Also I note that in the three games of SF vs So, Wesley never played the obviously correct reply 1...d5! to 1e4 when the b1 knight is missing, he probably didn't even look at knight odds before the games. In fact 1.e4 is just a bad move for White unless Black is forbidden to reply 1...d5. That's a big problem with knight odds. I suspect that many of Morphy's opponents either played with the restriction of answering 1e4 with 1...e5 or else did so on grounds of sportsmanship. We would either have to alternate knights and just avoid 1e4 when b1 is off, or add the 1e4 e5 restriction.
Maybe you want to test Dragon Komodo before to have an idea how strong it ll play at bullet. In anycase, Penguin would love to challenge it. Also, you might consider many others handicap, even a 3 pawn handicap at bullet or maybe blitz to see how it does. Hikaru plays himself many handicap game against lower opponent, this time it would be the opposite.
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AdminX
Posts: 6339
Joined: Mon Mar 13, 2006 2:34 pm
Location: Acworth, GA

Re: Dragon by Komodo Chess

Post by AdminX »

Only played 3 long-time control games so far, but I can see that this version of dragon is tenacious.

[pgn]
[Event "banksia game"]
[Date "2020.11.16"]
[White "Leela Cudnn 2070S"]
[Black "Remote KDragon"]
[Result "1/2-1/2"]
[TimeControl "40/7200+8"]
[Time "04:43:47"]
[Termination "repetition"]
[ECO "E04"]
[Opening "Catalan"]

1. d4 {+0.11/11 132.3 1038741 369/345/286} Nf6 {+2684354.55/1 0.1 24136} 2. c4 {+0.12/12 105.2 1192650 368/351/281} e6 {+2684354.55/1 0.1 33739}
3. Nf3 {+0.12/13 248.4 2493938 362/364/274} d5 {+2684354.55/1 0.1 2188} 4. g3 {+0.12/14 61.2 1479363 360/369/271} dxc4 {+2684354.55/1 0.1 29140}
5. Bg2 {+0.14/17 169.6 1183808 372/360/268; E04: Catalan, open, 5.Nf3} Nc6 {+2684354.55/1 0.1 104562} 6. Qa4 {+0.20/24 172.8 1206476 359/424/217} Bb4+ {+2684354.55/1 0.1 23673}
7. Bd2 {+0.19/26 80.8 1508251 347/443/210} Nd5 {+2684354.55/1 0.1 23075} 8. Bxb4 {+0.19/26 100.0 2059871 336/462/202} Ndxb4 {+2684354.55/1 0.1 55648}
9. O-O {+0.18/25 121.1 2898960 328/476/196} Rb8 {+2684354.55/1 0.1 29325} 10. Na3 {+0.18/25 79.1 3255280 321/487/192} a6 {+2684354.55/1 0.1 22371}
11. Ne5 {+0.17/23 82.3 3464048 313/499/188} O-O {+2684354.55/1 0.1 37187} 12. Bxc6 {+0.16/22 774.6 8130145 305/507/188} Nxc6 {+2684354.55/1 0.1 43803}
13. Nxc6 {+0.16/20 0.4 4220498 304/510/186} bxc6 {+2684354.55/1 0.1 15471} 14. Nxc4 {+0.16/15 0.4 4159572 303/513/184} Qxd4 {+2684354.55/1 0.1 23060}
15. Rfd1 {+0.15/19 271.8 5592954 293/526/181} Qe4 {+2684354.55/1 0.1 25621} 16. Rd2 {+0.15/22 0.5 2772684 290/531/179} Rb5 {+2684354.55/1 0.1 40287}
17. Rc1 {+0.15/18 605.4 6053681 294/520/186} e5 {+2684354.55/1 0.1 36170} 18. b3 {+0.15/17 1.1 1987793 300/508/192} Qg4 {+2684354.55/1 0.1 19965}
19. Nb2 {+0.12/16 259.1 2861026 289/514/197} Qg5 {-0.25/33 264.0 1403262908} 20. Rcd1 {+0.10/20 385.0 5004408 267/542/191} h5
21. Qc4 {+0.10/18 0.2 2244884 263/551/186} Qf6 {-0.19/36 286.5 1586789135} 22. h4 {+0.08/17 239.2 4618759 246/571/183} Re8 {+0.00/36 332.3 1847979248}
23. Qc3 {+0.08/15 0.4 3375342 237/583/180} Bf5 {+0.00/44 408.8 2301998613} 24. Nc4 {+0.09/14 226.9 1851414 233/598/169} Be4 {+0.00/45 42.1 1332607225}
25. Ne3 {+0.08/15 216.8 1560318 208/647/145} Qe6 {+0.00/47 112.2 1857882570} 26. Qc4 {+0.08/15 119.4 2820551 189/682/129} Qxc4 {+0.00/49 309.5 1703518643}
27. Nxc4 {+0.08/16 0.3 3930252 181/696/123} a5 {+0.00/49 317.3 1210698166} 28. Nb2 {+0.08/12 299.3 2587360 191/677/132} Bd5 {+0.00/49 450.1 2524498167}
29. Na4 {+0.07/13 247.1 5585684 175/701/124} Rb4 {+0.00/50 67.0 1701709701} 30. Kf1 {+0.06/15 500.8 5475370 171/702/127} f6 {+0.00/47 520.4 2311907175}
31. Rc2 {+0.06/15 149.5 1359551 155/738/107} Reb8 {+0.00/51 350.4 2432538792} 32. f3 {+0.08/12 255.1 1844833 187/685/128} e4 {+0.00/49 397.1 1394321834}
33. f4 {+0.06/16 0.3 2940576 176/691/133} Kf7 {+0.00/43 392.4 1297291303} 34. Kf2 {+0.05/18 0.3 4069659 171/698/131} g5 {+0.00/44 423.2 944612500}
35. hxg5 {+0.04/15 0.4 5315177 161/710/129} fxg5 {+0.00/45 368.0 997968881} 36. e3 {+0.04/22 0.3 7135133 160/714/126} Rg8 {+0.00/45 320.0 525511346}
37. Rh1 {+0.07/14 572.4 4218928 160/734/106} h4 {+0.00/44 452.5 1160006161} 38. f5 {+0.16/10 256.7 3998879 237/640/123} Rh8 {+0.00/52 563.1 1627051362}
39. Rh2 {+0.17/11 437.5 8413404 248/624/128} Rb5 {+0.00/51 253.6 927384698} 40. Kg2 {+0.17/11 253.6 4176374 241/640/119} Kf6 {+0.00/48 279.8 1258827227}
41. g4 {+0.17/11 234.8 5641809 239/643/118} Rb7 42. Kh3 {+0.19/10 718.8 15377788 246/645/109} Rd8 {+0.00/50 324.2 1031522955}
43. Nc5 {+0.17/10 609.3 26501144 227/670/103} Rb5 {+0.00/52 272.0 1496799215} 44. Rc1 {+0.16/10 517.3 23599044 215/686/99} Kf7 {+0.00/52 267.7 943007727}
45. Rd2 {+0.16/9 403.5 10162603 216/684/100} Re8 {+0.00/52 57.5 1212576250} 46. Rd4 {+0.19/11 538.2 8283986 236/662/102} Rbb8
47. Na6 {+0.20/11 418.9 5958675 252/642/106} Rb7 {+0.00/54 288.6 856864510} 48. Rc2 {+0.19/12 385.1 11372551 240/657/103} Ra8 {+0.00/51 229.2 647459172}
49. Nc5 {+0.18/13 0.5 3902157 232/669/99} Rb4 {+0.00/51 235.4 685551037} 50. Rd1 {+0.18/11 355.6 14980391 225/678/97} Re8 {+0.00/53 36.9 951635163}
51. Na6 {+0.20/10 502.6 8750219 244/653/103} Rb7 52. Nc5 {+0.20/11 356.8 8961567 233/675/92} Rbb8
53. Rd4 {+0.21/10 370.0 5787584 244/661/95} Rb5 {+0.00/55 468.4 1191413213} 54. Rc1 {+0.20/11 197.2 5727697 232/676/92} Rb6
55. Rc2 {+0.20/10 248.6 4061678 237/671/92} Rb5 {+0.00/56 548.5 1060700036} 56. Rc3 {+0.18/12 144.1 10534861 229/674/97} Re7 {+0.00/54 204.4 1133907877}
57. Rc1 {+0.20/9 173.8 3396446 230/683/87} Rb6 {+0.00/52 159.3 592917054} 58. Rd2 {+0.21/9 205.6 4340461 232/686/82} Re8 {+0.00/52 168.3 631642173}
59. Na4 {+0.19/8 147.4 3645035 228/683/89} Rb5 {+0.00/53 204.0 1019429595} 60. Nc5 {+0.17/9 106.2 7162710 213/697/90} Rbb8 {+0.00/52 114.8 1285209447}
61. Na6 {+0.21/8 99.8 1860467 243/663/94} Rb7 {+0.00/54 102.3 922561116} 62. Rd4 {+0.18/10 115.5 4439580 230/672/98} Ra8 {+0.00/48 214.9 402285202}
63. Nc5 {+0.18/11 24.3 968876 222/688/90} Rb4 {+0.00/55 430.7 1935243745} 64. Rd2 {+0.16/10 5.4 9555778 210/698/92} Re8 {+0.00/53 172.7 827497503}
65. Na6 {+0.19/8 154.1 3001360 228/683/89} Rb7 {+0.00/54 125.8 1242126444} 66. Rd4 {+0.18/10 84.3 4642291 223/687/90} Ra8 {+0.00/50 205.5 283629600}
67. Nc5 {+0.17/12 0.3 1687326 209/706/85} Rb4 {+0.00/51 147.3 784392374} 68. Rd2 {+0.16/10 64.3 5785336 201/715/84} Rf8 {+0.00/44 170.0 662563121}
69. Na6 {+0.18/8 90.4 1746751 217/695/88} Rb7 {+0.00/52 229.6 725588451} 70. Nc5 {+0.17/11 31.3 4783577 203/715/82} Rb5 {+0.00/55 304.2 1102445547}
71. Na6 {+0.16/12 19.0 4372903 207/705/88} Rc8 {+0.00/55 179.5 380820876} 72. Rd4 {+0.16/11 0.3 3457959 202/714/84} Rb6 {+0.00/58 246.4 1018332534}
73. Nc5 {+0.16/11 26.9 833959 196/726/78} Re8 {+0.00/53 133.9 677812416} 74. Na4 {+0.17/9 79.9 1637660 203/719/78} Rb4 {+0.00/51 158.0 798321392}
75. Rd2 {+0.14/9 0.2 3288208 175/752/73} Rb5 {+0.00/50 167.7 842158971} 76. Nc5 {+0.14/8 56.2 2174809 171/762/67} Re7 {+0.00/51 167.0 981529363}
77. Rd4 {+0.17/8 25.2 552170 187/746/67} Rb8 {+0.00/51 297.9 1059770615} 78. Na4 {+0.17/8 33.3 766201 192/738/70} Rb5 {+0.00/53 257.1 458907897}
79. Rc5 {+0.18/8 18.4 414697 196/736/68} Re5 {+0.00/49 166.6 479257983} 80. Kh2 {+0.15/10 14.3 3413324 166/774/60} Kg7 {+0.00/47 162.0 744917585}
81. Rc2 {+0.13/11 573.8 8024735 156/786/58} Re8 {+0.00/51 348.4 1959359482} 82. Kh3 {+0.12/10 885.8 11695513 144/804/52} Rb4
83. Rd1 {+0.11/11 695.9 10592843 130/824/46} Rb5 84. Rd4 {+0.11/11 547.1 12783423 120/838/42} Rb4 {+0.00/51 293.8 1584526785}
85. Rd1 {+0.10/12 407.3 12555105 120/832/48} Rb5 86. Kh2 {+0.08/11 610.1 14876939 123/816/61} Re7 {+0.00/49 214.7 945006026}
87. Rd4 {+0.06/8 396.7 7639325 100/843/57} Kf7 {+0.00/51 231.9 741505680} 88. Nc5 {+0.02/8 350.3 10893893 54/912/34} Re8 {+0.00/56 220.9 442866078}
89. Kh3 {+0.01/6 272.6 17366695 54/903/43} Rb6 {+0.00/58 45.6 414133575} 90. Rc1 {+0.00/5 336.1 14657010 37/931/32} Re7 {+0.00/62 352.0 503291340}
91. a3 {+0.05/15 105.6 2012418 169/700/131} Re8 {+0.00/45 215.3 217266558} 92. b4 {+0.05/19 35.0 3261401 164/710/126} axb4 {+0.00/47 205.4 199764670}
93. axb4 {+0.05/19 0.8 5074073 164/710/126} Reb8 {+0.00/51 261.1 193568503} 94. Nd7 {+0.05/19 0.8 7041793 170/697/133} Rxb4 {+0.00/50 161.5 358889605}
95. Nxb8 {+0.05/16 0.8 8309607 166/705/129} Rxb8 {+0.00/50 161.6 151630186} 96. Rd2 {+0.05/14 34.0 10660695 164/711/125} Rb3 {+0.00/55 218.2 473379717}
97. Re2 {+0.05/14 343.1 15838357 163/712/125} Kf6 {+0.00/52 183.5 279999891} 98. Kg2 {+0.05/12 781.0 13728051 161/720/119} Ke5 {+0.00/51 208.2 333509978}
99. Ree1 {+0.05/14 4.3 4675660 160/720/120} Rb2+ {+0.00/46 154.0 368858815} 100. Kg1 {+0.06/13 126.3 2191797 150/748/102} Rd2 {+0.00/47 58.0 611443928}
101. Rf1 {+0.05/13 65.0 2970871 138/767/95} Kf6 {+0.00/52 245.8 688960138} 102. Rc5 {+0.05/13 72.1 6151136 129/781/90} Rd3 {+0.00/46 152.3 396609647}
103. Re1 {+0.04/8 30.7 4439428 130/775/95} Rd2 {+0.00/53 160.1 696791001} 104. Rcc1 {+0.04/11 107.7 7223339 126/779/95} Rd3 {+0.00/50 177.9 727781875}
105. Kf2 {+0.09/12 85.3 1353745 180/710/110} Ke5 {+0.00/48 156.6 456809746} 106. Rf1 {+0.11/12 56.6 1253735 181/716/103} Kf6 {+0.00/52 130.7 625406104}
107. Ke2 {+0.09/12 123.3 2143916 168/733/99} Rb3 {+0.00/52 167.1 727328464} 108. Rfd1 {+0.10/10 24.6 681353 177/724/99} Rb2+ {+0.00/53 188.1 777995899}
109. Rd2 {+0.11/10 24.7 632383 170/739/91} Rb5 {+0.00/56 141.5 759966441} 110. Kf2 {+0.09/10 54.6 3002147 163/742/95} Ke5 {+0.00/53 189.1 863488532}
111. Rdc2 {+0.09/12 0.3 3310852 159/749/92} Kd6 {+0.00/50 274.6 632797829} 112. Kg2 {+0.10/10 73.4 1794792 166/743/91} Ke5 {+0.00/49 242.3 805838963}
113. Kg1 {+0.09/10 15.7 3483200 157/754/89} Rb3 {+0.00/54 248.4 1142429514} 114. Rc3 {+0.08/11 0.3 3564843 148/767/85} Rb2 {+0.00/59 199.2 745857483}
115. Rf1 {+0.08/11 28.4 4463974 141/778/81} Kf6 {+0.00/56 211.6 943390379} 116. Re1 {+0.07/11 86.9 6844025 145/764/91} Rb5 {+0.00/55 174.3 663532414}
117. Rd1 {+0.09/12 62.6 1303888 150/767/83} Ke5 {+0.00/56 251.6 882322221} 118. Rd2 {+0.09/10 27.2 1194456 151/764/85} Kf6 {+0.00/54 270.9 938665900}
119. Ra3 {+0.10/8 45.7 1025775 146/780/74} Rb1+ {+0.00/50 252.4 1035229860} 120. Kg2 {+0.06/13 0.3 4429542 120/805/75} Re1 {+0.00/53 175.7 651326845}
121. Rc3 {+0.05/11 0.2 4262135 120/800/80} Rb1 {+0.00/60 574.0 1622835476} 122. Re2 {+0.06/10 520.9 10065305 128/790/82} Rd1 {+0.00/52 349.5 1497201570}
123. Rc5 {+0.06/11 200.7 9232330 124/798/78} Rd3 124. Kf2 {+0.06/11 631.0 10193451 132/782/86} Ke7
125. Ra5 {+0.07/13 406.5 4768971 151/751/98} Kd6 126. Kg2 {+0.10/17 349.7 3255044 168/736/96} Bf7 {+0.00/43 277.9 1268402998}
127. Kh2 {+0.11/17 600.7 5513330 197/687/116} c5 {+0.00/47 210.2 613258079} 128. f6 {+0.09/19 1.3 4198261 185/699/116} Rb3 {+0.00/46 249.8 396864355}
129. Ra6+ {+0.12/14 592.5 7248700 188/713/99} Kd5 {+0.00/47 210.1 571075449} 130. Ra5 {+0.12/15 432.1 10398524 178/730/92} Kd6 {+0.00/49 172.2 294025818}
131. Ra6+ {+0.12/15 192.6 6679782 184/718/98} Kd5 {+0.00/45 166.5 498559679} 132. Ra8 {+0.11/16 343.7 8271438 185/712/103} Rd3 {+0.00/47 251.2 881211896}
133. Ra5 {+0.10/18 0.6 4558037 181/713/106} Kd6 {+0.00/48 237.6 367051933} 134. Kg2 {+0.07/18 491.2 9359125 161/728/111} Rb3 {+0.00/46 222.9 455300939}
135. Ra6+ {+0.14/14 106.4 1349163 205/693/102} Kd5 {+0.00/45 191.2 396191683} 136. Ra5 {+0.11/14 251.5 5480708 167/744/89} Kd6 {+0.00/50 234.1 333604347}
137. Ra6+ {+0.11/14 19.2 3798017 176/728/96} Kd5 {+0.00/47 203.5 479623596} 138. Ra8 {+0.10/16 317.7 7303345 170/730/100} c4 {+0.00/41 151.4 317336020}
139. Ra5+ {+0.15/21 63.1 1089342 229/652/119} c5 {+0.00/44 326.3 698629823} 140. Rf2 {+0.07/24 196.4 7942826 159/733/108} Rxe3
141. Ra7 {+0.06/22 0.3 3804700 157/735/108} Be6 {+0.00/44 139.6 299000030} 142. f7 {+0.05/24 0.3 4526275 140/762/98} Bxf7 {+0.00/46 173.8 524806699}
143. Rfxf7 {+0.05/18 0.5 5408416 131/778/91} Rg3+ {+0.00/48 134.4 332700702} 144. Kh2 {+0.05/18 0.8 5703581 124/788/88} Kd4 {+0.00/55 167.8 708846308}
145. Rfd7+ {+0.03/18 439.8 10884766 114/798/88} Ke3 {+0.00/57 239.0 1141947833} 146. Ra4 {+0.36/26 86.0 1123414 327/592/81} c3 {+0.00/49 170.6 214222362}
147. Rc4 {+0.41/22 86.8 1068599 305/665/30} Kf2 {+0.00/50 45.8 139093479} 148. Rf7+ {+0.39/23 17.8 1893510 292/680/28} Ke2 {+0.00/59 150.0 1085281156}
149. Rf5 {+0.33/22 50.5 4523617 255/720/25} Rxg4 {+0.00/61 169.5 1266378436} 150. Rxc3 {+0.25/16 0.3 6406520 194/787/19} e3 {+0.00/61 143.0 1142238957}
151. Rcxc5 {+0.31/21 0.4 4063020 242/733/25} Rg3 {+0.00/64 158.5 1335133180} 152. Rc2+ {+0.28/20 0.3 6672392 216/765/19} Kd3 {+0.00/65 178.1 1500267763}
153. Rb2 {+0.22/20 433.8 18641751 198/763/39} g4 {+0.00/65 179.0 1556960533} 154. Ra5 {+0.20/18 0.2 14517796 182/781/37} Rh3+ {+0.00/66 200.5 1751772380}
155. Kg1 {+0.12/23 246.3 7264794 125/837/38} Rg3+ {+0.00/68 242.5 2077854289} 156. Kf1 {+0.10/19 62.4 8943660 120/837/43} Rf3+ {+0.00/68 237.2 2065702563}
157. Ke1 {+0.09/5 0.3 7134999 121/823/56} Rg3 {+0.00/64 151.6 1316213873} 158. Ra3+ {+0.08/17 0.3 9055071 123/813/64} Ke4 {+0.00/65 181.8 1573043157}
159. Rb8 {+0.07/21 156.3 13497644 110/834/56} Rg1+ {+0.00/65 185.8 1623524978} 160. Ke2 {+0.06/1 0.1 9587127 113/818/69} Rg2+ {+0.00/69 438.7 3633313748}
161. Kf1 {+0.05/6 0.3 16349108 122/795/83} Rf2+ {+0.00/64 12.5 115807049} 162. Kg1 {+0.05/18 0.3 16002075 117/803/80} Re2 {+0.00/72 262.8 2241414266}
163. Ra1 {+0.03/13 1111.2 37882176 80/867/53} h3 {+0.00/68 283.7 2570415170} 164. Re8+ {+0.03/12 119.9 9086159 69/885/46} Kf3 {+0.00/74 565.3 6339049995}
165. Rf1+ {+0.01/11 494.6 36273315 64/883/53} Kg3 {+0.00/91 569.1 5185723274} 166. Re4 {+0.00/8 444.9 61227629 44/920/36} Rg2+ {+0.00/80 271.0 2328774812}
167. Kh1 {+0.00/1 0.0 30300086 23/957/20} Rh2+ {+0.00/82 970.8 8132729286} 168. Kg1 {+0.00/1 0.0 258520478 78/844/78} Re2 {+0.00/92 1185.5 10241502107}
169. Re7 {+0.00/7 886.7 77586494 39/929/32} Rg2+ {+0.00/99 8.9 71243579} 170. Kh1 {+0.00/1 0.0 17421246 24/956/20} Rh2+ {+0.00/99 0.1 127846}
171. Kg1 {+0.03/1 0.0 1294782 220/587/193} Rg2+ {+0.00/99 0.2 21362} 172. Kh1 {+0.02/1 0.0 20482 15/985/0} Rh2+ {+0.00/99 0.1 22218}
173. Kg1 {+0.02/1 0.0 4793 19/979/2} Rg2+ {+0.00/99 0.1 106390} 1/2-1/2
[/pgn]
"Good decisions come from experience, and experience comes from bad decisions."
__________________________________________________________________
Ted Summers
BrendanJNorman
Posts: 2526
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Full name: Brendan J Norman

Re: Dragon by Komodo Chess

Post by BrendanJNorman »

Madeleine Birchfield wrote: Mon Nov 16, 2020 9:33 am
BrendanJNorman wrote: Mon Nov 16, 2020 9:02 am Another point in addition to this is that black having a more open game (Scandi is very good for this) allows him to trade pieces more readily, bringing the knight up ending closer and closer.
Couldn't white avoid all that by pushing his pawn to e5 on move 2, yielding a French Defence/Advanced Caro-Kann type positions?
That's a smart idea, but not the same.

The difference is that you are already a piece down and wasting another tempo playing 2.e5.

So black can play 2...c5 before you've had a chance to play d4 and thus your advanced French structure isn't really happening.

Image

If you play 3.Nf3 then black gets 3...Bg4 when not only has be prevented your advanced French pawn chain but also has his "bad" bishop on its ideal square outside of the black pawn chain...this essentially means ZERO winning chances for white...Even without a piece down black is better in such positions.

Basically white is prevented from ever playing a favorable d4 advance, so it is hardly going to be a French OR Caro position, just a bad position.

Against a human GM, even Komodo would lose badly this semi-closed position, with an inferior position AND a piece down as white.
Madeleine Birchfield
Posts: 512
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Location: Dublin, Ireland
Full name: Madeleine Birchfield

Re: Dragon by Komodo Chess

Post by Madeleine Birchfield »

BrendanJNorman wrote: Mon Nov 16, 2020 12:14 pm If you play 3.Nf3 then black gets 3...Bg4 when not only has be prevented your advanced French pawn chain but also has his "bad" bishop on its ideal square outside of the black pawn chain...this essentially means ZERO winning chances for white...Even without a piece down black is better in such positions.
I was taking a look at 3.c3 but that actually transposes into the Sicilian Alapan and I missed that black could play 3...d4 in response (I was taking a look at the 3...Bf5 4.d4 line which does lead to Caro/French structures).
lkaufman
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Re: Dragon by Komodo Chess

Post by lkaufman »

JJJ wrote: Mon Nov 16, 2020 10:48 am
lkaufman wrote: Mon Nov 16, 2020 8:11 am
JJJ wrote: Mon Nov 16, 2020 1:18 am
lkaufman wrote: Sun Nov 15, 2020 9:55 pm
JJJ wrote: Sun Nov 15, 2020 7:37 pm I would like to see penguin against Komodo at Bullet. It would be great !
What would you think would be a fair match? Knight odds at 1' + 1" perhaps?
I think it would be nice. I think So already player at Knight handicap against Stockfish some years ago at 1 min and lost badly :

Of course no human has much chance against Dragon with knight odds at one minute without increment, the one second inc makes all the difference. Also I note that in the three games of SF vs So, Wesley never played the obviously correct reply 1...d5! to 1e4 when the b1 knight is missing, he probably didn't even look at knight odds before the games. In fact 1.e4 is just a bad move for White unless Black is forbidden to reply 1...d5. That's a big problem with knight odds. I suspect that many of Morphy's opponents either played with the restriction of answering 1e4 with 1...e5 or else did so on grounds of sportsmanship. We would either have to alternate knights and just avoid 1e4 when b1 is off, or add the 1e4 e5 restriction.
Maybe you want to test Dragon Komodo before to have an idea how strong it ll play at bullet. In anycase, Penguin would love to challenge it. Also, you might consider many others handicap, even a 3 pawn handicap at bullet or maybe blitz to see how it does. Hikaru plays himself many handicap game against lower opponent, this time it would be the opposite.
Could you give me some specifics about handicap games Hikaru has played against lower rated human opponents, such as what handicaps, what time controls, and what chess.com ratings the opponents had? I'm especially interested in games he played this way against titled players. I don't expect complete details, just a summary of whatever you know.
Komodo rules!
ProfessorShadoko
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Full name: Jean-Philippe Karr

Re: Dragon by Komodo Chess

Post by ProfessorShadoko »

lkaufman wrote: Tue Nov 10, 2020 11:01 pm
Alayan wrote: Tue Nov 10, 2020 8:42 pm May the people rejoice while originality fades away.
lkaufman wrote: Tue Nov 10, 2020 7:42 pm When both engines were set to use MultiPV=4 for standard chess, Dragon MCTS was able to defeat SF12 decisively in a 3600 games blitz match, so we believe that on most computers it is the world's strongest engine when looking at four or more lines of play at once.
This marketing claim "forgets" to acknowledge that this increased strength of the first move is achieved by reducing how deep the engines looks at lines beyond the first one. Indeed, the ability to report multiple PVs with eval, and dedicating similar resources to explore each of the lines, are separate concepts.

Play with MultiPV=4 only reflects the quality of the first move, not that of the 2nd, 3rd or 4th, and is a fundamentally flawed way to evaluate how useful a MultiPV implementation is.

The increased quality of the first move in Komodo (and Leela) MCTS comes at the cost of a lowered quality and reliability for the moves, PV and evals of the 2nd and further lines come from smaller search trees. Turning MultiPV on in these engines doesn't increase the likelihood that they discover an initially disliked move is much better than first thought.

Most people that do use MultiPV for analysis expressed strong opposition to this trade-off when reducing 2nd and further PV lines was considered for Stockfish, though in some circumstances (moves that are much worse than the main move) it can be useful.

For deep analysis, multiPV isn't going to be used on positions with one clear forced move anyway, and the effective time-handicap that makes KMCTS look good at blitz matter much less while the search/eval deficit remain, making Stockfish the best MultiPV engine for e.g. correspondence chess.
It is true that with Komodo MCTS (or Lc0 and other MCTS engines) the second, third, and later lines are analyzed less than the first line. However it's based on how close they are to each other. In positions where several moves appear to be nearly equally good, the analysis of the later moves will be nearly as good as the analysis of the best move. In positions where there are say two plausible moves and the rest are obvious blunders, then the two plausible moves will be analyzed properly and the others will get short analysis. This is how it should work in my opinion. Spending equal time on obvious blunders is obviously not a sensible use of resources. Occasionally it will pay off, but that's not the usual case.

This is an interesting discussion, and perhaps for many users (including myself), a more important one than to determine which engine is the strongest one. It would be worth spending efforts to find out which engine is the best analysis tool.

Using (for example) MultiPV=3, this would mean being able to evaluate the strength of the 3 displayed moves. I have no idea about what would be the best way to do this, though. Maybe, from the positions after each of the 3 moves, play many games at a fast time control between high-level engines ?
Further, such tests might also be used to assess how accurate the engine's evaluation is ('accurate' meaning that it would conform to a given relationship between the evaluation score and the win probability). Which is also interesting for people using these engines as analysis tools.
JJJ
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Re: Dragon by Komodo Chess

Post by JJJ »

lkaufman wrote: Mon Nov 16, 2020 4:57 pm
JJJ wrote: Mon Nov 16, 2020 10:48 am
lkaufman wrote: Mon Nov 16, 2020 8:11 am
JJJ wrote: Mon Nov 16, 2020 1:18 am
lkaufman wrote: Sun Nov 15, 2020 9:55 pm
JJJ wrote: Sun Nov 15, 2020 7:37 pm I would like to see penguin against Komodo at Bullet. It would be great !
What would you think would be a fair match? Knight odds at 1' + 1" perhaps?
I think it would be nice. I think So already player at Knight handicap against Stockfish some years ago at 1 min and lost badly :

Of course no human has much chance against Dragon with knight odds at one minute without increment, the one second inc makes all the difference. Also I note that in the three games of SF vs So, Wesley never played the obviously correct reply 1...d5! to 1e4 when the b1 knight is missing, he probably didn't even look at knight odds before the games. In fact 1.e4 is just a bad move for White unless Black is forbidden to reply 1...d5. That's a big problem with knight odds. I suspect that many of Morphy's opponents either played with the restriction of answering 1e4 with 1...e5 or else did so on grounds of sportsmanship. We would either have to alternate knights and just avoid 1e4 when b1 is off, or add the 1e4 e5 restriction.
Maybe you want to test Dragon Komodo before to have an idea how strong it ll play at bullet. In anycase, Penguin would love to challenge it. Also, you might consider many others handicap, even a 3 pawn handicap at bullet or maybe blitz to see how it does. Hikaru plays himself many handicap game against lower opponent, this time it would be the opposite.
Could you give me some specifics about handicap games Hikaru has played against lower rated human opponents, such as what handicaps, what time controls, and what chess.com ratings the opponents had? I'm especially interested in games he played this way against titled players. I don't expect complete details, just a summary of whatever you know.
He played too many different handicap games and mostly against opponent with a very low rating compared to him. But he wins sometimes against higher players with strange odds like in this game : starting the video at : 8:02.

Also he wons against 2479 players here with different odds, but on time :

It is not the same handicap you like to propose, but perhaps it would help you calculate your odds of winnings. You can write "Hikaru odds game" on youtube and find more exemple if you like.